Specifications

Page 7

4. Electrical

4.1 50 way Hirose Pin Descriptions

The WISM module is connected to a motherboard via a 50 way Hirose DF12C board-to-board

connector. The table below defines the pin functions.

If a motherboard is being designed for interchangeable use with a Siemens GPRS module and a WISM

then some signal levels may need to meet tighter limits than specified for each individual module.

Consult the Application Note AN014 – WISM and MC55 Design Considerations.

The pin-out is as viewed from the underside of the Module.

Pin No. Direction Description Pin No. Direction Description

26 I VCC_5V 25 GND

27 I VCC_5V 24 GND

28 I VCC_5V 23 GND

29 I VCC_5V 22 GND

30 I VCC_5V 21 GND

31 O 3VOUT (monitor only) 20 Not Used

32 O /RING 19 Not Used

33 O /DSR 18 Not Used

34 I /RTS 17 I /TXD

35 I /DTR 16 Not Used

36 Not Used 15 O /RXD

37 O /CTS 14 Not Used

38 Not Used 13 Not Used

39 O /DCD 12 Not Used

40 I /RESET (configurable,

default active low)

11 Not Used

41 Not Used 10 Not Used

42 GND 9 Not Used

43 Not Used 8 Not Used

44 Not Used 7 Not Used

45 Not Used 6 Not Used

46 Not Used 5 Not Used

47 Not Used 4 O WLAN_ACTIVE

48 Not Used 3 I BT_STATE

49 Not Used 2 Not Used

50 Not Used 1 I BT_PRIORITY