Sony XR-C8100R service manual Vsm

Pin No.	Pin Name	I/O	Pin Description
52	MTP	I	Tuner multi-pass input
53	VSM	I	S-Meter voltage detection input
54	VCC	—	Power supply pin (+5 V)
55	RAMBU	I	RAM reset detection input
56	POWSEL	I	Power select initial setting input
57	EQ-SEL	I	Equalizer connection with/without detection initial input
58	TESTIN	I	Test mode setting detection input
59	PACK-IND	O	Door indicator output
60	TIRPLAY	O	Audio line select control output at TIR playback. (C8100R)
61, 62	SUB-SW1, 0	O	Simple SUB WOOFER control output 1, 0
63	VSS	—	GND
64	VOLCE	O	Electric volume serial chip enable output
65	MUTE	O	System mute control output
66	VOLSO/SUBSO	O	Main/Sub volume serial data output
67	VOLCKO/SUBCKO	O	Main/Sub volume serial clock output
68	SUBCE	O	Sub volume serial chip enable output
69	FLASH-W	I	Flash write in mode detection input
70	I2CSIO	I/O	RDS serial data input/output
71	I2CCKO	O	RDS serial clock output
72	RC-IN1	I	Rotary commander input
73	X1A	—	Low speed oscillation input (32.768 kHz)
74	X0A	—	Low speed oscillation input (32.768 kHz)
75	DAVN	I	RDS IC data taking in detection input
76	KEYACK	I	Key input acknowledge
77	BU-IN	I	Back-up power detection input
78	ILLIN	I	Illumination line detection input
79	TELMUTE	I	Telephone mute detection input
80	NOSESW	I	Front panel detachable detection input
81	ACCIN	I	Accessory power detection input
82 – 85	TIR-D0 – D3	I/O	TIR IC command input/output 0 – 3 (C8100R)
86	(VCC)	—	Connect to power supply pin.
87	(VSS)	—	Connect to GND.
88, 89	(VCC)	—	Connect to power supply pin.
90	RST	I	Microcomputer reset input
91	VSS	—	GND
92	X0	—	High speed oscillation input (3.68 MHz)
93	X1	—	High speed oscillation input (3.68 MHz)
94	VCC	—	Power supply pin (+5 V)
95	TIR-BUSY	I	TIR IC BUSY output monitor pin (C8100R)
96	TIR-WR	O	TIR IC data write in pulse output (C8100R)
97, 98	TIR-CE0, 1	O	TIR IC chip enable output (C8100R)
99	TIR-RES	O	TIR IC reset/power down output (C8100R)
100	TIR-PDWN	O	TIR IC power down output (C8100R)
101	TIR-RD	O	TIR IC data read in pulse output (C8100R)
102	MTLIN	I	Auto METAL detection input
103	AMSTIN	I	Tape AMS music detection input
104	REEL	I	Tape reel table rotation detection input
105	POS0	I	Tape position detection input 0
106	POS1	I	Tape position detection input 1
107	POS2	I	Tape position detection input 2
108	POS3	I	Tape position detection input 3
109	LM-EJ	O	Tape loading motor control output (Eject direction)
110	LM-LOD	O	Tape loading motor control output (Loading direction)

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