Related Manuals for Texas Instruments TRF6901
Summary of Contents for Texas Instruments TRF6901
- Page 1 TRF6901 with MSP430 Evaluation Kit - EU User’s Guide April 2002 Mixed-Signal RF Products SWRU006A...
- Page 2 EVM IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety measures typically found in the end product incorporating the goods.
- Page 3 EVM schematic located in the EVM User’s Guide. When placing measurement probes near these devices during operation, please be aware that these devices may be very warm to the touch. Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright 2002, Texas Instruments Incorporated...
- Page 5 Using this document, the user will understand the features of the TRF6901 RF EVM as well as the features of the TRF6901 serial port module as it relates to the TRF6901 RF EVM. Also, the user will become familiar with the features and functionality of both the TRF6901 EVM and the TRF6901 serial port tools software packages.
- Page 6 EVM development and applications support for the RF integrated semiconductor product. The EVM is a tool for evaluating the RF semiconductors supplied by Texas Instruments. The EVM is supplied to prospective component customers to provide services and software allowing the prospect customers to evaluate the RF semiconductors in products they would build.
-
Page 7: Table Of Contents
....... . TRF6901 RF EVM Setup With Control Software ....... . - Page 8 ..........TRF6901 RF Tool Kit System Mode Overview .
- Page 9 Contents 7.6.1 European ISM Band Frequency Error Calculations Form ....7-14 7.6.2 European ISM Band Frequency Calculations Form Overview ... . . 7-15 7.6.3 Frequency Error Calculation Operation...
- Page 10 ........2-12 2−7 TRF6901 RF EVM Jumper Locations and Default Configurations of the EVM ..2-13 3−1...
-
Page 11: Trf6901 Rf Tool Kit Overview
Chapter 1 TRF6901 RF Tool Kit Overview This chapter provides an overview of the TRF6901 RF tool kit. Topic Page Description ........... -
Page 12: Trf6901 Evm/Parallel Port Configuration
Description 1.1 Description The TRF6901 RF tool kit is to be used to evaluate the functionality and system performance of Texas Instrument’s TRF6901 ISM-band transceiver. It is intended to be an evaluation tool and is not to be considered a reference design. - Page 13 TRF6901 EVM/Serial Port Module Configuration Figure 1−2. TRF6901 EVM/Serial Port Module Configuration To PC Serial Port TRF6901 RF Tool Kit Overview...
-
Page 15: Trf6901 Rf Evm Pcb Hardware
Chapter 2 TRF6901 RF EVM PCB Hardware This chapter describes the PCB hardware of the TRF6901 RF EVM. Topic Page Hardware Overview ......... . . -
Page 16: Trf6901 Block Diagram
The TRF6901 RF evaluation module (EVM) provides a platform for lab prototype evaluation of the Texas Instruments TRF6901 transceiver IC. The EVM is used to evaluate the RF performance of the TRF6901. It contains a PC parallel port interface. The transmitted signal can be viewed on a spectrum analyzer as either a single output frequency or in FSK mode. -
Page 17: Trf6901 Rf Evm Schematics
TRF6901 RF EVM Schematics 2.3 TRF6901 RF EVM Schematics Figure 2−2 shows the TRF6901 RF EVM schematics. Figure 2−2. TRF6901 RF EVM Schematics (1 of 4) BPF1 SFECV10.7MA2S−A BW=330kHz 82pF 4.7 µH 15pF 82pF 120pF 68pF 50 OHM 2.7pF LPF_OUT... -
Page 18: Trf6901 Rf Evm Schematics
TRF6901 RF EVM Schematics Figure 2−2. TRF6901 RF EVM Schematics (3 of 4) 103309−5 VCCM 0.1uF LED1 ENABLE LN1261C−(TR) MCU_CLK MCU_CLK VCC2 RSSI FMMT2222ATA RSSI 0.1uF RSSI CLOCK CLOCK CLOCK 0.1uF DATA DATA DATA STROBE STROBE STROBE 2 1A1 4 1A2... -
Page 19: Top-Side Silkscreen And Drawing Of Trf6901
TRF6901 RF EVM Schematics 2.4 Top- and Bottom-Side Silkscreen and Drawing Figure 2−3 shows the top-side silkscreen of the TRF6901 RF EVM and Figure 2−4 shows the bottom-side silkscreen. Figure 2−3. Top-Side Silkscreen and Drawing of TRF6901 Figure 2−4. Bottom-Side Silkscreen of TRF6901 RF EVM... -
Page 20: Parts List
Parts List... - Page 21 Parts List TRF6901 RF EVM PCB Hardware...
