Syscon Circuit - JVC HR-S9800U Service Manual

1.7 SYSCON CIRCUIT

1.7.1 Syscon CPU pin function (IC3001) 1/2
PIN NO. LABEL
1 CTL(+)
2 SVSS
3 CTL(-)
4 CTLBIAS
5 CTLFB
6 CTLAMPOUT
7 CTLSMTIN
8 CFG
9 SVCC
10 AVCC
11 NORM/MESEC/S
12 SECAM_DET(H)/KILLER_DET
13 VIDEO_ENV
14 START_SENSOR
15 END_SENSOR
16 IND(L)
17 DD_ABS
18 SCR_ID
19 IND(R)
20 BS_ANT/AFC
21 LED/RF AGC
22 A.ENV/ND(L)
23 AVSS
24 CTL_GAIN
25 LSA
26 LSB
27 LSC
28 CAP_REV(L)
29 RC
30 LOCK(L)/P.SAVE[0.1]
31 P50_IN
32 R.PAUSE/COMPU_IN
33 RAE_OUT/COMPUOUT
34 P50_OUT
35 LMC1
36 LMC2
37 LMC3
38 SB_G(PWM)
39 STB/TEST
40 POWER_DET
41 REC_SAFETY
42 PROTECT
43 VSS
44 RMO
45 VCC
46 EXP2_DATA
47 EXP1_DATA
48 EXP_CLK
49 I2C_DATA_A/V
50 I2C_CLK_A/V
51 S.DATA_TOSYS
52 S.DATA_FRSYS
53 S.CLK
54 SP_FG
55 TU_FG
56 JUST_CLK/EDS(H)
1-10
IN/OUT
IN/OUT CTL(+) SIGNAL
- GND
IN/OUT CTL(-) SIGNAL
- CTL BIAS VOLTAGE
IN CTL PULSE FEEDBACK
OUT CTL PULSE OUTPUT
IN CTL PULSE INPUT
IN CAPSTAN FG PULSE INPUT
- SYSTEM POWER
- SYSTEM POWER FOR ANALOG CIRCUIT
IN SVHS MODE:H
- NC
IN AUTO TRACKING DETECT/INPUT THE AVERAGE OF PLAYBACK VIDEO SIGNAL
IN START SENSOR
IN END SENSOR
IN AUDIO INPUT (LCH) FOR THE FDP AUDIO INDICATOR
IN DYNAMIC DRUM POSITION DETECT
- NC
IN AUDIO INPUT (RCH) FOR THE FDP AUDIO INDICATOR
IN TUNING CLOCK
- NC
IN AUDIO PB FM ENV.INPUT/NON HiFi MODE:L
- GND FOR ANALOG CIRCUIT
OUT CONTROL AMP OUT FREQUENCY RESPONSE SWITCHING
IN MECHANISM MODE DETECT(A)
IN MECHANISM MODE DETECT(B)
IN MECHANISM MODE DETECT(C)
OUT CAPSTAN MOTOR REVERSE CONTROL (FWD:H/REV:L)
IN REMOTE CONTROL DATA INPUT
IN TUNING PLL LOCK DETECT:L
- NC
IN REMOTE PAUSE CONTROL / A/V COMPULINK INPUT
OUT NC / A/V COMPULINK OUTPUT
- NC
OUT LOADING MOTOR DRIVE(1)
OUT LOADING MOTOR DRIVE(2)
OUT LOADING MOTOR DRIVE(3)
OUT VOLTAGE CONTROL SIGNAL FOR VIDEO FREQUENCY RESPONSE
OUT STROBE SIGNAL (FOR FDP DRIVER)
IN DETECTION SIGNAL FOR POWER DOWN OF AC POWER SUPPLY
IN REC SAFETY SWITCH DETECT (SW ON:L)
IN DETECTION SIGNAL FOR SW POWER SUPPLY
- GND
OUT REMOTE CONTROL OUTPUT FOR CABLE BOX
- SYSTEM POWER
IN/OUT SERIAL DATA TRANSFER OUTPUT FOR TUNER/REG CONTROL
IN/OUT SERIAL DATA TRANSFER OUTPUT FOR AUDIO/VIDEO CONTROL
OUT SERIAL DATA TRANSFER CLOCK FOR AUDIO/VIDEO AND TUNER/REG CONTROL
IN/OUT SERIAL DATA TRANSFER OUTPUT FOR THE VIDEO/AUDIO IC
OUT SERIAL DATA TRANSFER CLOCK FOR THE VIDEO/AUDIO IC
IN SERIAL DATA TRANSFER OUTPUT FROM THE ON-SCREEN IC TO THE FDP DRIVER
OUT SERIAL DATA TRANSFER OUTPUT FROM THE FDP DRIVER TO THE ON-SCREEN IC
OUT SERIAL DATA TRANSMISSION CLOCK FROM THE FDP DRIVER TO THE ON-SCREEN IC
IN DETECTION SIGNAL FOR SUPPLY REEL ROTATION/TAPE REMAIN
IN DETECTION SIGNAL FOR TAKE-UP REEL ROTATION/TAPE REMAIN
OUT NC/EDS ON:H
Table 1-7-1 SYSCON CPU pin function(1/2)
FUNCTION