Справочник Пользователя для Sierra Wireless Q2438F

 WM_HWD_SK_UGD_002 - 002 

6/27/2003 

 

according to the CDMA Module schematic pin name.  Two of these lines are 
Analog to Digital inputs to the Module microprocessor, if required for testing.   

 

Note that for the GSM Module design, the test point names do not apply and 

the user will have to refer to the GSM schematic to determine the correct test 

point location for a given line. 

3.7.4 Keypad 

For testing purposes, an optional keypad can be installed on the Interface 

Board that will provide the customer a 5x4 matrix of keys for test and debug.  

The keypad should be a Grayhill 88JB2 and can be purchased in North 
America through Digikey with a GH5020-ND part number.  The Module itself 

can support a bigger matrix, however the keypad chosen was the largest 

standard keypad that could be found. 

 

Note that for the CDMA Module, the JTAG and Keypad share the same Module 

interface pins thus cannot be used at the same time.  Additionally, the CDMA 

Module itself requires a different hardware population to implement each path.  
The default population configuration for the CDMA module enables the 

Keypad, not the JTAG Interface. 

3.7.5 JTAG 

Included on the Interface Board for debugging purposes is a JTAG Header 

(J202).  The connector, when needed, should be soldered to the bottom side of 

the Interface Board.  This connector will not be required in a customer 

application, and is therefore not normally populated on the board. 

 

Note  that  only  the  CDMA  Module  supports  a  JTAG  interface.    The  JTAG  and 
Keypad Interfaces share the same Module interface pins thus cannot be used 

at the same time.  Additionally, the CDMA Module itself requires a different 

hardware population to implement each path.  The default population 

configuration for the CDMA module enables the Keypad, not the JTAG 

Interface. 

 

3.8 LED Function 

There are two general status indicators, LED1 and LED2, on the Interface 

Board.  The drive circuits for these are controlled directly from the Module, via 

the 60 pin board-to-board connector.  Both LEDs are located near the Power 

Jack on the Interface Board. 

 

Additional indicators are included for the Vibrator and Ringer driver circuits, 

and for the DM and DATA Interface ports.  Refer to these headings for more 

details of their function. 

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