Würth TARVOS-II User Manual
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Würth TARVOS-II User Manual

Würth TARVOS-II User Manual

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U
SER MANUAL
T
-II
ARVOS
AMB8626 / 2607021181000
V
4.4
ERSION
M
19, 2023
AY

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Summary of Contents for Würth TARVOS-II

  • Page 1 SER MANUAL ARVOS AMB8626 / 2607021181000 ERSION 19, 2023...
  • Page 2 *************** MUST READ Check for firmware updates Before using the product make sure you use the most recent firmware version, data sheet and user manual. This is especially important for Wireless Connectivity products that were not purchased directly from Würth Elektronik eiSos. A firmware update on these respective products may be required.
  • Page 3 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Revision history Manual Notes Date version version version 1.0 - 2.0 - June 2017 • Initial version 3.11 3.4.0 • New corporate design and 3.4.0 November 2018 structure • Added information on new firmware in chapter...
  • Page 4 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II • Removed 2607021181001 and 2607021181009 from as there are no longer pre-cuts or non T&R 3.5.0 May 2023 packages available. The modules are available in all quantities as cut tape. • New corporate design.
  • Page 5 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Abbreviations Abbreviation Name Description Acknowledgement pattern confirming the reception of Acknowledgement the transmitted data packet. Checksum Transmission time in relation of one hour. 1% means, Duty cycle channel is occupied for 36 seconds per hour.
  • Page 6 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Hexadecimal All numbers beginning with 0x are stated as [HEX] hexadecimal numbers. All other numbers are 0xhh decimal. Order code 2607021181000 Version 4.4, May 2023 www.we-online.com/wcs...
  • Page 7 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Contents Overview of helpful application notes 1. Introduction 1.1. Operational description ....... 12 1.2.
  • Page 8 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 7.3.5. CMD_REPEAT_IND ......33 7.4. Requesting parameters and actions ......35 7.4.1.
  • Page 9 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.9. MAC_NumRetrys ........56 8.9.1.
  • Page 10 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.24.3. UART_Baudrate: Configure the UART speed ....78 8.24.4. Example 1: ........78 8.24.5.
  • Page 11 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 14.2. Update via ACC Software and UART ......104 15. Firmware history 16.
  • Page 12 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 23. Important notes 23.1. General customer responsibility ......131 23.2.
  • Page 13 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Overview of helpful application notes Application note ANR008 - Wireless Connectivity Software Development Kit http://www.we-online.com/ANR008 To ease the integration of the Würth Elektronik eiSos radio modules into an application, Würth Elektronik eiSos offers the corresponding Software Development Kit (SDK) for most commonly used host processors.
  • Page 14 1. Introduction 1.1. Operational description The Tarvos-II is a radio sub module for wireless communication between devices such as control systems, remote controls, sensors etc. It offers several radio configurations, address modes and relieves the host system of radio-specific tasks such as •...
  • Page 15 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 1.3. Ordering information WE order code Former order code Description Proprietary radio module 868MHz with antenna 2607021181000 AMB8626-TR pad, Tape & Reel 2607029281001 AMB8626-EV Evaluation kit for AMB8626 modules USB dongle with AMB8626 module, SMA...
  • Page 16 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 2. Electrical specifications As not otherwise stated measured on the evaluation board Tarvos-II-EV with T = 25°C, VCC = 3.3 V and 50 conducted. 2.1. Recommended operating conditions Description Min. Typ. Max. Unit Ambient temperature °C...
  • Page 17 2.3.1. Static The stated current consumption is the sum of the CPU current and the radio current, depending on the active radio mode. Conditions: Tarvos-II-EV with T = 25 °C, VCC = 3.3 V, terminated unused module pads and conducted. Description Typ.
  • Page 18 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Property Typ. Unit GPIO maximum current per pin GPIO maximum current over all Internal pull-up resistor Internal Pull-down resistor Table 6: Pin characteristics 2.6. Integrated flash characteristics The integrated flash memory has only a limited number cycles. This number of flash cycles has a guaranteed min.
  • Page 19 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 3. Pinout RESERVED TX_IND UTXD RX_IND URXD /RTS /RESET RESERVED /CTS RESERVED /DATA_IND RESERVED RESERVED RESERVED /CONFIG TRX_DIS /DATA_REQ RESERVED RESERVED Figure 2: Pinout Designation Description Antenna connection, 50 Supply Ground Supply Supply voltage...
  • Page 20 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II UART clear to send. HIGH signal indicates host busy. Disabled by default. /CTS Input If the pin function is disabled, connect it to GND. Packet receive indication. Goes LOW as soon as a...
  • Page 21 If the module has to be connected to a PC, an adapter (TTL to RS-232 or TTL to USB) has to be used. The Tarvos-II-EV is suited for this. In the default configuration all module inputs (TRX_DISABLE and /CONFIG) are activated and must be connected as shown in table .
  • Page 22 You just used the so called "transparent mode" of the modules to send your data. The address mode that was used is "0". Thus all radio frames are broadcasts that can be received by anyone listening with an Tarvos-II in default settings. The frame you sent was generated using the timeout method.
  • Page 23 In factory state the default address mode is "0", which means that all radio frames are broad- casts that can be received by anyone listening with an Tarvos-II in default settings. Transmitter To send the string "Hello World", the corresponding has to be inserted into the input line of hterm.
  • Page 24 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II The sending module answers with a to confirm that the request has been re- ceived. Receiver In factory state, the second module receiving this packet outputs a message which format is as follows:...
  • Page 25 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 5. Functional description 5.1. Operating modes The Tarvos-II can be used in the following operating modes: 1. Transparent mode (transparent data transmission) 2. Command mode (module configuration and data transmission using the predefined com- mand interface) The operating mode after power-up can be configured by means of the...
  • Page 26 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Recommendation: Automatic switching to a specific mode can be realized by applying falling edges on the /CONFIG pin as long as the needed is returned: • 0x02 0x44 0x01 0x10 0x57 telegram indicating command mode •...
