Kenwood KRF-V7773D Service Manual page 10

KRF-V7773D/V7773D-B/V9993D
5-12 Volume IC : TC9459F(X11,IC301-304)
CHIP SELECT CODE
CS1(9Pin) CS2(16Pin)
L L
H L
L H
H H
6. Sub Microprocessor : uPD784036(X08,IC40)
6-1 Sub Microprocessor Periphery Block Diagram
6-2 Pin Description
Pin No. Pin Name
1 DIR_PD
2 DIR_CS
3 REC_6dB
4 CTRL_A
5 CTRL_B
6 FSC_CTRL
7 RESET
8 VDD
9 X2
10 X1
11 VSS
12 COMP_A_A
13 COMP_A_B
14 COMP_A_C
15 COMP_A_D
16 COMP_A_E
17 COMP_B_A
18 COMP_B_B
19 COMP_B_E
20 VSEL
10
CIRCUIT DESCRIPTION
OUTPUT PORT
Lch Room A Rch
Rch Room A Lch
Lch Room A RSch/Sp. B Rch
Rch Room A LSch/Sp. B Lch
Lch Room A SWch
Rch Room A Cch
Lch Room B Rch
Rch Room B Lch
X13, IC23
Main u-com
X25, IC11
X13, IC55
Digital
Selector
X13(IC1,2,4,5,
7-10)
Video Selector
I/O
O DIR Power Down
O DIR Chip Select
O REC Gain Changeover(When HDCD +6dB )
O Video Selector Control A(9993)
O Video Selector Control B(9993)
O Video Selector FSC Control(9993)
I Reset in
+5V Power Supply
- 8.0MHz Oscillator
- 8.0MHz Oscillator
- Connected to GND
O Composite Select RoomA A
O Composite Select RoomA B
O Composite Select RoomA C
O Composite Select RoomA D
O Composite Select RoomA E
O Composite Select RoomB A
O Composite Select RoomB B
O Composite Select RoomB E
O VSEL
CHANNEL
X08, IC40
Sub u-com
uPD784036
X08, IC21
DSP
Description
X08, IC4
A/D
X08, IC5-7
A/D
X08, IC25
DIR
(A K 4112)
H : +6dB on