Sony DPS-V77 service manual PBO PB7, Reso, Gnd, Rxdi, Scki, DO-D7, AO-A7, Stby

IC614 HD6413002F10 (MASTER CONTROLER)

	Pin No.		Pin name	I/O	Description
1			Vee	-	Power supply. (+5V)
2 - 8			PBO - PB7	0	Key decorder matrix output.
9			PB7	0	Data enable output to parallel I/O (IC903).
10			RESO	0	Reset signal output. (Not used)
11			Vss	-	GND
12			TXDO	0	Serial data output for communications.
	13		TXDI	0	Serial data output for communications.
	14		RXDO	I	Serial data input for communications.
	15		RXDI	I	Serial data input for communications.
	16		P94	I	REDY signal input.
	17		SCKI	0	Serial data timing clock output.
	18		P40 (0)	0	Data I/O select signal output to clock IC (IC613).
	19		P41 (I/O)	I/O	Data I/O terminal to clock IC (IC613).
	20		P42 (0)	0	Serial data timing clock output.
	21		P43 (0)	0	Chip enable output to clock IC (IC6l3).
	22		Vss	-	GND
	23		P44 (BYPS)	0	Bypass relay switch output.
	24		P45 (MUTE)	0	Bypass mute switch output.
	25		P46 (XRST)	0	Reset output terminal.
	26		P47 (AD_PD)	0	Power down mode signal output to AID converter IC (IC304).
	27 -	34	DO-D7	I/O	Data signal input/output terminal to data bus line.
	35		Vee	-	Power supply. (+5V)
	36 -	43	AO-A7	0	Address data output to address bus line.
	44		Vss	-	GND
	45 -	55	A9 - Al8	0	Address data output to address bus line.
	56		A19	0	Not used.
	57		Vss	-	GND
	58		P60 (RELAY MUTE)	0	Initial mute output.
	59		P6l (EClO_O)	0	Conditional jump output to DSP (IC602).
	60		P62 (EClO))	0	Conditional jump output to DSP (IC604).
	61		PHAI	0	System clock output.
	62		STBY	I	Standby input. (Fixed "H" level)
	63		RES	I	Reset signal input.
	64		NMI	I	Non maskable intrude signal input. (Fixed "L" level)
	65		Vss	-	GND

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