  • Page 27 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 5.1.5. Command mode This operating mode primarily serves module configuration. The module acts as a slave and can be fully controlled by an external host using the commands of the command interface (see...
  • Page 28 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 6. Host connection 6.1. Serial interface: UART The configuration in factory state of the UART is 9600 Baud with data format of 8 data bits, no parity and 1 stop bit ("8n1"). The baud rate of the UART can be configured by means of the UserSetting .
  • Page 29 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 7. The command interface 7.1. Overview In the command mode, communication with the module occurs in form of predefined com- mands. These commands must be sent in telegrams according to the format described in table .
  • Page 30 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 7.2. Message overview Start Message name Short description signal Requests 0x02 0x00 Send data to configured address 0x02 0x01 Send data to specific address Resend the transmission of the data 0x02 0x02 submitted earlier...
  • Page 31 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 0x02 0x4D RSSI request received 0x02 0x4E Internal error states have been returned 0x02 0x51 RF TX power has been changed 0x02 0x52 Factory reset request received Indications 0x02 0x80 Data has been repeated...
  • Page 32 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 7.3. Data transfer & reception in the command mode This group of commands includes the commands that are used to either request a radio tele- gram to be sent or indicates a received frame.
  • Page 33 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 7.3.2. CMD_DATAEX_REQ This command serves data transfer in a network with several parties. Both the channel to use and the destination address (depending on the parameterized addressing mode) are specified along with the command. The number of payload data bytes is limited to 128.
  • Page 34 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Start Payload length Destination Command Channel Payload signal address 0x47 0x6F 0x6F 0x02 0x01 0x09 0x6A 0x05 0x64 0x62 0x79 0x38 0x65 Response: Start CMD_DATA_REQ | 0x40 Length Status signal 0x40 0x01 0x00...
  • Page 35 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Start Command Payload length + 1 RSSI Payload signal 0x48 0x65 0x6C 0x6C 0x6F 0x02 0x81 0x0D 0x20 0x57 0x6F 0x72 0x6C 0xD9 0x56 0x64 0x21 message informs us that we received a packet with payload of 0x0D (13) bytes.
  • Page 36 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Start Command Length Status Addressing mode signal 0x80 0x02 1 Byte 0x00 1 Byte 0x02 Format in addressing mode 1: Start Addressing Destination Source Command Length Status signal mode address address 0x02 0x80...
  • Page 37 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 7.4. Requesting parameters and actions This group includes all commands that will return read-only parameters or request actions in the module. 7.4.1. CMD_FWRELEASE_REQ This command is used to request the firmware version of the module.
  • Page 38 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Start Command Length signal 0x0B 0x00 0x09 0x02 Response Start Command | 0x40 Length Serial number signal 0x4B 0x04 4 Bytes 1 Byte 0x02 For the serial number, the most significant byte (MSB), which identifies the product (product ID), is returned first.
  • Page 39 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Start Command | 0x40 Length RX level signal 0x4D 0x01 1 Byte 1 Byte 0x02 The delivered RSSI delivery is in two’s complement. The relation between the calculated value and the physical RX level in dBm is not linear across the entire operating range but can be estimated as linear in the range from -110 to -30 dBm.
  • Page 40 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Start Command | 0x40 Length Error flags signal 0x4E 0x02 1 Byte 0x02 2 Bytes The value of "0" returned by the error flag implies that no error has occurred. The value is reset either after a query or by a reset.
  • Page 41 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 7.5. Modification of volatile parameters This group contains all functions that will modify runtime settings while the module is running. These settings are all volatile and will be reset to defaults on a reset of the module.
  • Page 42 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 7.5.3. CMD_SET_PAPOWER_REQ This command is used to set the RF TX-power. Unlike the user settings parameter , this is a volatile runtime parameter, but it is handled in the same way. Thus see section for more information.
  • Page 43 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Start Command Length Channel signal 0x06 0x01 1 Byte 1 Byte 0x02 Response Start Command | 0x40 Length Channel signal 0x46 0x01 1 Byte 1 Byte 0x02 7.5.4.1. Example 1: Set the channel to 108.
  • Page 44 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Start Command | 0x40 Length Status signal 0x47 0x01 1 Byte 1 Byte 0x02 Status: 0x00: success 7.5.6. CMD_SET_DESTADDR_REQ This command serves to configure the destination address in addressing modes 1 and 2. Un- like the user settings parameter , this is a volatile runtime parameter.
  • Page 45 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 7.6. Modification of non-volatile parameters The non-volatile parameters are also called user settings and are stored in a special flash location. 7.6.1. CMD_SET_REQ This command enables direct manipulation of the parameters in the module’s non-volatile user settings.
  • Page 46 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Start Memory Command Length + 2 Length Parameter signal position 0x09 1 Byte 1 Byte Length 1 Byte 0x02 1 Byte Response Start Command | 0x40 Length Status signal 0x49 0x01 1 Byte...
  • Page 47 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Start Command | 0x40 Length Status signal 0x49 0x01 0x00 0x4A 0x02 Request successfully received and processed 7.6.2. CMD_GET_REQ This command can be used to query individual or multiple user settings parameters. The re- quested number of bytes from the specified memory position are returned.
  • Page 48 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Start Command Memory Length + 2 Length Parameter signal | 0x40 position 0x06 0x04 0x00 0xC2 0x01 0x00 0xDB 0x02 0x4A 0x50 Read out the as 0x00 0x01 0xC2 0x00 (115200) Baud. 7.6.3. CMD_FACTORY_RESET_REQ This command restores the default user settings of the module.
  • Page 49 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8. UserSettings - Module configuration values 8.1. Difference between volatile and non-volatile settings The so-called UserSettings are stored permanently into the internal flash of the module. At start-up, these UserSettings are loaded as start values into the volatile settings ("RuntimeSet- tings").

