Ic Block Diagrams And Descriptions - Onkyo TX-SR800 Service Manual

IC BLOCK DIAGRAMS AND DESCRIPTIONS

TC94A07F(Electric Volume)
VSS
1
Trim volume
0 to +24 dB
1 dB step
L-TVR-REF
2
L-TVR-IN
3
L-TVR-OUT
4
L-MVR-OUT
5
Main volume
0 to -95 dB
1 dB step
L-MVR-AGND
6
L-MVR-IN
7
CS1
9
GND
11
CK
12
Trim volume
0 to +24 dB
1 dB step
Main volume
0 to -95 dB
1 dB step
24 bit Shift Register
Circuit
Level Shift Circuit
8,10,15,17:NC
No. Symbol
24
VDD
1
24 VDD
11 GND
2
23 R-TVR-REF
3
22 R-TVR-IN
23
R-TVR-REF
4
21 R-TVR-OUT
5
20 R-MVR-OUT
6
19 R-MVR-AGND
22
R-TVR-IN
7
18 R-MVR-IN
8
16 CS2
12 CK
13 DATA
14 STB
21
R-TVR-OUT
8
10
15
17
20
R-MVR-OUT
19
R-MVR-AGND
18
R-MVR-IN
16
CS2
14
STB
13
DATA
TX-SR800
Terminal
Negative power source
VSS
Positive power source
Digital ground
Trim volume analog
L-TVR-REF
reference terminals
Trim volume input
L-TVR-IN
terminals
Trim volume output
L-TVR-OUT
terminals
Main volume output
L-MVR-OUT
terminals
Main volume analog
L-MVR-AGND
reference terminals
Main volume input
L-MVR-IN
terminals
Chip select code switch
CS1
terminals
Clock input
Data input
Strobe input
No connection
NC