Onkyo TX-SR800, Service Manual

Page: 64 / 88

TX-SR800
IC BLOCK DIAGRAMS AND DESCRIPTIONS
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
V
SS
V
DD
GND CK DATA STB
LEVEL SHIFT REGISTER
CIRCUIT
(R-ch)
10bit
Latch
Circuit
(Same
as L-ch
Circuit)
(L-ch)
10bit
Latch
Circuit
2
3
4
5
6
7
8
9
10
11
12
27
26
25
24
23
22
21
20
19
18
17
13 14 15 16
1
28
TC9273F-004(Analog Switch Array)
Pin No. Symbol Description
1 Vss Negative power supply pin
13 GND Digital ground pin
28 VDD Positive power supply pin
2/27 S1
3/26 S2
4/25 S3
5/24 S4
6/23 S5
7/22 S6
8/21 S7
9/20 S8
10/19 S9
11/18 S10
12/17 S11
14 CK Clock input pin for data transfer.
15 DATA Serial data input pin for setting switches.
16 STB Strobe input pin for data writing.
Input/Output pins
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
S15
S16
S17
S18
V
SS
V
DD
(R-ch)
18bit
Latch
Circuit
(Same
as L-ch
Circuit)
(L-ch)
18bit
Latch
Circuit
2
3
4
5
6
7
8
9
10
11
12
GND CK DATA STB
LEVEL SHIFT REGISTER
CIRCUIT
20 21 22 23
1 42
TC9274N-008(Analog Switch Array)
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
S15
S16
S17
S18
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
Pin No. Symbol Description
1 Vss Negative power supply pin
20 GND Digital ground pin
42 VDD Positive power supply pin
3-19 S1-S18
41-24 S1-S18
21 CK Clock input pin for data transfer.
22 DATA Serial data input pin for setting switches.
23 STB Strobe input pin for data writing.
Input/Output pins
TC9273F-017(Analog Switch Array)
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
V
SS
V
DD
GND CK DATA STB
LEVEL SHIFT REGISTER
CIRCUIT
(R-ch)
10bit
Latch
Circuit
(Same
as L-ch
Circuit)
(L-ch)
10bit
Latch
Circuit
2
3
4
5
6
7
8
9
10
11
12
27
26
25
24
23
22
21
20
19
18
17
13 14 15 16
1
28