  • Page 50: Table Of Contents

    WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II End-of-text character used to mark data packets, reception 0 - 255 of this character triggers wireless transmission Timeout after the last character before the data received via UART are 2 - 65535 transmitted via wireless...
  • Page 51 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Flags to set the repeater 0 - 65535 options Number of (time) slots for 0 - 255 packet repetition 1200 - Symbol rate of the UART 9600 115200 Number of data bits 7, 8...
  • Page 52 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Start signal Command Length + 2 Memory Position Length Parameter 0x02 0x09 0x03 0x05 0x01 0x00 0x0C Response: Start signal Command | 0x40 Length Status 0x02 0x49 0x01 0x00 0x4A Request successfully received and processed 8.3.2.
  • Page 53 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.4. UART_PktSize Permissible Default Memory Designation Summary Length values value position Number of characters for transmission start with set 1 - 128 packet size Maximum number of bytes after which the wireless transmission of the data received via UART starts.
  • Page 54 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.5. UART_RTSLimit Permissible Default Memory Designation Summary Length values value position Number of received characters after which 1 - 128 /RTS responds Number of bytes after which the host system is prompted to interrupt the data transfer over /RTS.

  • Page 55: End-Of-Text Character Used To

    WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.6. UART_ETXChar Permissible Default Memory Designation Summary Length values value position End-of-text character used to mark data packets, reception 0 - 255 of this character triggers wireless transmission End-of-text character that triggers the transmission of the data received via UART. Only used in packet mode 1 and in = transparent.
  • Page 56 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.7. UART_Timeout Permissible Default Memory Designation Summary Length values value position Timeout for radio send data trigger (after the last received 2 - 65535 UART character) [ms] The timeout defines the delay in milliseconds in transparent mode after the last character has been received by the UART before the wireless transmission starts.

