Kenwood VR 3080 Service Manual - Page 8

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KRF-V7772D/VR-3080 CIRCUIT DESCRIPTION 4-2 Pin description Pin No. Name I/O Connect Description 1-8 REM_D0-D7 O P.D. LCD REMOTE DATA OUT-7 9 VDD - - +5V 10-13 TSW3-0 I - TUNER DESTINATION SWITCH3-0 14 ENC_A I - VOLUME ENCODER INPUT A 15 ENC_B I - VOLUME ENCODER INPUT B 16 - I P.D. Not used 17 T_MUTE O P.U. TUNER MUTE 18 PLL_CLK O P.D. PLL(LC72131) CLOCK 19 PLL_DATA O P.D. PLL(LC72131) DATA 20 PLL_DO I P.D. PLL(LC72131) DO 21 PLL_CE O P.D. PLL(LC72131) CE 22 TEST/VPP - - GND 23 PLL_SD I P.U. PLL(LC72131) SD 24 PLL_STEREO I P.U. PLL(LC72131) STEREO 25-28 WIDE_V1-4 I P.U. VIDEO1-4 S1 WIDE DETECTOR 29 WIDE_AUX I P.U. AV AUX S1 WIDE DETECTOR 30 WIDE_OUT O P.D. MONITOR OUT S1 WIDE INPUT 31 VIDEO_MUTE O P.D. VIDEO MUTE (mute on:H) 32 TONE_ST O P.D. TONE(TC9184) STROBE 33 VOL_ST O P.D. VOLUME(TC9412) STROBE 34 VOL_DATA O P.D. VOLUME(TC9412), TONE(TC9184) DATA 35 VOL_CLK O P.D. VOLUME(TC9412),TONE(TC9184)CLOCK 36 CE I P.D. CHIP ENABLE 37 VDD - - +5V 38 X2 - - 12.5MHz 39 X1 I - 12.5MHz 40 VSS - - GND 41,42 XT2,1 - - Not used 43 RESET I - RESET 44 REM0 I P.D. REMOTE CONTROLLER SIGNAL INPUT 0 (FRONT PANEL) 45 REM1 I P.D. REMOTE CONTROLLER SIGNAL INPUT 1 (IR RECEIVER) 46 CODEC_CS I P.D. CODEC(CS4226) CHIP SELECT 47 CODEC_ERR I P.D. CODEC(CS4226) ERROR DETECT 48 CODEC_AC3 I P.D. CODEC(CS4226) AC-3(DOLBY DIGITAL, DTS, MPEG DETECT 49 DSP_DTS I P.D. DSP(YSS912) DTS DETECT 50 DSP_AC3 I P.D. DSP(YSS912) AC-3 DETECT 51 AVDD - - +5V 52 AVREF0 - - GND 53 DATA_DET I P.D. DIR DATA DETECT 54 CODEC_FREQ1 I P.D. CODEC(CS4226) CHANNEL STATUS FREQ. BIT 1 55 CODEC_FREQ0 I P.D. CODEC(CS4226) CHANNEL STATUS FREQ. BIT 0 56,57 Not used I - GND 58 CODEC_AUDIO I P.D. CODEC(CS4226) non AUDIO DETECT 59 DSP_NPCM I P.D. DSP(YSS912) non PCM DETECT 60 DSP_SENC I P.D. DSP(YSS912) SURROUND ENCODE DETECT 61 AVSS - - GND 62 DSP_CS_A O P.D. DSP(YSS912) CHIP SELECT 63 DSP_CS_B O P.D. DSP(YSS912) SUB DSP CHIP SELECT 64 AVREF1 - - +5V 65 8 DSP_SI I P.D. DSP(YSS912), CODEC(CS4226)DATA IN

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KRF-V7772D/VR-3080
8
CIRCUIT DESCRIPTION
Pin No.
Name
I/O
Connect
Description
1-8
REM_D0-D7
O
P.D.
