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Applicant: Motorola, INC
FCC ID: IHDP56JE1
C24 Hardware Interface Manual
Version 0.3
C24
H a r d w a r e I nt e r f a c e M a n u a l
C24 CDMA 1X Module
Nov 14, 2008
Version 0.3

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   Summary of Contents for Motorola C24 CDMA 1X

  • Page 1 FCC ID: IHDP56JE1 C24 Hardware Interface Manual Version 0.3 H a r d w a r e I nt e r f a c e M a n u a l C24 CDMA 1X Module Nov 14, 2008 Version 0.3...
  • Page 2: Table Of Contents

    EGULATOR 2.10.3 ..........................33 2.10.4 ........................34 NTENNA ETECTION 2.10.5 CDMA NW D ........................35 ETECTION 2.10.6 ....................... 35 RANSMISSION NDICATOR 2.10.7 I/O ........................35 ENERAL URPOSE 2.11 ......................... 36 NTENNA NTERFACE Motorola General Business Use Page 2 of 36...
  • Page 3: Revision History

    Updating Regulatory approvals requirements 11-Nov-08 Udi Hadar Update max output power to 25dBm Update VSWR to 2.5:1 14-Nov-08 Steve Gump Update maximum allowable gain at 1900 MHz to maximum of 4.2 dBi Motorola General Business Use Page 3 of 36...
  • Page 4: Regulatory Requirement

    Motorola assumes no liability for customer failure to comply with these precautions. The C24 must be operated at the voltages described in the technical documentation •...
  • Page 5: Antenna And Transmission Safety Precautions

    Note: pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio Motorola General Business Use Page 5 of 36...
  • Page 6 - Increase the separation between the equipment and receiver. - Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. - Consult the dealer or an experienced radio/TV technician for help. Motorola General Business Use Page 6 of 36...
  • Page 7: Hardware Interface Description

    A voice or data call is in progress. RESET_N signal is high, When the call terminates, The Module CSD or Data TXEN_N signal is Low. will return to the last operating state (Idle or Sleep). Motorola General Business Use Page 7 of 36...
  • Page 8: Power Supply

    RTC mode Idle mode Registered IDLE - SCI2 - TBR = 30 minutes Legend Low power mode SLEEP • SCI2: Paging slots every 5.12 seconds • TBR: Timer Base Registration Max TX/RX current Motorola General Business Use Page 8 of 36...
  • Page 9: Power On/off Operation

    An internal pull-up resistor sets the ON_N input signal high whenever a power supply is applied to the module. Asserting the ON_N signal low for a minimum of 200 milliseconds (0.2 seconds) will cause the module to turn-on. The following figure illustrates the power-on process using the ON_N signal. Motorola General Business Use Page 9 of 36...
  • Page 10: Turning The Module Off

    There are several ways to turn the module off: Asserting the ON_N signal low for a minimum of 1.5 seconds. Setting the IGN signal low Low power automatic shut down AT command Motorola General Business Use Page 10 of 36...
  • Page 11 This delay mechanism is implemented to protect the module from unexpected tr ansients on the IGN line during power up. The following figure illustrates the power-off timings when using the IGN signal. FIGURE 7 – IGN power off timings CTS_N <5000ms RESET_N Motorola General Business Use Page 11 of 36...
  • Page 12: Low Power Mode

    ATS24 = 5 activates low power mode within 5 seconds of inactivity. ATS24 = 0 disables low power mode (default). The following image illustrates the ATS24 command operation: FIGURE 9 – ATS24 Operation Motorola General Business Use Page 12 of 36...
  • Page 13: Serial Interface During Low Power Mode

    This delay is maximum 15 milliseconds long, and is also indicated by the CTS_N signal inactive (high) state. The delay guarantees that data on the serial interface is not lost or misinterpreted. 2.4.3.1 Temporary Termination of Low Power Mode Motorola General Business Use Page 13 of 36...
  • Page 14 Only when the serial interface transfer is completed and the data is processed, The module will return to low power mode automatically, according to the ATS24 settings. FIGURE 12 – Serial Interface data Motorola General Business Use Page 14 of 36...
  • Page 15 0 disables the currently active low power mode and switches the module to Idle mode. The module will not return to low power mode until an ATS24 > 0 commands is set again. Motorola General Business Use Page 15 of 36...
  • Page 16: Real Time Clock

    When the power supply is disconnected from the module, the RTC timer will reset and the current time and date will be lost. On the next module power-up the time and date will need to be set again automatically or manually Motorola General Business Use Page 16 of 36...
  • Page 17: Serial Interfaces

    The module is defined as a DCE device, and the user application is defined as the DTE device. These definitions apply for the UART signals naming conventions, and the direction of data flow, as described in the following figure. Motorola General Business Use Page 17 of 36...
  • Page 18: Secondary Uart (uart2)

    Auto baud rate detection is not supported. Default baud rate is 115200 bps. All flow control handshakes are supported: hardware, software, or none. Parity bit and Stop bit definitions are also supported Motorola General Business Use Page 18 of 36...
  • Page 19: Usb Interface

    USB may be used for standard communications with the module, as done through the UART interfaces. When USB is active, the module’s low power mode cannot be operated. FIGURE 15 – USB interface signals VBUS VBUS Module HOST DEVICE Motorola General Business Use Page 19 of 36...
  • Page 20: Removable-user Identify Module (r-uim) Interface