  • Page 57: Delay Between Signal By Pin /Data_Indication And 0 - 65535 14

    WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.8. UART_DIDelay Permissible Default Memory Designation Summary Length values value position Delay between signal by pin /DATA_INDICATION and 0 - 65535 beginning of UART transmission to host [ms] This parameter determines the delay in milliseconds between the indication of incoming RF data by the /DATA_INDICATION pin and the output of the data on UART.

  • Page 58: Number Of Wireless Retries

    WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.9. MAC_NumRetrys Permissible Default Memory Designation Summary Length values value position Number of wireless 0 - 255 retries Determines the maximum number of wireless transmission retries. If this parameter is set to a value other than 0, the receiver module will automatically be prompted to send a wireless ac- knowledgement ("ACK").

  • Page 59: Addressing Mode To Be Used

    WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.10. MAC_AddrMode Permissible Default Memory Designation Summary Length values value position Addressing mode to 0 - 2 Addressing mode selection. The following modes have been implemented: • No addressing (mode 0): Each module receives the transmitted RF telegram and delivers the received data to the host system via UART.
  • Page 60 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Start signal Command | 0x40 Length Status 0x02 0x49 0x01 0x00 0x4A Request successfully received and processed 8.10.2. Example 2: Read the from memory position 21 and length 1. Command: Start signal Command...

  • Page 61: Number Of Wireless Retries For The Cca 0 - 255 5 22

    WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.11. MAC_NumRetrysCCA Permissible Default Memory Designation Summary Length values value position Number of wireless 0 - 255 retries for the CCA Determines the maximum number of retries, the module is checking for a clear channel before wireless transmission (CCA).

  • Page 62: Delay For The Retry Of The Cca

    WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.12. MAC_CCARetryDelay Permissible Default Memory Designation Summary Length values value position Delay for the retry of the 5 - 255 Determines the delay the module waits for wireless transmission after a busy channel was detected.

  • Page 63: Default Destination Network Id

    WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.13. MAC_DefaultDestNetID Permissible Default Memory Designation Summary Length values value position Default destination 0 - 255 network ID Destination network address which is used in addressing mode 2. Can be modified with the command at runtime (volatile).

  • Page 64: Default Destination Address

    WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.14. MAC_DefaultDestAddrLSB Permissible Default Memory Designation Summary Length values value position Default destination 0 - 255 address (LSB) Least significant byte of the destination address which is used in addressing modes 1 and 2.

  • Page 65: Own/Local Network Id

    WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.15. MAC_DefaultSourceNetID Permissible Default Memory Designation Summary Length values value position Own/Local network 0 - 254 Source network ID to be used in addressing mode 2. 8.15.1. Example 1: Set the parameter to 1.

  • Page 66: Own/Local Address

    WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.16. MAC_DefaultSourceAddrLSB Permissible Default Memory Designation Summary Length values value position Own/Local 0 - 254 address (LSB) Source device address to be used in addressing modes 1 and 2. 8.16.1. Example 1: Set the parameter to 1.

  • Page 67: Waiting Time For Wireless

    WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.17. MAC_ACKTimeout Permissible Default Memory Designation Summary Length values value position Waiting time for wireless 5 - 65535 acknowledgement [ms] Time to wait for a RF acknowledgement before a RF retry is triggered.
  • Page 68 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Start signal Command | 0x40 Length + 2 Memory Position Length Parameter 0x02 0x4A 0x04 0x20 0x02 0x0A 0x00 0x64 Successfully read the value of as 10 ms. Order code 2607021181000 Version 4.4, May 2023...

  • Page 69: Output Power [Dbm], Value

    WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.18. PHY_PAPower Permissible Default Memory Designation Summary Length values value position Output power [dBm], value range depends on RF -11 - 15 configuration complement on Parameter for the RF output power of the module. The maximum permissible output depends on the used RF configurations.
  • Page 70 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Start signal Command Length Memory Position Amount of Bytes 0x02 0x0A 0x02 0x29 0x01 0x22 Response: Start signal Command | 0x40 Length + 2 Memory Position Length Parameter 0x02 0x4A 0x03 0x29 0x01...

  • Page 71: Utilized Wireless Channel After Reset, Value Range

    WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.19. PHY_DefaultChannel Permissible Default Memory Designation Summary Length values value position Utilized wireless channel after reset, 100 - 140 value range depends on RF configuration Determines the wireless channel of the module to be used after a reset.

  • Page 72: Threshold Used For Cca

    WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.20. PHY_CCAThr Permissible Default Memory Designation Summary Length values value position Threshold used for CCA 0 - 102 22 22 complement on two CCA threshold This parameter sets the threshold at which a signal is considered as such. The user must adopt all relevant CCA values to the system design and environment.