LCD REMOTE DATA OUT-7
9
VDD
-
-
+5V
10-13
TSW3-0
I
-
TUNER DESTINATION SWITCH3-0
14
ENC_A
I
-
VOLUME ENCODER INPUT A
15
ENC_B
I
-
VOLUME ENCODER INPUT B
16
-
I
P.D.
Not used
17
T_MUTE
O
P.U.
TUNER MUTE
18
PLL_CLK
O
P.D.
PLL(LC72131) CLOCK
19
PLL_DATA
O
P.D.
PLL(LC72131) DATA
20
PLL_DO
I
P.D.
PLL(LC72131) DO
21
PLL_CE
O
P.D.
PLL(LC72131) CE
22
TEST/VPP
-
-
GND
23
PLL_SD
I
P.U.
PLL(LC72131) SD
24
PLL_STEREO
I
P.U.
PLL(LC72131) STEREO
25-28
WIDE_V1-4
I
P.U.
VIDEO1-4 S1 WIDE DETECTOR
29
WIDE_AUX
I
P.U.
AV AUX S1 WIDE DETECTOR
30
WIDE_OUT
O
P.D.
MONITOR OUT S1 WIDE INPUT
31
VIDEO_MUTE
O
P.D.
VIDEO MUTE (mute on:H)
32
TONE_ST
O
P.D.
TONE(TC9184) STROBE
33
VOL_ST
O
P.D.
VOLUME(TC9412) STROBE
34
VOL_DATA
O
P.D.
VOLUME(TC9412), TONE(TC9184) DATA
35
VOL_CLK
O
P.D.
VOLUME(TC9412),TONE(TC9184)CLOCK
36
CE
I
P.D.
CHIP ENABLE
37
VDD
-
-
+5V
38
X2
-
-
12.5MHz
39
X1
I
-
12.5MHz
40
VSS
-
-
GND
41,42
XT2,1
-
-
Not used
43
RESET
I
-
RESET
44
REM0
I
P.D.
REMOTE CONTROLLER SIGNAL
INPUT 0 (FRONT
PANEL)
45
REM1
I
P.D.
REMOTE CONTROLLER SIGNAL
INPUT 1 (IR RECEIVER)
46
CODEC_CS
I
P.D.
CODEC(CS4226) CHIP SELECT
47
CODEC_ERR
I
P.D.
CODEC(CS4226) ERROR DETECT
48
CODEC_AC3
I
P.D.
CODEC(CS4226) AC-3(DOLBY DIGITAL, DTS, MPEG DETECT
49
DSP_DTS
I
P.D.
DSP(YSS912) DTS DETECT
50
DSP_AC3
I
P.D.
DSP(YSS912) AC-3 DETECT
51
AVDD
-
-
+5V
52
AVREF0
-
-
GND
53
DATA_DET
I
P.D.
DIR DATA DETECT
54
CODEC_FREQ1
I
P.D.
CODEC(CS4226) CHANNEL STATUS FREQ. BIT 1
55
CODEC_FREQ0
I
P.D.
CODEC(CS4226) CHANNEL STATUS FREQ. BIT 0
56,57
Not used
I
-
GND
58
CODEC_AUDIO
I
P.D.
CODEC(CS4226) non AUDIO DETECT
59
DSP_NPCM
I
P.D.
DSP(YSS912) non PCM DETECT
60
DSP_SENC
I
P.D.
DSP(YSS912) SURROUND ENCODE DETECT
61
AVSS
-
-
GND
62
DSP_CS_A
O
P.D.
DSP(YSS912) CHIP SELECT
63
DSP_CS_B
O
P.D.
DSP(YSS912) SUB DSP CHIP SELECT
64
AVREF1
-
-
+5V
65
DSP_SI
I
P.D.
DSP(YSS912), CODEC(CS4226)DATA IN
4-2 Pin description