- Page 22 Parts List...
- Page 23 Parts List TRF6901 RF EVM PCB Hardware...
- Page 24 Parts List 2-10...
-
Page 25: Trf6901 Evm Dc Voltage Setup
2.6 TRF6901 RF EVM Regulated Supply Configuration The evaluation board should be used with a dc power supply voltage of 6 V to 8 V nominal. Figure 2−5 details the dc voltage supply setup for the TRF6901 RF-only EVM. There are three powering sources on the TRF6901 and the EVM. The adjustable output VCC1 powers all the blocks of the TRF6901 IC. -
Page 26: Trf6901 Rf Evm Parallel Port Interface
TRF6901 Parallel Port Module Interface 2.7 TRF6901 Parallel Port Module Interface Figure 2−6 details the parallel port interface portion of the TRF6901 RF EVM. Figure 2−6. TRF6901 RF EVM Parallel Port Interface 103309−5 VCCM 0.1uF LED1 ENABLE LN1261C−(TR) MCU_CLK MCU_CLK... -
Page 27: Trf6901 Rf Evm Jumpers
2.8 TRF6901 RF EVM Jumpers 2.8.1 Jumper Connections Figure 2−7 shows the default position of the jumpers on the TRF6901 RF EVM. Figure 2−7. TRF6901 RF EVM Jumper Locations and Default Configurations of the EVM (Sheet 1 of 2) BPF1 SFECV10.7MA2S−A... - Page 28 TRF6901 RF EVM Jumpers Figure 2−7. TRF6901 RF EVM Jumper Locations and Default Configurations of the EVM (Sheet 2 of 2) POWER REG101NA−A 6.0V_TO_8.0V 1.8 −3.6V (3.0V TYP) VCC1 1.8k 10000pF 10uF 10uF 0.1uF SMBJ8.5CA 0.1uF LED3 TP18 VCC1 LN1261C−(TR) REG101NA−3.3...
-
Page 29: Default Jumper Connections
Denotes Default Connection 2.8.3 Jumper Description The jumpers on the TRF6901 RF-only EVM, as shown in Figure 2−7, are used for the following purposes. This jumper selects one source that is either VCO_VCC2 or DC_DC_OUT for the VCO. When JP1−3 is connected to JP1−2, VCO_VCC2 is fed to the VCO. -
Page 30: Connectors
PC. This port also connects to the serial port module that contains the MSP430F149 via a 20-pin cable. P1 can also be used to interface directly to the TRF6901, bypassing the parallel port interface circuitry on the EVM. -
Page 31: Test Points (Tp)
DATA TP7 The DATA test point is used to monitor the DATA signal from the PC parallel port (P2) i.e., the words (see Chapter 3, TRF6901 RF EVM Control Software) sent from the control software of TRF6901. This test point connects to U1−20 DATA terminal. -
Page 32: Adjustments
The RXDATA test point is used to monitor the received data from U1−33 RX_DATA. This test point is used during the receiver testing (see Chapter 3, TRF6901 RF EVM Control Software). 2.11 Adjustments Resistor R43 is varied to adjust the VCC1 voltage applied to U1 (TRF6901). 2-18... -
Page 33: Led Indicators
If JP6 is installed, the VCC LED is illuminated when voltage is applied to ENABLE LED1 The ENABLE LED is illuminated when the STDBY line from computer is in a high state. The STDBY line is in a high state when the TRF6901 is commanded to STDBY. BRNOUT LED2 Indicates whether the brownout detector is activated. - Page 34 2-20...
