SONY XRC8220R
Service Manual

Pin No. 69 70 71 72 73 74 75 76 77 78 79 80 81 82 to 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108

Pin Name FLASH-W IIC SIO IIC CKO RC-IN1 X1A X0A DAVN KEYACK BU-IN ILL IN TEL-ATT NOSESW ACC IN
TIR-D0 to TIR-D3

I/O I I/O O I O I I I I I I I I I/O I I I I I � I O � I O O O O O O I I I I I I I

Function Internal flash memory data write mode detection signal input terminal �L�: data write mode Not used (fixed at �H� in this set) Two-way data bus with the RDS decoder (IC150) Bus clock signal output to the RDS decoder (IC150) Rotary remote commander shift key input terminal �L�: shift Sub system clock output terminal (32.768 kHz) Sub system clock input terminal (32.768 kHz) Data transmit completed detect signal input from the RDS decoder (IC150) �H� active Input of acknowledge signal for the key entry Acknowledge signal is input to accept function and eject keys in the power off status On at input of �H� Battery detect signal input from the SONY bus interface (IC602) and battery detect circuit �L� is input at low voltage Auto dimmer control illumination line detection signal input terminal �L� is input at dimmer detection Telephone muting signal input terminal At input of �H�, the signal is attenuated by �20 dB Front panel block remove/attach detection switch (SW500) input terminal �L�: front panel is attached Accessory detect signal input terminal �L�: accessory on Two-way data bus with the MSM6688GS (IC100) Hardware standby input terminal �L�: hardware standby mode Reset signal input in this set Setting terminal for the CPU operational mode (fixed at �L� in this set) Setting terminal for the CPU operational mode (fixed at �H� in this set) Setting terminal for the CPU operational mode (fixed at �H� in this set) System reset signal input from the reset signal generator (IC500) and reset switch (SW800) �L�: reset �L� is input for several 100 msec after power on, then it changes to �H� Ground terminal Main system clock input terminal (3.68 MHz) Main system clock output terminal (3.68 MHz) Power supply terminal (+5V) Busy detection signal input from the MSM6688GS (IC100) �H� is output while MSM6688GS (IC100) is executing a command Data write strobe signal output to the MSM6688GS (IC100) �L� is output when data (D0 to D3) are output to the MSM6688GS (IC100) Chip enable signal output to the MSM6688GS (IC100) TIR-WR (pin (§) or TIR-RD (pin `���) is accepted when CE is �L� or CE is �H� respectively TIR-WR (pin (§) or TIR-RD (pin `���) is not accepted when CE is �H� or CE is �L� respectively Reset signal output to the MSM6688GS (IC100) �H�: reset Power down control signal output to the MSM6688GS (IC100) �L�: power down Data read strobe signal output to the MSM6688GS (IC100) �L� is output when data (D0 to D3) are output to the MSM6688GS (IC100) Metal detection signal input terminal �L�: normal position, �H�: metal position Whether a music is present or not from CXA2510AQ (IC250) is detected at auto music sensor �L�: music is present, �H�: music is not present Rotation detect signal input from supply reel sensor and take-up reel sensor on the deck mechanism Tape position (EJECT/FF/REW/ REV/FWD mode) detect input from the tape operation switch on the deck mechanism POS0: �L�: EJECT mode, �H�: others mode POS1: �L�: FF and FWD mode, �H�: others mode POS2: �L�: REW mode, �H�: others mode POS3: �L�: REV and EJECT mode, �H�: others mode

HSTX MD2 MD1 MD0 RESET VSS X0 X1 VCC TIR-BUSY TIR-WR TIR-CE0 TIR-CE1 TIR-RES TIR-PDOWN TIR-RD MTLIN AMSIN REEL POS0 POS1 POS2 POS3

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