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Interconnection with CPU & Local Keypad
Local Keypad
J101
Image 9-6
Interconnection with CPU & Local Keypad
Connector J101 - from Local Keypad
Pin Name
GND
AMB_LIGHT
IRQ_RC5
++5V
SDA_ERROR
SCL_ERROR
Connector J700 - Interconnection CPU/Local Keypad
Pin Name
GND
TX_RCVDS
RX_RCVDS
RDY_IN_RCVDS
TX_PC
RX_PC
R5976820 SLM R12+ PERFORMER 08/03/2005
J6
J7
J101
Pin No
In/out
Definition
1
Ground
2
In
Ambient light info from local keypad
3
In
RC5 signal from local keypad
4
Out
Power supply
5
Out
I2C SDA signal to lcd display
6
Out
I2C SCL signal to lcd display
Pin No
In/out
1-2
3
In
4
Out
5
Out
6
In
7
Out
CPU
J700
J409
J300
Communication Interface
Definition
Ground
Ambient light info from local keypad
RC5 signal from local keypad
Power supply
I2C SDA signal to lcd display
I2C SCL signal to lcd display
9. Communication Module R763768
J700
Signal
TTL
TTL
+5V
TTL
TTL
Signal
TTL
TTL
+5V
TTL
TTL
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