-
Page 35: Main Program Screen
Chapter 3 TRF6901 RF EVM Control Software This chapter describes the installation and use of the TRF6901 RF EVM control software. The features and functionality of this tool are described. Topic Page TRF6901 RF EVM Control Software Overview .... -
Page 36: Trf6901 Rf Evm Control Software Overview
FSK test. This software is an effective tool for evaluating the TRF6901. The user can connect measuring and testing equipment to the TRF6901 EVM and use this software to observe different parameters and features of the TRF6901. -
Page 37: How To Use The Trf6901 Control Software
3) Connect a DB25 female to DB25 male cable between the TRF6901 evaluation board and the PC parallel port. The DB25 female end of the cable is connected to the TRF6901. The DB25 male end of the cable is connected to the desired LPT port of the PC (LPT1 or LPT2). -
Page 38: Synthesizer
Divider Set Note: When words are displayed in RED, it indicates that you need to send the change to the TRF6901. Pressing the Word A, B, C, D, or the Send All Words Button sends the update to the TRF6901. - Page 39 PLL. This field cannot be edited. Crystal Frequency {Crystal Freq.} The default crystal installed on the TRF6901 RF EVM board is 20 MHz, hence the default value for this field is 20 MHz. It can be varied from 10 MHz to 20 MHz. For example, if the user removes the 20-MHz crystal and instead installs a 15-MHz crystal on the TRF6901 RF EVM, then the frequency entered in this field should be 15 MHz.
-
Page 40: Mode Options
This button checks the entry and makes sure that it is within constraints. This does not Send Words, since the changed bits still remain highlighted even after pressing this button. 3.5.2 Mode Options This section allows you to control the TRF6901. The following is a brief summary of the 11 controls:... - Page 41 Allows the resonant frequency of the external demodulation tank to be tuned. Default is 000. Reset Signal for the PFD {Reset PFD} Selects the reset signal to be derived from the XTAL (crystal) or derived from the feedback divider (/N). TRF6901 RF EVM Control Software...
-
Page 42: Operating Modes
0, can type in the desired parameter to set the TRF6901 to transmit a signal and then change the mode to 1 and enter the parameters to set the TRF6901 to receive a signal. Another way of using... -
Page 43: Help Box
Most of the other control boxes follow this format. The first line indicates what portion of the TRF6901 is controlled. The next two lines indicate the bit value. The last line indicates that the control works in mode 0 and 1. -
Page 44: Trf6901 Ic Layout Screen
IC Layout Screen 3.6 IC Layout Screen Figure 3−2 shows the IC layout screen of the TRF6901 control software. Double clicking the Help window on the main program screen with the left mouse button, displays the IC layout screen. The IC layout screen is a replica of the main program screen of the program that gives the user a convenient environment to control the TRF6901 IC. - Page 45 LEARN/HOLD Mode Button This button toggles the data-slicer in the TRF6901 IC between LEARN and HOLD mode and performs the same function as the LEARN/HOLD field on the main program screen.
-
Page 46: Options
Options The Options Sections consists of the following: Mode 0/1 By clicking on this button, the user can toggle the mode of the TRF6901. This field is similar to the MODE field on the main program screen. TXDATA 0/1 This button toggles the TX_DATA terminal of the TRF6901. -
Page 47: Fsk/Ook Test
Testing the Transmitter Send Words This button is similar to Send All Words (F7) button on the main program screen and it sends out A, B, C, and D words to the TRF6901 through the parallel port. Close This button closes the IC layout form and returns to the main program screen. -
Page 48: Equipment Setup For Testing Of The Trf6901 Evm Transmitter
