Siemens DSB45, Manual

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DSB45 Development Support Box
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DSB45_HD_V05 Page 32 of 50 01.02.2008
4.2 Test points on DSB45
For measurement purposes, all interface signals of the GSM module (except SIM interface)
are available on the 40-pin test point connector X153. Test points for the SIM interface are
available on the X501 connector described in Chapter 2.6.
Table 18: Test points on plug connector X153
Pin no. Signal Function
1 BATT+ Supply voltage
2 BATT+ Supply voltage
3 BATT+ Supply voltage
4 GND Ground
5 GND Ground
6 BATT_TEMP Battery temperature
7 CHARGE Charge control
8 POWER
3V3
Power supply from plug-in charger connected to X603.
Power supply switch S601 must be flipped up (battery) and
POWER switch X133 must be in “POWER” position.
Digital supply voltage, if POWER switch X133 is flipped to
position “3V3”.
9 2V9 (VDD) Supply voltage ext.
10 IGT Ignition
11 EMERGOFF Emergency-off / power-off
12 VDDLP Power voltage for Real Time Clock (RTC)
13 SYNC GSM TX slot indication or programmable status LED (see [1]
and [2] for details.
14 TXD0 Transmit Data (0)
15 RXD0 Receive Data (0)
16 RTS0 Request To Send (0)
17 CTS0 Clear To Send (0)
18 DTR0 Data Terminal Ready (0)
19 DCD0 Data Carrier Detected (0)
20 DSR0
DSPOUT
Data Set Ready (0)
DAI DSP Data Out
21 RING0
CLKSXM
Ring Indication (0)
DAI 13 MHz Clock Reference
22 TXD1 Transmit Data (1)
23 RXD1 Receive Data (1)
24 CTS1 Clear To Send (1)
25 RTS1 Request To Send (1)
26 RFSDAI DAI Receive Frame Sync