  • Page 73: Operating Mode

    WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.21. OpMode Permissible Default Memory Designation Summary Length values value position Operating mode 0, 16 Choose between operating modes. Can be selected between mode 0 (transparent data trans- fer) and mode 16 (command mode).
  • Page 74 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.22. CfgFlags Permissible Default Memory Designation Summary Length values value position Flags for setting various 0 - 65535 properties see chapter 16-bit field in which the use of individual pins or signals can be disabled. Table represents a description of the respective flags.
  • Page 75 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Warning: If both bit 0 and bit 2 are set, the module can no longer be set to the command mode. This parameter set consisting of two bytes has to be transferred LSB first. That means, first the byte with bits 0 ...
  • Page 76 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.23. RpFlags Permissible Default Memory Designation Summary Length values value position Flags to set the 0 - 65535 repeater options Repeater configuration flags (hex.) 16-bit field contains the settings of the repeater functionality. Table represents a description of the respective flags.
  • Page 77 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.23.2. Example 2: Read the RpFlags from memory position 74 and length 2. Command: Start signal Command Length Memory Position Amount of Bytes 0x02 0x0A 0x02 0x4A 0x02 0x42 Response: Start signal Command | 0x40...
  • Page 78 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.24. RP_NumSlots Permissible Default Memory Designation Summary Length values value position Number of (time) slots 0 - 255 for packet repetition An 8 bit field that contains the number of time slots to be used for the packet repetition.
  • Page 79 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.24.1. Example 1: Set the to 64. Command: Start signal Command Length + 2 Memory Position Length Parameter 0x02 0x09 0x03 0x4C 0x01 0x40 0x05 Response: Start signal Command | 0x40 Length Status...
  • Page 80 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.24.3. UART_Baudrate: Configure the UART speed Permissible Default Memory Designation Summary Length values value position 1200 - Symbol rate of the UART 9600 115200 A 32 bit field, that contains the symbol rate for the communication interface (in LSB first no- tation).
  • Page 81 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Start Command | Memory Parameter Length + 2 Length signal 0x40 position 0x00 0xC2 0x01 0x00 0x02 0x4A 0x06 0x50 0x04 0xD9 Successfully read the value of as 115200 Baud. Order code 2607021181000 Version 4.4, May 2023...
  • Page 82 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.25. UART_Databits Permissible Default Memory Designation Summary Length values value position Number of data bits 7, 8 An 8 bit field that contains the number of data bits on the communication interface. Supported values are 7 and 8.
  • Page 83 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.26. UART_Parity Permissible Default Memory Designation Summary Length values value position Parity 0, 1, 2 Parity mode value ’n’ no parity ’e’ even parity ’o’ odd parity An 8 bit field that contains the parity mode for the communication interface.
  • Page 84 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Start signal Command | 0x40 Length + 2 Memory Position Length Parameter 0x02 0x4A 0x03 0x55 0x01 0x00 0x1F Successfully read the value of as 0 (’n’ no parity). Order code 2607021181000 Version 4.4, May 2023...
  • Page 85 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.27. UART_Stoppbits Permissible Default Memory Designation Summary Length values value position Stop bits 1, 2 An 8 bit field that contains the number of stop bits for the communication interface. Supported are 1 and 2 stop bits.
  • Page 86 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.28. RF_ConfigIndex Permissible Default Memory Designation Summary Length values value position Configuration index An 8 bit field that addresses the applied RF configuration. = 1 is a low datarate but high sensitivity configuration (=higher range due to higher link budget).
  • Page 87 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.28.2. Example 2: Read the from memory position 92 and length 1. Command: Startsignal Command Length MemoryPosition Amount of Bytes 0x02 0x0A 0x02 0x5C 0x01 0x57 Response: Startsignal Command |0x40 Length + 2...
  • Page 88 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.29. RF_CCADisabled Due to backwards compatibility this CCA method is not suited for being used as Polite Spectrum Access (PSA) as introduced by Norms of the European Radio Equipment Directive (RED). If you need PSA in your system a customer specific firmware is required.
  • Page 89 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Start signal Command | 0x40 Length + 2 Memory Position Length Parameter 0x02 0x4A 0x03 0x5D 0x01 0x00 0x17 Successfully read the value of as 0 (which means CCA is enabled). Order code 2607021181000 Version 4.4, May 2023...
  • Page 90 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 8.30. RF_CCACheckTime Permissible Default Memory Designation Summary Length values value position Observation time [ms] 0 - 60000 A 16 bit field that contains the time in milliseconds for which the channel with activated CCA has to be observed and identified as free before channel access can take place.
  • Page 91 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 9. Timing parameters 9.1. Reset behavior Following a reset, a stable (>5ms) LOW on the /RTS pin signals that the module is ready for operation. This level is however only valid, after the delay required for the internal initialization of the processor (a few µs).
