Sony HCD-XG500 Service Manual - Page 50

HCD-XG60/XG500 7-30. IC PIN FUNCTION DESCRIPTION • MAIN BOARD IC501 M30622MAA-A92FP (SYSTEM CONTROLLER (CD MECHANISM CONTROL)) Pin No. Pin Name 1 STK-POWER I/O Description O Power amplifier on/off selection signal output "L": standby mode, "H": power amplifier on 2 POWER O Power on/off control signal output for the audio system (+5V) and deck, panel, audio system (+7V) and FM/AM tuner unit (+10V) "L": standby mode, "H": power on 3 F-RELAY O Relay drive signal output for the front speaker protect "H": relay on 4 REAR-RELAY O Relay drive signal output for the rear speaker protect "H": relay on Not used (open) 5 CD-POWER O Power on/off control signal output for the CD mechanism deck section "L": standby mode, "H": power on 6 LINE-MUTE O Line muting on/off control signal output "L": muting on, "H": muting off 7 DBFB-H/L O DBFB normal/high selection signal output to the M62493FP (IC101) "L": DBFB high, "H": DBFB low (normal) 8, 9 - - Connect to ground 10 XC-IN I Sub system clock input terminal (32.768 kHz) 11 XC-OUT O Sub system clock output terminal (32.768 kHz) 12 RESET I System reset signal input from the reset signal generator (IC801) "L": reset For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H" 13 X-OUT O Main system clock output terminal (16 MHz) 14 VSS - Ground terminal 15 X-IN I Main system clock input terminal (16 MHz) 16 VDD - Power supply terminal (+5V) 17 NMI I Non-maskable interrupt input terminal Fixed at "H" in this set 18 WAKE UP I Wakeup control signal input from the fluorescent indicator tube driver (IC601) "L" active 19 SCOR I Subcode sync (S0+S1) detection signal input from the CXD2587Q (IC101) 20 RDS-INT I Serial data transfer clock signal input from the RDS decoder on the FM/AM tuner unit (Used for the AEP and UK models) 21 RDS-DATA I Serial data input from the RDS decoder on the FM/AM tuner unit (Used for the AEP and UK models) 22 AC-CUT I AC off detection signal input from the reset signal generator (IC801) "L": AC cut checked 23 PL-CLK O Serial data transfer clock signal output to the pro-logic circuit Not used (open) 24 PL-DATA O Serial data output to the pro-logic circuit Not used (open) 25 PL-LAT O Serial data latch pulse output to the pro-logic circuit Not used (open) 26 TIMER LED O LED drive signal output terminal Not used (open) 27 PROTECT I Protect on/off detection signal input from the speaker protect circuit "L": protect on, "H": protect off 28 V MUTE O Video muting on/off control signal output to the BA7615N (IC191) "L": muting off, "H": muting on 29 IIC-CLK I/O Communication data reading clock signal input or transfer clock signal output with the fluorescent indicator tube driver (IC601) 30 IIC-DATA I/O Communication data bus with the fluorescent indicator tube driver (IC601) 31 NO-USE O Not used (open) 32 SQ-DATA I Subcode Q data input from the CXD2587Q (IC101) 33 SQ-CLK I Subcode Q data reading clock signal output to the CXD2587Q (IC101) 34 SW-MODE O Music/movie mode selection signal output to the M62493FP (IC101) "L": movie mode , "H": music mode 35 CD-DATA O Serial data output to the CXD2587Q (IC101) 36 H/P IN I Connection detection signal input of the headphone jack (J803) "L": no connected, "H": headphone connected 37 CD-CLK O Serial data transfer clock signal output to the CXD2587Q (IC101) 38 493-LAT O Serial data latch pulse output to the M62493FP (IC101) 50