Board 3.7.2 Step 2: Software Programming For testing the TRF6901 transmitter section in the FSK mode, set the main program screen and the IC layout screen as shown in Figure 3−4 and Figure 3−5. Figure 3−4. Main Programming Screen Setup for Testing the Transmitter... -
Page 49: Ic Layout Screen Setup For Testing The Transmitter
After setup is complete, press the Send Words button on the IC layout screen or the Send All Words (F7) button on the main program screen to send the programming words to the TRF6901. TRF6901 RF EVM Control Software 3-15... -
Page 50: Carrier Signal On The Spectrum Analyzer
Testing the Transmitter 3.7.3 Step 3: Spectrum Analyzer Setup Set up the spectrum analyzer to observe the following figure. Figure 3−6. Carrier Signal on the Spectrum Analyzer Output Power is Less Due to Loss in Cable 3-16... -
Page 51: Fsk Output From Transmitter
3.7.4 Step 4: FSK Modulation Output Test The FSK deviation for the TRF6901 is set externally by C24 to approximately ±50 kHz. To run an FSK test: 1) Click the Send Words button from the main program screen or the IC layout screen. -
Page 52: Equipment Setup For Fsk Test With An External Modulation
32 kbps), set the reference divider to 100 or less (corresponding to a reference frequency of 200 kHz or higher). It is necessary that the PLL loop filter bandwidth be greater than the data modulation rate. For the TRF6901 EVM, the PLL loop filter bandwidth is designed to be approximately 20 kHz, which is greater than the required 16 kHz. -
Page 53: Fsk Output From Transmitter With An External Modulation
Testing the Transmitter Figure 3−9. FSK Output From Transmitter With an External Modulation TRF6901 RF EVM Control Software 3-19... -
Page 54: Test Setup For Trf6901 Evm Receiver Testing
Oscilloscope 3.8.1 Test Equipment Setup Connect the TRF6901 RF EVM as shown in Figure 3−10. Set the channel of digital or analog oscilloscope to 20 µs Time/Division and 1 V/Division. Set the external signal generator according to the following: Center frequency 868 MHz ±50 kHz... -
Page 55: Main Program Screen Setup For Receiver Testing
(F7) Button Must Be Pressed to Update the Changes Note: The signal received by the TRF6901 has a frequency of 868 MHz. The TRF6901 is using a 10.7-MHz IF frequency. Therefore, the local oscillator (LO) is set to a frequency of 878.7 MHz. -
Page 56: Ic Layout Screen For The Receiver Testing
In practical applications, the data slicer is in LEARN mode until a valid training sequence (see TRF6901 RF Tool Kit System Mode) from the receiver is recognized. The data slicer is then switched to the HOLD mode. It is switched back to the LEARN mode as soon as the transmission of the data packet is complete. -
Page 57: Rxdata Signal At −50-Dbm Input Signal To The Receiver
The data plots in Figure 3−13 and Figure 3−14, show the measured receive data at the RXDATA test points for input signals at –50 dBm and –90 dBm, respectively. Figure 3−13. RXDATA Signal at −50-dBm Input Signal to the Receiver TRF6901 RF EVM Control Software 3-23... -
Page 58: Rxdata Signal At −90-Dbm Input Signal To The Receiver
Testing of the Receiver Figure 3−14. RXDATA Signal at −90-dBm Input Signal to the Receiver 3-24... -
Page 59: Trf6901 Serial Port Tool Overview
Chapter 4 TRF6901 Serial Port Tool Overview This chapter provides an overview of the TRF6901 serial port module supporting the TRF6901 RF EVM. Topic Page Purpose ............ -
Page 60: Purpose
TRF6901 RF EVM. This connector receives power from the TRF6901 RF EVM as well as provides communication and control signal lines to the TRF6901 RF EVM. The serial port connector on the right of the board interfaces the MSP430 to a standard PC COM port. -
Page 61: Trf6901 Serial Port Module Pcb Hardware
Chapter 5 TRF6901 Serial Port Module PCB Hardware This chapter describes the PCB hardware of the TRF6901 serial port module. The PC serial interface, MSP430 micro controller, TRF6901 RF EVM interface SV1, control interface J12, JTAG interface J13, miscellaneous MSP430 port terminals, and the LED status indicators are discussed. -