  • Page 92 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 9.3. Latencies during data transfer / packet generation The data transfer is always buffered, i.e. data received via UART is buffered in the module until a specific event occurs. Subsequently, the UART reception is interrupted (flow control with /RTS signal), and the payload data is passed to the internal memory of the wireless transceiver (FIFO).
  • Page 93 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 10. Radio parameters The RF parameters are configured with the as well as with Furthermore, the volatile runtime parameters can be configured over the respective command during runtime. This leads to the adoption of these parameters with the next packet transmit or receive.
  • Page 94 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Figure 4: Spectrum of two signals with 38.4 kBaud data rate and 20 kHz deviation with a fre- quency separation of 50 kHz. Figure 5: Spectrum of two signals with 38.4 kBaud data rate and 20 kHz deviation with a fre- quency separation of 100 kHz.
  • Page 95 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II are displayed in Figure and Figure . Caution, the figures display only a part of the necessary considerations for the bandwidth and are only meant for demonstration. Figure 6: Violation of limit at the band edge of a 38.4 kBaud data rate and 20 kHz deviation signal on channel 101.
  • Page 96 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Figure 7: Compliance of limit at the band edge of a 38.4 kBaud data rate and 20 kHz deviation signal on channel 102. The default configuration consists of a data rate of 38.4 kcps ( = 0), a frequency of 868.3 MHz (...
  • Page 97 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Frequency Profile Profile Profile Sub band Channel Required channel 100 kHz spacing 868.00 Band M 868.05 868 MHz - 868.6 MHz 868.10 14 dBm 868.15 868.20 The whole band except for 868.25 audio& video applications 868.30...
  • Page 98 The EN 300 220 allows a specific tx duration when the standard complying PSA method is implemented in the module firmware. The standard Tarvos-II firmware does not implement PSA. With PSA a transmission time of 100 s/h (3.6%) is possible.
  • Page 99 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 11. Using the repeater functionality The Tarvos-II module can be run as a repeater to artificially extend the range of sending devices in an existing network. Figure 8: Range extension using repeaters If the module is configured as repeater it can be simply added to existing wireless networks consisting of compatible modules.
  • Page 100 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II A module that is configured as repeater simultaniously supports also the func- tions of a standard module. Thus, it can receive data and can initiate the data transmission to other modules. 11.1. Setup of the network and repeater device...
  • Page 101 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II • The "packet sniffer" mode cannot run at the same time as the module is in repeater mode. Thus the bit 7 in the is ignored. • Each time a packet has been repeated a is printed over UART.
  • Page 102 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Figure 9: Example network 11.3. Application in parallel networks As described above, a repeater device forwards all packets that are received before. If a network needs to have a bigger throughput of data, a parallel network can be set up, that relaxes the stress of the primal network.
  • Page 103 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 12. Battery powered operation The TRX_DISABLE pin can set the module to one of two different modes of operation. 12.1. Active mode When TRX_DISABLE is low, the module is permanently ready to receive and forward data via UART or wireless transmission.
  • Page 104 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 13. Custom firmware 13.1. Custom configuration of standard firmware The configuration of the standard firmware includes adoption of the non-volatile Usersettings (see chapter ) to customer requirements and creating a customized product based on the standard product.
  • Page 105 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II The qualification(s) and certification(s) of the standard firmware cannot be ap- plied to this customer firmware solution without a review and verification. 13.4. Contact for firmware requests Please contact your local field sales engineer (FSE) or WCS@we-online.com for quotes re- garding these topics.
  • Page 106 Ensure your levels are in the range of the electrical specification as shown in chapter Users must make sure that their host is not accessing the Tarvos-II RX line (i.e. pulling it HIGH or LOW) as that will prevent ACC to access the module.
  • Page 107 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II As long as our standard firmware is running on the module, it can be updated with the PC utility "ACC" via the serial interface. If the module is not directly connected to a PC, then at least the UART should be made accessible, e.g.
  • Page 108 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 15. Firmware history Version 2.0 "Production" • First product release. The version number is related to the AMB8426 because of the compatibility of the radio Version 2.3 "Production" • Addition and optimization of 100kcps for RF transmission Version 2.4 "Production"...