    The module incorporates a standard Removable-User Identify Module (R-UIM) interface. TABLE 6 – R-UIM interface signals Signal Name Description UIM_PWR Card supply voltage UIM_RESET Card reset UIM_DATA Data I/O UIM_CLK Card clock UIM_CR_DET Card detect Motorola General Business Use Page 20 of 36...
  • Page 21: Audio Interface

    The microphone input includes all the necessary circuitry to support a direct connection to an external microphone device. It incorporates an internal bias voltage of 1.8V through a 2.2KΩ resistor, and has an impedance of 1KΩ. Motorola General Business Use Page 21 of 36...
  • Page 22: Headset Microphone Port

    TABLE 9 – Headset Microphone Port Specifications Units Parameter Conditions Input Voltage No load 1.58 Gain Programmable in 1 dB steps AC Input KΩ Impedance = 2 KΩ BIAS Bias voltage ≤ 1 mA BIAS Bias Current Motorola General Business Use Page 22 of 36...
  • Page 23: Speaker Port

    Programmable in 3 dB steps Handset mode -35.8 -14.8 Gain Headset mode -28.8 -7.8 (See table 17) AC Output Ω Impedance DC voltage 32Ω load 0.15 Isolation Speech, f > 4 KHz Motorola General Business Use Page 23 of 36...
  • Page 24: Headset Detection

    It may also be used as a single-ended output referenced to the module’s analog ground. TABLE 11 – Alert Port Specifications Units Parameter Conditions Output No load Voltage Gain Programmable in 5dB steps AC Output Ω Impedance DC voltage VCC/2 8Ω load Isolation Motorola General Business Use Page 24 of 36...
  • Page 25: Digital Audio Interface

    125 uS (8 KHz). It is recommended the serial data signals will be High-Z during the inactive period. The bus clock and sync output signals remain active all the time. FIGURE 22 – Voiceband mode PCM bus coding format PCM_FS PCM_CLK PCM_DOUT PCM_DIN Motorola General Business Use Page 25 of 36...
  • Page 26: Audio Operating Modes

    (speech, DTMF tones, rings and alerts). The following table describes the advanced mode audio programming features. These features are only a part of the complete advanced audio AT command set. Motorola General Business Use Page 26 of 36...
  • Page 27: Audio Programming Interface

    Enabling or disabling the algorithms can be configured separately for each audio path and operating mode through the AT command interface. The module supports the following speech coding algorithms: Motorola General Business Use Page 27 of 36...
  • Page 28 Sets rings and alerts Alert Speaker AT+CRSL gain. The gain levels for the input and output devices, which correspond to the values set by the AT commands, are described in the following tables. Motorola General Business Use Page 28 of 36...
  • Page 29 -13.8 -17.8 -10.7 -14.8 -7.7 316.8 TABLE 18 – Microphone and Headset-Microphone port Gains 0dBm0 Input Maximum Input AT Command Level Level Value … … … … … … … … … Motorola General Business Use Page 29 of 36...
  • Page 30: A/d Interface

    Resolution 2.9.2 Battery Temperature A/D The module incorporates a dedicated A/D port for battery thermistor measurements. This feature is implemented only in the charger model version. TABLE 21 – Temperature A/D Specifications Motorola General Business Use Page 30 of 36...
  • Page 31: General Purpose A/d

    The GPAD signals can sense a DC voltage level of 0 – 2.3 V, which is converted internally to a 10-bit digital value. TABLE 22 – GPAD Specifications Units Parameter Conditions Input Voltage Sampling 0.05 Range Resolution Motorola General Business Use Page 31 of 36...
  • Page 32: Control And Indicators Interface

    The module incorporates a regulated voltage output, VREF. The regulator provides a 2.8V output for use by the customer application. This regulator can source up to 150 mA of current to power any external digital circuits. TABLE 24 – VREF Specifications Units Parameter Conditions Motorola General Business Use Page 32 of 36...
  • Page 33: Wake-up Out

    • ATS102 - Defines the delay time in milliseconds that the module will wait, after asserting the WKUPO_N signal low, before sending data on the serial interface. This delay is required to allow the application enough time to reactivate from low power mode and switch to normal Motorola General Business Use Page 33 of 36...
  • Page 34: Antenna Detection

    A DC resistance below 100KΩ (± 5%) is defined as a valid antenna connection, and the ANT_DET output signal is set high. A DC resistance above 100KΩ (± 5%) is defined as an antenna disconnection, and the ANT_DET output is set low. Motorola General Business Use Page 34 of 36...
  • Page 35: Cdma Nw Detection

    AT command. These signals may be used to control or set external application circuits, or to receive indications from the external application. Each GPIO shall have internal pull-up resistor of 6KΩ (± 5% Motorola General Business Use Page 35 of 36...
  • Page 36: Antenna Interface

    800 MHz -106dBm Max Average Power Max Peak Power RF output 1900 MHz 25dBm 30dBm power 800 MHz 25dBm 30dBm Gain 0 dBi (unity) gain or greater Impedance 50Ω VSWR Less than 2.5:1 Motorola General Business Use Page 36 of 36...

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