Page 62: Hardware Overview
This allows the user to evaluate the performance of the TRF6901 on the TRF6901 RF EVM, or if the user is in possession of two RF tool kits, it permits the user to observe a real-time frequency shift keying (FSK) RF link operation with the TRF6901 RF EVM. -
Page 63: Trf6901 Serial Port Module Schematic
Hardware Overview Figure 5−1. TRF6901 Serial Port Module Schematic TRF6901 Serial Port Module PCB Hardware... -
Page 64: Trf6901 Serial Port Module Top Level Layout
Hardware Overview Figure 5−2. TRF6901 Serial Port Module Top Level Layout... -
Page 65: Pc Serial Port Interface
9-terminal serial port cable connector. From the connector, signal levels are adjusted via two 6N130 opto-isolators to eliminate noise from coupling from the PC to the TRF6901, as well as prevent damage to the MSP430 hardware UART. -
Page 66: Sv1 Terminal Connections
TRF6901 SV1 Interface 5.4 TRF6901 SV1 Interface The TRF6901 serial port module SV1 interface is the direct connection to the TRF6901 RF EVM. See Figure 5−3 for terminal connections. Figure 5−3. SV1 Terminal Connections ACTIVE/STDBY Digital output from the MSP430 for controlling the state of the TRF6901. -
Page 67: Control Signal Interface J12
RSSI signal. 5.8 LED Status Indicators On the TRF6901 serial port tool module, there are eight LED status indicators. Four indicators reflect the control signals applied to the TRF6901 RF EVM, and one indicates when a programming sequence is actively being sent to program the TRF6901. -
Page 68: Trf6901 Serial Port Module Led Indicators
LED Status Indicators Figure 5−4. TRF6901 Serial Port Module LED Indicators... -
Page 69: Trf6901 Rf Tool Kit
Topic Page TRF6901 RF Tool Kit System Mode Overview ....System Mode Description ........ -
Page 70: Setup Of Two Trf6901 Rf Tool Kits In The System Mode
In this mode, the MSP430F149 populated on the TRF6901 serial port module is driving the TRF6901 on the RF EVM. With two TRF6901 RF tool kits a simple RF link can be established. This is shown in Figure 6−1. -
Page 71: Trf6901 Rf Tool Kit System Mode Overview
TRF6901 RF Tool Kit System Mode Overview Note: TX _DATA = 0 Frequency is set from the mode 0 VCO register settings. TX_DATA = 1 Frequency is adjusted by external components on the TRF6901 RF EVM. The corner frequency is determined as the center between the two frequencies. -
Page 72: System Mode Description
6.2.3 System Mode Protocol Basics In order to establish the RF link, two TRF6901 RF tool kits are required. In addition, at least one tool kit must be connected to a PC via the serial port. On the PC, the TRF6901 serial port tools software, must be installed. The system mode tool in this software package enables the user together with two TRF6901 tool kits to establish the RF link. -
Page 73: Phases Of The Communication Flow
This checksum is then added to the RS232 received data package. After switching the TRF6901 to transmit mode, the data is immediately sent off via RF. Another TRF6901 RF tool kit can receive this RF transmitted signal. If this tool kit is connected to another PC terminal program, it displays the received package on the terminal window screen before sending an acknowledgement back to the original sending tool kit. -
Page 74: Tx-Data Rf Transmission Sequence Control
System Mode Description 6.2.5 System Mode Transmission Protocol Details The RF transmission protocol is shown in Figure 6−3. Figure 6−3. TX-Data RF Transmission Sequence Control Training sequence High Pulse width corresponds 31.25 us with 31.916kBit/s Length of the training sequence... - Page 75 TRF6901 RF Tool Kit System Mode...
- Page 76 Chapter 7 TRF6901 Serial Port Tools Software This chapter describes the installation and use of the TRF6901 serial port tools software. The features and functionality of both the programming tool and system mode tool are described. Topic Page TRF6901 Serial Port Tools Software Overview .