  • Page 109 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 16. Design in guide 16.1. Advice for schematic and layout For users with less RF experience it is advisable to closely copy the relating evaluation board with respect to schematic and layout, as it is a proven design. The layout should be conducted with particular care, because even small deficiencies could affect the radio performance and...
  • Page 110 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II • Elements for ESD protection should be placed on all pins that are accessible from the outside and should be placed close to the accessible area. For example, the RF-pin is accessible when using an external antenna and should be protected.
  • Page 111 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II • Filter and blocking capacitors should be placed directly in the tracks without stubs, to achieve the best effect. • Antenna matching elements should be placed close to the antenna / connector, blocking capacitors close to the module.
  • Page 112 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Figure 12: Dimensioning the antenna feed line as micro strip lead to a trace width of W ~ 1.9 mm. To ease the calculation of the micro strip line (or e.g. a coplanar) many calculators can be found in the internet.
  • Page 113 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 16.3.1. Wire antenna An effective antenna is a /4 radiator with a suiting ground plane. The simplest realization is a piece of wire. It’s length is depending on the used radio frequency, so for example 8.6 cm 868.0 MHz and 3.1 cm for 2.440 GHz as frequency.
  • Page 114 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 16.3.4. Antennas provided by Würth Elektronik eiSos 16.3.4.1. 2600130081 - Hyperion-I - 868 MHz dipole antenna Figure 13: 868 MHz dipole-antenna Ideally suited for applications where no ground plane is available. The 2600130081 antenna can be also used for 902MHz - 928MHz range.
  • Page 115 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 16.3.4.2. 2600130082 - Hyperion-II - 868 MHz magnetic base antenna Well suited for applications where the RF is lead through a metal wall that could serve as ground plane to the antenna. Figure 14: 868 MHz magnet foot antenna with 1.5 m antenna cable The 2600130082 is a kind of /4 radiator and therefore needs a ground plane at the feeding point.
  • Page 116 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 17. Reference design Tarvos-II was tested and certified on the corresponding Tarvos-II evaluation board. For the compliance with the EU directive 2014/53/EU Annex I, the evaluation board serves as refer- ence design. This is no discrepancy due to the fact that the evaluation board itself does not fall within the scope of the EU directive 2014/53/EU Annex I as the module is tested on the evaluation board, which is also the recommended use.
  • Page 117 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 17.1. Schematic Order code 2607021181000 Version 4.4, May 2023 www.we-online.com/wcs...
  • Page 118 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Order code 2607021181000 Version 4.4, May 2023 www.we-online.com/wcs...
  • Page 119 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 17.2. Layout Figure 15: Assembly diagram Figure 16: Top and Bottom Layer Order code 2607021181000 Version 4.4, May 2023 www.we-online.com/wcs...
  • Page 120 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 18. Manufacturing information 18.1. Moisture sensitivity level This wireless connectivity product is categorized as JEDEC Moisture Sensitivity Level 3 (MSL3), which requires special handling. More information regarding the MSL requirements can be found in the IPC/JEDEC J-STD-020 standard on www.jedec.org.
  • Page 121 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Volume mm Volume mm Volume mm Package thickness <350 350-2000 >2000 < 1.6 mm 260 °C 260 °C 260 °C 1.6 mm - 2.5 mm 260 °C 250 °C 245 °C > 2.5 mm 250 °C...
  • Page 122 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II After reflow soldering, visually inspect the board to confirm proper alignment 18.2.2. Cleaning Do not clean the product. Any residue cannot be easily removed by washing. Use a "no clean" soldering paste and do not clean the board after soldering.
  • Page 123 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 18.3. ESD handling This product is highly sensitive to electrostatic discharge (ESD). As such, always use proper ESD precautions when handling. Make sure to handle the part properly throughout all stages of production, including on the host PCB where the module is installed. For ESD ratings, refer to the module series’...
  • Page 124 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II Würth Elektronik eiSos radio modules with high output power of up to 500 mW, as for example the radio module Thebe-II, generate a high amount of warmth while transmitting. The manufacturer of the end device must take care of po- tentially necessary actions for his application.
  • Page 125 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 19. Physical specifications 19.1. Dimensions Dimensions 17 x 27 x 3.8 mm Table 20: Dimensions 19.2. Weight Weight Table 21: Weight Order code 2607021181000 Version 4.4, May 2023 www.we-online.com/wcs...
  • Page 126 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 19.3. Module drawing 24,0 22,0 27,0 ±0,4 Figure 18: Module dimensions [mm] Order code 2607021181000 Version 4.4, May 2023 www.we-online.com/wcs...
  • Page 127 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 19.4. Footprint 22,0 24,0 Figure 19: Footprint and dimensions [mm] 19.5. Antenna free area To avoid influence and mismatching of the antenna the recommended free area around the antenna should be maintained. As rule of thumb a minimum distance of metal parts to the antenna of /10 should be kept (see figure...
