Kenwood KRF-V7771D Service Manual page 10

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4-2 Pin description
Pin No. Pin Name
1 VOL_STB
2 VOL_CLK
3 VOL_DATA
4 SEL_STB1
5 SEL_STB2
6 VIDEO_STB
7 SEL_CLK
8 SEL_DATA
9 –
10, 11 X2, 1
12 Vdd
13, 14 XT2, 1
15 RESET
16 REMOCON_IN1
17 REMOCON_IN2
18 RDS_DATA
19 RDS_CLK
20, 21 NC
22 CE
TE
L 13942296513
23 AVdd
24 AVrefo
25 RDS_SLEVEL
26 T_MUTE
27 PLL_CLK
28 PLL_DATA
29 PLL_CE
30 SD
31 STEREO
32 PLL_DO
33 AVss
34 SUB_RESET
35 V_PDET
36 AVref1
37 UART_RXD
38 UART_TXD
39 VSEL_TR
40 Vss
41 SDT
42 MDT
www
43 MCK
44 MREQ
.
CIRCUIT DESCRIPTION
I/O Connect
O PD VOLUME IC CE (TC9412AP/TC9413AP)
O PD VOLUME IC CLOCK (TC9412AP/TC9413AP)
TONE IC CLOCK (TC9184AP)
O PD VOLUME IC DATA (TC9412AP/TC9413AP)
TONE IC DATA (TC9184AP)
O PD ANALOG SW. STROBE (NJU731x)
O PD ANALOG SW. STROBE (NJU7311-NJU7313)
O PD VIDEO IC STROBE (NJU3713)
O PD ANALOG SW. CLOCK (NJU7311-NJU7313)
VIDEO IC CLOCK (NJU3713D)
O PD ANALOG SW. DATA (NJU7311-NJU7313)
VIDEO IC DATA (NJU3713D)
– PD NO USED
– – MAIN CLOCK 4.19MHz (CERAMICS)
– +5V +5V
– OPEN NO USED
I VDD uCOM RESET
I – FRONT PANEL REMOCON
I – EXTERNAL REMOCON
I PD RDS DATA (SAA6579)
I PD RDS CLOCK (SAA6579)
I PD NO USED
I – BACK UP CE
– VDD +5V
I VDD A/D POWER SUPPLY
I PD RDS SLEVEL (SAA6579)
O PD TUNER MUTE
O PD PLL IC CLOCK (LC73131)
O PD PLL IC DATA (LC72131)
O PD PLL IC CE (LC72131)
I PU SD INPUT
I PU STEREO INPUT
I PD PLL IC LC72131 DO (LC72131)
– VSS GND
O PD SUB uCOM RESET (uPD78058GC-A74)
I PU PERFECT MACRO VIDEO POWER DETECT
I VDD +5V
I PD MEGA CHANGER CD DATA RECEIVE
POWER LINE REMOCON CODE RECEIVE
O PD MEGA CHANGER CD DATA TRANSMIT
POWER LINE REMOCON CODE TRANSMIT
O PD PERFECT MACRO VIDEO SELECTOR POWER SUPPLY SW. Tr
– GND GND
I PD uCOM-uCOM COMMUNICATION SLAVE DATA
(uPD78058GC-A74)
O PD uCOM-uCOM COMMUNICATION MASTER DATA
(uPD78058GC-A74)
O PD uCOM-uCOM COMMUNICATION MASTER CLOCK
(uPD78058GC-A74)
x ao u163
y
O PD uCOM-uCOM COMMUNICATION MASTER REQUEST
i
(uPD78058GC-A74)
KRF-V7771D/V8881D/VR-2080/2090
2 9
8
Description
Q Q
3 6 7 1 3 1 5
co
.
9 4 2 8
0 5 8 2 9 9 4 2 8
m
9 9
9 9
11