-
Page 77: Trf6901 Serial Port Tools Software Overview
TRF6901 ISM transceiver registers and control signal states. The second, the system mode tool, allows the user to operate the TRF6901 RF tool kit in an RF link operation. For both window environments, communication with the software is implemented from the PC via the RS232 interface to the MSP430 on the TRF6901 serial port module. -
Page 78: Trf6901 Serial Port Tools Software
TRF6901 Serial Port Tools Software Main Form Figure 7−1. TRF6901 Serial Port Tools Software 7.3.1 Tool Bar Options Options Programming Tool: Displays the TRF6901 programming tool System Mode Tool: Displays the TRF6901 system mode tool Exit: Closes all TRF6901 serial port tools windows... -
Page 79: Trf6901 Serial Port Tools Software
TRF6901 Serial Port Tools Software Main Form Help About: Displays information regarding the tool software revision... -
Page 80: Programming Tool Binary Input Form
Save: Permits the users to save a current configuration Load: Permits the users to load a specific configuration Exit: Closes all TRF6901 serial port tools windows and exits the software Options Visual: Displays visual block diagram of TRF6901. Changes in the binary input form are reflected on this block diagram. -
Page 81: Programming Tool Block Diagram Use
Save: Permits the users to save a current configuration Load: Permits the users to load a specific configuration Exit: Closes all TRF6901 serial port tools windows and exits the software Options Binary: Displays TRF6901 binary input form. Changes in the binary input form are reflected on this block diagram. -
Page 82: Programming Tool Block Diagram (Standby Mode 0 − Transmit)
COM Port Select COM 1: Selects PC COM Port 1 if available and attempts to communicate with the TRF6901 serial port tool module. Select COM 2: Selects PC COM Port 2 if available and attempts to communicate with the TRF6901 serial port tool module. -
Page 83: Programming Tool Block Diagram (Standby Mode 1 − Receive)
TRF6901 Programming Tool Figure 7−4. Programming Tool Block Diagram (Standby Mode 1 − Receive) -
Page 84: Programming Tool Block Diagram (Active Mode Transmit)
TRF6901 Programming Tool 7.4.2.3 ACTIVE Mode 0 Transmit Figure 7−5. Programming Tool Block DIagram (Active Mode Transmit) TRF6901 Serial Port Tools Software... -
Page 85: Programming Tool Block Diagram (Active Mode Receive)
TRF6901 Programming Tool 7.4.2.4 ACTIVE Mode 1 Receive Figure 7−6. Programming Tool Block DIagram (Active Mode Receive) 7.4.2.5 Control Signals in 3-State When the programming tool configures any of the control signals as a high-impedance input, the visual input window indicates that a possible state change may arise from an external hardware stimulus to interface J12. -
Page 86: Trf6901 System Mode Tool
When the TXDATA control signal is Z, the TXDATA indicator in the Visual window toggles between TXDATA high and TXDATA low. However, this does not cause the control signal line to the TRF6901 to toggle. It is only to indicate that the port controlling the TXDATA signal is now configured as a high-impedance input. -
Page 87: System Mode Tool-Version
Figure 7−7. System Mode Tool—Version 2.01 7.5.2.1 Tool Bar Options File Exit: Closes all TRF6901 serial port tools windows and exits the software COM Port Select COM 1: Selects PC COM port 1 if available and attempts to communicate with the TRF6901 serial port tool module. -
Page 88: System Mode Operation
7.5.4 System Mode Operation In the Figure 7−8 the text TRF6901 System Mode Transmit was typed into the window. This data can be sent either by pressing Enter on the keyboard, or by clicking on the Send button. -
Page 89: System Mode Tool-Example Operation
TRF6901 System Mode Tool Figure 7−8. System Mode Tool—Example Operation There are two history windows, one for transmitted data, and one for received data. All sent data and received data packages are stored in these windows. As the implemented RF link supports acknowledge of the transmitted data packages, information regarding whether the transmitted data package has been received or not is visible. -
Page 90: European Ism Band Frequency Error Calculations Form
TRF6901 European Frequency Plan Tool 7.6 TRF6901 European Frequency Plan Tool The TRF6901 European frequency plan tool is provided as an additional option for customers wanting to perform development within the European ISM band. To gain access to this tool, within the programming tool binary input form, type EU into the reference frequency text edit box. -
Page 91: European Ism Band Frequency Calculations Form Overview
TRF6901 European Frequency Plan Tool 7.6.1.1 Tool Bar Options File Exit: Closes all TRF6901 serial frequency tools windows and exits the software. Options Frequency Error Calculation: Selection of this option starts the frequency error calculation based on data entered into the form. -
Page 92: Reprogramming Of The Msp430F149
The user may export these settings back to the programming tool form by selecting Options−>Export Setting to PRG Tool. Once the data is updated in the programming tool, the settings may be applied to the TRF6901 hardware for verification. 7.7 Reprogramming of the MSP430F149 There are various options to reprogram the MSP430F149, populated on the baseband board. - Page 93 TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions:...