Onkyo TX-NR901 Service Manual page 81

IC BLOCK DIAGRAMS AND DESCRIPTIONS
Q705,Q706 CY7C1019BV/CV33-15VCT(128KX8 static RAM)
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
CE
WE
OE
Q603,Q608 HM5264165FTT-B6(SDRAM)
Top View
1
Vcc
54
DQ0 2
53
3
VccQ
52
4
DQ1 51
5
DQ2
50
6
VssQ 49
DQ3 7
48
8
DQ4
47
VccQ 9
46
10
DQ5
45
11
DQ6 44
12
VssQ
43
13
DQ7 42
14
Vcc
41
15
DQML
40
WE 16
39
17
CAS
38
18
RAS 37
19
CS
36
20
A13 35
21
A12
34
22
A10
33
A0 23
32
24
A1
31
25
A2 30
26
A3
29
27
Vcc 28
INPUT BUFFER
512X256X8
ARRAY
POWER
COLUMN
DOWN
DECODER
Vss
DQ15
Pin Name
VssQ
DQ14
DQ13
A0~A13
VccQ
DQ12
DQ11
DQ0~DQ15
VssQ
CS
DQ10
DQ9
RAS
VccQ
CAS
DQ8
WE
Vss
DQMU/DQML Input/output mask
NC
DQML
CLK
CLK
CKE
CKE
Vcc
NC
Vss
A11
A9
VccQ
A8
VssQ
A7
NC
A6
A5
A4
Vss
I/O
0
I/O
1
I/O
2
I/O
3
I/O
4
I/O
5
I/O
6
I/O
7
Function
Address input
Row address A8 to A11
Column address A0 to A7
Bank select address A12/A13(BS)
Data input/output
Chip select
Row address strobe command
Column address strobe command
Write enable
Clock input
Clock enable
Power for internal circuit
Ground for internal circuit
Power for DQ circuit
Ground for DQ circuit
No connection
TX-NR901
Top View
1 A16
32
A0
2 A15
31
A1
3 A14
30
A2
4 A13
29
A3
5 OE
28
CE
6 I/O7
27
I/O0
7 I/O6
26
I/O1
8 Vss
25
Vcc
9 Vcc
24
Vss
10 I/O5
23
I/O2
11 I/O4
22
I/O3
12 A12
21
WE
13 A11
20
A4
14 A10
19
A5
15 A9
18
A6
16 A8
17
A7