Spi Bus; Keypad Interface; Figure 14: Sim Socket; Table 25 : Spi Bus Pin Description - Wavecom WMOi3 User Manual

WMOi3 Integrated Modem
1 K
GND

4.1.12 SPI bus

The SPI bus includes a CLK signal, an I/O signal and an EN signal complying with
SPI bus standard. The maximum speed transfer is 3.25Mb/s.
Signal
SPI_CLK
SPI_IO
SPI_EN
*See Table 3 "operating conditions" in subdivision
connector description

4.1.13 Keypad interface

This interface provides 10 connections : 5 rows (R0 to R4) and 5 columns (C0 to
C4).
The scanning is
modem. No discrete components like R,C (Resistor, Capacitor) are needed.
It is possible to scan the column and rows using the: AT+ CMER. command. See
AT command user's guide for more details.
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SIMVCC
SIMRST
SIMCLK
SIMDATA
SIMPRES1
Figure 14 Figure 14 : : SIM socket

Table 25 : SPI Bus pin description

Pin number
44
43
42
a digital one, and the debouncing is done in the integrated
January 2001/ version 1.4
1
VCC
2
RST
3
CLK
CC4
GND
VPP
7
I / O
8
CC8
I/O I/O type*
O 1X
I/O CMOS / 1X
O 1X
Description
SPI Serial Clock
SPI Data
SPI Enable
4.1.1The 50-pin
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