22 pcx

IC301 SYSTEM CONTROL,TIMER & TUNING CONTROL MPU PIN FUNCTIONS TABLE

No.	Name	l/O	l/O Signal Function
1	STILL + SLCW + X2	O	Signal for indicating STILL, SLOW, and X2 - speed modes.
2	CAP P.	O	Amplitudę control for head motor drive amplifier at SLOW modę.
3	DRUM UP	O	Head drum motor rotation speed up signal.
4	SS + DRUM SHIFT	O	Signal for indicating SLOW/STILL modes and after-naton of drum motor control data (3 vaiue voltage)
5	MC-BR	O	Brake signal for capstan motor.
6	C - Vs CUT	0	Cut off for capstan motor control vołtage in SLOW / STILL modes.
7	0 /1 DATA	1	CTL pulse dtóy detection signal input. Used for VISS detection.
8	REMOCON	1	Remote control signal input.
9	SW DATA 2	1	Data indicating operation position of mechanism. (0V : SEACH, STILL, SLOW, STOP, PLAY, and REC modes) (5V: EJECT, REW, and INITIAL modes)
10	FL- START + SAFTYSW	1	Terminal for detecting the start of cassette loading or discharge by cassette mechanism and detecting accidental erasure prevention tab of cassette tape.
11	TEST	-	.
12	RESET	1	Initial reset terminal for this IC.
13	XT1	-	Cłock OSC during power failures, Frequency is 32.672kHz.
14	XT2	.
15	GND	-	Ground terminal
16	CF1	-	IC cłock OSC terminal. Frequency is 12.0MHz.
17	CF2	-
18	VDD(5V)	-	IC power suppty terminal.(5Vdc)
19	TAPE END S.	1	Sensor signal input for tape end detection.
20	TAPETOP S.	1	Sensor signal input for tape beginning detection.
21	T.REEL.S	1	Pulse input for detection of tate-up reel tabie rotation.
22	SW DATA 0+1	1	Data indicating operation position of mechanism. (2V: EJECT, REW, and INITIAL modes) (3.4V: STOP. PLAY, REC, and F-SEACH modes) (2.5V:STILL and SLCW modes) (5V:R-SEACH modę)
23	TAPE SPEED		Input of result of tape speed discrimination by digital servo IC.
24	AFT C		Tuner AFT S-curve signal input for tuner AFT function.
25	ENV.		Video head envelope detection signal input for ATR function.
26	HIFI ENV		HiFi audio head envelope detection signal input for ATR function.
27			-
28			-
29			-
30			-
31	H SYNC ( SD )		Sync. detecton signal input for existing channel discrimination.
32			-
33	CTL P.	1	CTL head recording / playback pulse signal input.
34	C - FG P.		FG signal input of capstan motor.
35	RFSWP.	1	Input of switching pulse creeted by head drum PG.
36			-
37	-		-
38		-	-
39	GRID8	o	Display grid outputs (FLD).
40	GRID7	0
41	GRID6	o
42	GRID5	o
43	GRID4	0
44	GRID3	0
45	GRID2	0
46	GRID1	0

No.	Name	l/O	l/O Signal Function
47	VDD		IC power suppty input for back up.(5Vdc)
48	V LOAD	O	-23V input for FLD drive.
49	SEG I	0	Display segment outputs (FLD). (Inciudes key-scan output)
50	SEGk	0
51	SEG j	0
52	SEG i	0
53	SEG h	0
54	SEG g	0
55	SEG f	0
56	SEGe	0
57	SEG d	o
58	SEG c	0
59	SEG b	0
60	SEG a	0
61	-	-	-
62	-	-	-
63	-	-	-
64	-	-	-
65	KEYIN0	I	Operation key data inputs.
66	KEY IN 1	I
67	KEY IN 2	I
68	CABLE BOX CS	I	Chip enabłe (access) signal to contro! the cabie box
69	-	.	-
70	-	.	-
71	HiFi	I	HiFi modę indicating signal input from audio Circuit.
72	POWER DOWN	I	Power faiiure dectbn tirminal.
73	SV S. DATA	0	Output 8-bit X 4 serial data giving operation modę and tracking data,etc., to digital sera IC.
74	OSDCS	0	Chip enabłe (access) signal output to OSD IC.
75	SV S CLK	0	The cłock pulse for digital servo IC.
76	COMMON DATA	l/O	Terminal for communicatbn of respectMe data with OSD IC, AUDIO IC, Pa tuning IC, and cabie box.
77	I2C DATA	l/O	Data exchange with the VCR+ data memory (I2C) IC.
78	COMMON CLK	O	Clock pulse for OSD. Pa. AUDIO, and cabie box.
79	HiFi CS	0	Chip enabłe (access) signal output to AUDIO IC.
80	pa CS	0	Chip enabłe signal output to PLL tuning system IC.
81	AV 1 /AV 2	0	Extemal input source (AV1/2) selection.
82	INPUT SEL V	0	Video input source (TU / AV) selection.
83	LPH	0	Signal for indicating LP modę tape speed.
84	STEREO		Stereo modę indicating signal input frpm decoder.
85	SAP		SAP modę indicating signal input from decoder.
86	BIL CTL.	0	Bilingual modę indicating signal output to decoder.
87	MTSCTL.	0	MTS / MONO selection signal output to decoder.
88	TUNERA MUTE	0	Signal for disable tuner-IF audio signal.
89	VSS(GND)	-	IC ground terminal.
90	VDD	-	IC power supply input.(5Vdc)
91	ML- SPEED	0	Loading motor rotation speed (Lcw.Med.Hi) indication signal.
92	ML- DIM.	0	Loading motor rotation direction (FWD,REV) indication signal.
93	-	-	-
94			-
95	RECH	0	Signal for indicating recording modę.
96	PB (L)	0	Signal for indicating playback modę.
97	A MUTE	0	Signal for disable audio output signal.
98	DMSS. CLK.	0	The dock pulse for D.M.S.S. system IC.
99	ANT VTR	0	Signal for selecting ANTENNAorVTR.
100	POWER UP	0	"HIGH" output excepł when power is off. Indicating that power is ON.

JC9H.TTS