  • Page 128 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 20. Marking 20.1. Lot number The 15 digit lot number is printed in numerical digits as well as in form of a machine readable bar code. It is divided into 5 blocks as shown in the following picture and can be translated according to the following table.
  • Page 129 The 3 byte counter printed on the label can be used with this 0018DA to produce the full MAC address by appending the counter after the manufacturer identifier. Figure 21: Label of the Tarvos-II Order code 2607021181000 Version 4.4, May 2023...
  • Page 130 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 21. Information for explosion protection In case the end product should be used in explosion protection areas the following information can be used: • The module itself is unfused. • The maximum output power of the module is 14 dBm.
  • Page 131 RED directive 2014/53/EU of the European Union (EU). The Tarvos-II can be operated without notification and free of charge in the area of the Euro- pean Union. However, according to the RED directive, restrictions (e.g. in terms of duty cycle or maximum allowed RF power) may apply.
  • Page 132 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 22.4. EU Declaration of conformity EU DECLARATION OF CONFORMITY Radio equipment: 2607021181000 & 2607056281001 The manufacturer: Würth Elektronik eiSos GmbH & Co. KG Max-Eyth-Straße 1 74638 Waldenburg This declaration of conformity is issued under the sole responsibility of the manufacturer.
  • Page 133 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 23. Important notes The following conditions apply to all goods within the wireless connectivity product range of Würth Elektronik eiSos GmbH & Co. KG: 23.1. General customer responsibility Some goods within the product range of Würth Elektronik eiSos GmbH & Co. KG contain statements regarding general suitability for certain application areas.
  • Page 134 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 23.5. Product improvements Due to constant product improvement, product specifications may change from time to time. As a standard reporting procedure of the Product Change Notification (PCN) according to the JEDEC-Standard, we inform about major changes. In case of further queries regarding the PCN, the field sales engineer, the internal sales person or the technical support team in charge...
  • Page 135 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 24. Legal notice 24.1. Exclusion of liability Würth Elektronik eiSos GmbH & Co. KG considers the information in this document to be cor- rect at the time of publication. However, Würth Elektronik eiSos GmbH & Co. KG reserves the right to modify the information such as technical specifications or functions of its products or...
  • Page 136 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II where a higher safety standard and reliability standard is especially required or where a failure of the product is reasonably expected to cause severe personal injury or death, unless the par- ties have executed an agreement specifically governing such use. Moreover, Würth Elektronik eiSos GmbH &...
  • Page 137 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 25. License terms These License terms will take effect upon the purchase and usage of the Würth Elektronik eiSos GmbH & Co. KG wireless connectivity products. You hereby agree that these license terms are applicable to the product and the incorporated software, firmware and source codes (collectively, "Software") made available by Würth Elektronik eiSos in any form, including but...
  • Page 138 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II shall inform Würth Elektronik eiSos about the intent of such usage before design-in stage. In certain customer applications requiring a very high level of safety and in which the malfunction or failure of an electronic component could endanger human life or health, you must ensure to have all necessary expertise in the safety and regulatory ramifications of your applications.
  • Page 139 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 25.6. Limitation of liability Any liability not expressly provided by Würth Elektronik eiSos shall be disclaimed. You agree to hold us harmless from any third-party claims related to your usage of the Würth Elektronik eiSos’...
  • Page 140 21. Label of the Tarvos-II ........127...
  • Page 141 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II 18. Classification reflow soldering profile, Note: refer to IPC/JEDEC J-STD-020E . . 118 19. Package classification reflow temperature, PB-free assembly, Note: refer to IPC/- JEDEC J-STD-020E ........119 20.
  • Page 142 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II A. Additional CRC8 Information This Annex gives an example CRC8 implementation and test vectors. A.1. Example CRC8 Implementation #include <stdint.h> uint8_t Get_CRC8(uint8_t * bufP, uint16_t len) uint8_t crc = 0x00; for (uint16_t i = 0; i < len; i ++) crc ^= bufP[i ];...
  • Page 143 WIRELESS CONNECTIVITY & SENSORS User manual Tarvos-II B. Example codes for host integration The following code is an example implementation of a function to transmit data using a 1 Byte length field in the command frame. For demonstration reasons the Tarvos-III has been taken The full function codes of all radio modules are available in the Wireless Connectivity SDK (www.we-online.de/wco-SDK ).
  • Page 144 Contact Würth Elektronik eiSos GmbH & Co. KG Division Wireless Connectivity & Sensors Max-Eyth-Straße 1 74638 Waldenburg Germany Tel.: +49 651 99355-0 Fax.: +49 651 99355-69 www.we-online.com/wireless-connectivity...

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