Sony SPP-SS964 Service Manual page 37

• BASE MAIN BOARD IC751 C7311-11 (ASIC)
Pin No. Pin Name
1 KEY-OUT5
2 D0
3, 4 D1, D2
5 D3
6 to 9 D4 to D7
KEY-IN0 to
10 to 15
KEY-IN5
16 VSSC
17 VDDC
18 VDDP
19 VSSC
INTC & HOLD
20
CTRL
RING MODE
21
ON/OFF
22 KEY-OUT3
23
KEY-OUT4
24 CDCDATAI
25 CDCDATAO
26 CDCMCLK
27 RESETO
28 CDCICLK
29 VDDP
30 VSSP
31 KEY-OUT2
32 CDCFRAME
33 ARTI
34 ARTO
KEY-OUT1,
35, 36
KEY-OUT0
37 OFFHOOK
38 VDDP
39 LCDCS
40 VDDC
41 VSSC
42 TEST
43 LNAATN
44 RXEN
45 VDDA
46 VSSA
47 VDDA
48 VSSA
49 TXDATA
50 VRP
51 RXIP
52 RXIN
53 RXQP
I/O
O Key output terminal Not used (open)
I
Selection input of the model (fixed at "L" in this set)
O
Not used (open)
I
Not used (open)
O Not used (open)
I
Key return signal input from the key matrix "L" input when key pressing
—
Ground terminal (for core)
—
Power supply terminal (+5V) (for core)
—
Power supply terminal (+5V) (for pad)
— Ground terminal (for core)
Intercom and hold control signal output terminal
O
"H": intercom and hold status, Others: "L"
I
RINGER switch (SW952) input terminal "L": ringer off, "H": ringer on
O Key send signal output to the key matrix
O
Key output terminal Not used (open)
I
Transmit data input from the CODEC (IC701)
O
Receive data output to the CODEC (IC701)
O
Master clock signal output to the CODEC (IC701)
O
Reset signal output to the CODEC (IC701) "L": reset
O
Interface clock signal output to the CODEC (IC701)
— Power supply terminal (+5V) (for pad)
—
Ground terminal (for pad)
O
Key send signal output to the key matrix
O
Frame output to the CODEC (IC701)
I ART input terminal Not used (fixed at "H")
O
ART output to the handset unit
O
Key send signal output to the key matrix
O
Hook on/off control signal output terminal "L": on hook, "H": off hook
—
Power supply terminal (+5V) (for pad)
O Chip select signal output for the liquid crystal display Not used (open)
—
Power supply terminal (+5V) (for core)
—
Ground terminal (for core)
I
Setting terminal for the test mode "L": test mode Normally: fixed at "H"
O LNA gain selection signal output to the RF unit "H": low gain
O
RX system enable signal output to the RF unit "H": enable
—
Power supply terminal (+5V) (for analog)
—
Ground terminal (for analog)
—
Power supply terminal (+5V) (for analog)
—
Ground terminal (for analog)
O
Transmit data output to the RF unit
O Analog reference voltage output terminal
I
Receive data (I positive) input from the RF unit
I
Receive data (I negative) input from the RF unit
I
Receive data (Q positive) input from the RF unit
Function
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