SONY XRC6090
Service Manual

6-5. IC PIN FUNCTION DESCRIPTION
� MAIN BOARD IC501 µPD78058GC-F58-3B9 (SYSTEM CONTROLLER) Pin No. 1 2 3 4 Pin Name DSEL RC IN0 SD IN AVSS I/O I I I � Function Destination setting terminal (frequency select switch (S502) input terminal) �L�: AM 9k step or FM 50k step, �H�: AM 10k step or FM 220k step Rotary remote commander shift key A/D input terminal Station detector detect input from the FM/AM tuner unit (TU1) Stop level for SEEK, BTM, etc. is determined SD is present at input of �H� Ground terminal (for A/D converter) Input of FM stereo detection signal from FM/AM tuner unit (TU1), and output of forced monaural control signal to FM/AM tuner unit (TU1) (Commonly used for stereo display input and forced monaural output) FM stereo detection at input of �L�, forced monaural at output of �L� PLL serial chip enable output to the FM/AM PLL (IC1) Reference voltage (+5V) input terminal (for D/A converter) PLL serial data input from the FM/AM PLL (IC1) PLL serial data output to the FM/AM PLL (IC1) PLL serial data transfer clock signal output to the FM/AM PLL (IC1) Polar stereo signal input terminal Not used (fixed at �H�) Serial data output to the liquid crystal display driver (IC901) Serial data transfer clock signal output to the liquid crystal display driver (IC901) Chip enable output to the liquid crystal display driver (IC901) Blank indicate control signal output to the liquid crystal display driver (IC901) �L�: no display Serial data input from the bus interface (IC701) (for SONY bus) Serial data output to the bus interface (IC701) (for SONY bus) Serial data reading clock signal input terminal (for SONY bus) Serial data transfer clock signal output to the bus interface (IC701) (for SONY bus) Bus on/off control signal output to the bus interface (IC701) (for SONY bus) �L�: bus on Reset signal output to the bus interface (IC701) (for SONY bus) �L�: reset Standby control signal output to the power amplifier (IC611) �L�: standby Muting control signal output to the power amplifier (IC611) �L�: muting on Tuner system power supply on/off control signal output to the BA3918 (IC671) �H�: tuner on FM system power supply on/off control signal output to the BA3918 (IC671) �H�: FM on Main system power supply on/off control signal output to the BA3918 (IC671) �H�: power on Input terminal to set whether the illumination color change function is present or not �L�: illumination color change function is present (fixed at �H� in this set) Tape auto music sensor control signal output to the CXA2510Q (IC301) �L� is output to lower the gain for audio level at FF/REW Reel table rotation detect signal input from the take-up and supply reel sensor Input terminal to set whether the auto metal function is present or not �L�: auto metal function is present Not used this function in this set (fixed at �H�) Tape position detect input from the tape operation switch on the mechanism block Ground terminal Tape position detect input from the tape operation switch on the mechanism block Loading/tape operation motor control signal output to the LB1638M (IC361) (For the loading direction and forward side operation) *1

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PLLCE AVREF1 PLLSI PLLSO PLLCKO P-STIN LCDSO LCDCKO LCDCE LCDINH UNISI UNISO UNICKI UNICKO BUSON SYSRST AMPON AMP MUT TUNON FM ON PW ON COLOR AMSON REL MTLIN POS3 POS2 GND POS0 POS1 LM LOD

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