Wavecom Q2686, Technical Specifications

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WM_PRJ_Q2686_PTS_001-010 June 30, 2009
Q2686 Wireless CPU ®
3.4.2.2 I²C Bus Pin-out
Pin description
Signal Pin
number
I/O I/O type Reset
state
Description Multiplexed
with
SCL1 44 O Open drain Z Serial Clock GPIO26
SDA1 46 I/O Open drain Z Serial Data GPIO27
See Chapter 3.3, "Electrical information for digital I/O” for Open drain, 2V8 and 1V8 voltage
characteristics and Reset state definition.
3.5 Keyboard Interface
This interface provides 10 connections:
•
5 rows (ROW0 to ROW4) and
•
5 columns (COL0 to COL4).
The scanning is a digital one and debouncing is performed in the Q2686
Wireless CPU ® .
No discrete components such as Rs, Cs (Resistors, Capacitors) are needed.
Keyboard interface pin description
Signal Pin
number
I/O I/O
type
Reset
state
Description Multiplexed
with
ROW0 68 I/O 1V8 0 Row scan GPIO9
ROW1 67 I/O
1V8
0 Row scan GPIO10
ROW2 66 I/O
1V8
0 Row scan GPIO11
ROW3 65 I/O
1V8
0 Row scan GPIO12
ROW4 64 I/O
1V8
0 Row scan GPIO13
COL0 59 I/O
1V8
Pull-up Column scan GPIO4
COL1 60 I/O
1V8
Pull-up Column scan GPIO5
COL2 61 I/O
1V8
Pull-up Column scan GPIO6
COL3 62 I/O
1V8
Pull-up Column scan GPIO7
COL4 63 I/O
1V8
Pull-up Column scan GPIO8
See Chapter 3.3, “Electrical information for digital I/O” for Open drain, 2V8 and 1V8 voltage
characteristics and for Reset state definition.
With the Open AT
®
Software Suite v2 when the keyboard service is used the
whole multiplexed signals become unavailable for other purposes. In the same
way if one or more GPIOs ( of this table) are allocated the keyboard service is
unavailable.