Sony SPP-SS964 Service Manual page 38

Pin No. Pin Name
54 RXQN
55 NC
56 IBIAS
57 AGND
58 POWERDOWN
59 AFC (BEEP)
60 AGC
61 MT-CLK
62 PARKP
63 VDDC
64 VSSP
65 SYNDATA
66 SYNTH5MCLK
67 LCD REG-SET
68 LINE-LED
69 MT-INT
70 MT-DATA
71 SYNCLK
72 SYNSTB
73 VDDP
74 VSSP
75 SYNEN
76 NVDI
77 NVDO
78 LCD-R/W
79 TXEN
80 TXPWR1
81 RINGIN
82 TXRXSEL
83 VCHG-MON
84 BASEP
85 TXPWR0
86 SPKEN
CHG-HIGH
87
RATE
88 DIALMODE
89
NEW-CALL LED
90 VDDC
91 VSSC
92 SP-MUT
93 MT-FSK-EN
94 BRANCH-DET
95 DIALMUT
96 RESETI
I/O
I
Receive data (Q negative) input from the RF unit
—
Not used (open)
I
Analog bias input terminal
—
Analog ground terminal
I Battery voltage detection input terminal "L": power down
O
Beep tone signal output terminal
O
Auto gain control signal output to the RF unit
O
Not used (open)
I Charge detection input terminal "L": charge on
—
Power supply terminal (+5V) (for core)
—
Ground terminal (for pad)
O
Synthesizer data output to the RF unit
O Synthesizer reference oscillator output to the RF unit (9.62 MHz)
Register selection signal output for the liquid crystal display
O
"L": instruction register, "H": data register Not used (open)
O
LED drive signal output of the LINE LED (D1002) "L": LED on
I
Caller-ID interrupt input terminal "L" active Not used (open)
I
Caller-ID data input terminal Not used (open)
O Synthesizer clock signal output to the RF unit
O
Synthesizer strobe signal output to the RF unit
—
Power supply terminal (+5V) (for pad)
—
Ground terminal (for pad)
O
Synthesizer power control signal output to the RF unit "H": enable
I/O
Two-way data bus with the EEPROM (IC951)
O
Clock signal output to the EEPROM (IC951)
Data read/write selection signal output for the liquid crystal display
O
"L": data write, "H": data read Not used (open)
O
TX system enable signal output to the RF unit "H": enable
O PA power selection signal output to the RF unit
I
Detection signal input of the ringer coming "L": ringer coming
O
TX/RX selection signal output to the RF unit "L": RX, "H": TX
I
Battery charge monitor input terminal
Setting terminal for the base/handset selection
I
"L": base unit, "H": handset unit (fixed at "L" in this set)
O PA power selection signal output to the RF unit
O
Enable control signal output to the voice speakerphone (IC103) "L": enable, "H": CD
Quick/normal charge selection signal output terminal
O
"L": normal charge, "H": quick charge
I
Dial mode switch (SW951) input terminal "L": pulse, "H": tone
O
New arrival call ID LED drive signal output terminal "L": LED on Not used (open)
— Power supply terminal (+5V) (for core)
—
Ground terminal (for core)
O
Speaker muting on/off control signal output to the power amplifier (IC104) "H": muting
O
Caller-ID frequency shift keying enable signal output terminal Not used (open)
I Reserve cancellation detect signal input terminal "H": cancel status
O
Reception muting during dial transmission "H": during dial transmission
System reset signal input from the reset signal generator (IC602) "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
Function
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