Onkyo TX-8522 - Page 33

TX-8522
driver
control
6dB
amp.
video switch
(4 input 1 output)
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VIDEO OUT A B VIN1 GND VIN2 VCC VIN3 VIN4
S2
(2 pin)
H
L
H
L
S3
(3 pin)
H
H
L
L
VIN1
(4 pin)
ON
OFF
OFF
OFF
VIN2
(6 pin)
OFF
ON
OFF
OFF
VIN3
(8 pin)
OFF
OFF
ON
OFF
VIN4
(9 pin)
OFF
OFF
OFF
ON
LA7956(Video Switch)
IC BLOCK DIAGRAMS AND DESCRIPTIONS
M66005-0001AFP(FL tube drive IC)
~
CS
SCK
SDATA
RESET
Xin
Xout
Vcc1
Vcc2
SERIAL
RECEIVE
CIRCUIT
DISPLAY
CODE RAM
(8 bits
16)
CODE/ COMMAND CONTROL CIRCUIT
INDICATOR
CONTROL
REGISTER
CLOCK
GENERATOR
CIRCUIT
DISPLAY
CONTROLLER
RAM
write
code
selector
CGROM
(35 bits 160)
CGRAM
(35 bits 16)
SEGMENT OUTPUT CIRCUIT
DIGIT
OUTPUT
CIRCUIT
SEG36
SEG28
SEG27
SEG01
P1
P0
Vss
Vp
DECODER
DECODER
~~
DIG16/SEG40
DIG13/SEG37
~
~
DIG12
DIG01
~
1
12
61
64
22
20
21
13
16
15
14
19
60
59
33
32
~
~
31
23
18
17
SEGMENT/DIGIT SELECT/OUTPUT CIRCUIT