Siemens DSB45, Manual

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DSB45 Development Support Box
Confidential / Released
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DSB45_HD_V05 Page 35 of 50 01.02.2008
5 Connecting the GSM module to DSB45
To properly connect the GSM module to the DSB45 platform use the appropriate backpack
adapter provided with DSB45. For detailed information refer to [3]. The backpack adapter
connects to the DSB45 PCB via the 50-pin plug connector X150.
Note: The pin assignment of the 50-pin board-to-board connector X150
might be different
to the pin numbering
of the GSM module.
Table 20: Pin assignment of connector X150 on DSB45
Pin no. Signal name Function
1 GND Ground
2 GND Ground
3 GND Ground
4 GND Ground
5 GND Ground
6 CHARGE Charge control
7 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”.
8 VDDLP Supply voltage for Real Time Clock (RTC)
9 TXD0 Transmit Data (0)
10 TXD1 Transmit Data (1)
11 RXD0 Receive Data (0)
12 RXD1 Receive Data (1)
13 SYNC GSM TX slot indication or programmable status LED (see [1]
and [2] for details.
14 BATT_TEMP Battery temperature
15 RFSDAI DAI Receive Frame Sync
16 TXDDAI DAI Transmit Data
17 SCLK DAI Synchronous Clock
18 TFSDAI DAI Transmit Frame Sync
19 RXDDAI DAI Receive Data
20 CCGND Chip Card Ground
21 CCIN Chip Card In
22 CCRST Chip Card Reset
23 CCIO Chip Card Data
24 CCVCC Chip Card Supply Voltage
25 CCCLK Chip Card Clock
26 EPN2 Earpiece 2 signal inverted