Kenwood KRF-V7771D Service Manual page 9
Audio video surround receiver
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Also See for KRF-V7771D:
- Instruction manual (77 pages) ,
- Service manual (62 pages) ,
- Setup (12 pages)
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4-2 Pin description
Pin
Name
I/O
1
SEL_STB
O
VOLUME IC CE (TC9412AP/TC9413AP)
2
VOL_CLK
O
VOLUME IC CLOCK (TC9412AP/TC9413AP)
3
VOL_DATA
O
VOLUME IC DATA (TC9412AP/TC9413AP)
4
SEL_STB1
O
ANALOG SW. STROBE (TC9163/TC9164)
5
SEL_STB2
O
ANALOG SW. STROBE (TC9162/TC9163)
6
VIDEO_STB
O
VIDEO IC STROBE (NJU3713D)
7
SEL_CLK
O
ANALOG SW. CLOCK (TC9162-TC9164)
8
SEL_DATA
O
ANALOG SW. DATA (TC9162-TC9164)
9
IC(VPP)
–
NO USED
10
X2
–
MAIN CLOCK 4.19MHz (CERAMICS)
11
X1
I
MAIN CLOCK 4.19MHz (CERAMICS)
12
VDD
–
+5V
13, 14
XT2, 1
–
NO USED
15
RESET
I
uCOM RESET
16
REMOCON_IN1
I
REMOCON
17
6CH_2CH
I
VIDEO 4 ANALOG INPUT 6ch/2ch SELECT
18
RDS_DATA
I
RDS DATA (SAA6579)
19
RDS_CLK
I
RDS CLOCK (SAA6579)
20, 21
NC
I
NO USED
22
CE
I
BACK UP CE PORT
23
AVDD
–
+5V
24
AVREF0
I
A/D POWER SUPPLY
25
RDS_SLEVEL
I
RDS SLEVEL (SAA6579)
26
T_MUTE
O
TUNER MUTE
27
PLL_CLK
O
PLL IC CLOCK (LC72131)
28
PLL_DATA
O
PLL IC DATA (LC72131)
29
PLL_CE
O
PLL IC CE (LC72131)
30
SD
I
SD INPUT
31
STEREO
I
STEREO INPUT
32
PLL_DO
I
PLL IC DO (LC72131)
33
AVSS
–
GND
34
SUB_RESET
O
SUB uCOM RESET (uPD78056GC-A23)
35
V_PDET
I
PERFECT MACRO VIDEO POWER DETECT
36
AVREF1
–
+5V
37
UART_RXD
I
MECHA • CHANGER CD UART DATA RECEIVE (CD TEXT)
38
UART_TXD
O
MECHA • CHANGER CD UART DATA TRANSMIT (CD TEXT)
39
VSEL_TR
O
PERFECT MACRO VIDEO SELECTOR POWER SASW. Tr. CONTROL
40
VSS
–
GND
41
SDT
I
uCOM-uCOM COMMUNICATION SLAVE DATA
42
MDT
O
uCOM-uCOM COMMUNICATION MASTER DATA
43
MCK
O
uCOM-uCOM COMMUNICATION MASTER CLOCK
44
MREQ
O
uCOM-uCOM COMMUNICATION MASTER REQUEST
45
SREQ
I
uCOM-uCOM COMMUNICATION SLAVE REQUEST
46
FL_DOUT
I
FL DRIVER DATA IN
47
FL_DIN
O
FL DRIVER DATA OUT
48
FL_CLK
O
FL DRIVER CLOCK
49
FL_STB
O
FL DRIVER STROBE
50, 51 VSEL_CTL A, B
O
PERFECT MACRO VIDEO SELECTOR CONTROL A, B
52~54
FAN_1-3
I
FAN DETECT 1-3
55
SDATA
I/O SERIAL DATA
56
SBUSY
I/O SERIAL BUSY
57
RELAY_A
O
SPEAKER A RELAY
58
RELAY_B
O
SPEAKER B RELAY
59
RELAY_CS
O
CENTER/SURROUND SPEAKER RELAY
60
RELAY_TR
O
TR. RELAY
Description
TONE IC CLOCK (TC9184AP)
TONE IC DATA (TC9184AP)
VIDEO IC CLOCK (NJU3713D)
VIDEO IC DATA (NJU3713D)
L : 2ch H : 6ch
L : VIDEO POWER ON, H : VIDEO POWER OFF
(uPD78056GC-A23)
(uPD78056GC-A23)
(uPD78056GC-A23)
(uPD78056GC-A23)
(uPD78056GC-A23)
Pin
Name
I/O
61
RELAY_POWER O
POWER RELAY
62
EXT_OUT
O
EXTERNAL RELAY CONTROL
63
NC
O
NO USED
64
DRV_RST
O
FL DRIVER RESET
65
TV_PDET
I
PERFECT MACRO TV POWER DETECT
66
9991_7771
I
TYPE SELECT
67
8_16
I
SERIAL SELECT
68
ENC_VOL2
I
VOLUME ENCODER IN
69
ENC_VOL1
I
VOLUME ENCODER IN
70
PROTECTION1
I
PROTECT VOLTAGE DETECT
71
VSS
–
GND
72
PROTECTION2
I
PROTECT CURRENT DETECT
73
NC
I
NO USED
74~77
TSW_0
I
TUNER DESTINATION SW. 0-3
78~82
NC
–
NO USED
83
SMK_REQ
O
REMOCON DATA TRANSMIT IC REQ
84
SMK_ENB
I
REMOCON DATA TRANSMIT IC ENB
85
SMK_RWR
I
REMOCON DATA TRANSMIT IC RWR
86~93
SMK_D0-7
O
REMOCON DATA TRANSMIT IC D 0-7
94
MUTE_A
O
ROOM A MUTE
95
NC
O
NO USED
96
SW_MUTE
O
SWch MUTE
97
-20dB_ATT
O
-20dB ATTENUATER
98
VIDEO_MUTE
O
VIDEO MUTE
99
SCH_MUTE
O
Sch MUTE
100
TONE_STB
O
TONE IC CE (TC9184AP)
Description
L : TV POWER OFF, H : TV POWER ON
L : KRF-V7771D, H : KRF-X9991D
L : SERIAL 16bit, H : SERIAL 8bit
L : OFF, H : ON
L : OFF, H : ON
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