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Onkyo TX-NR1000E Service Manual page 110

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IC BLOCK DIAGRAM AND DESCRIPTION
IC42S16800-7T(2Mx8 bitsx4 banks Synchronus Dynamic RAM)
PIN CONFIGURATIONS
54-Pin TSOP-2 (IC42S16800)
VDD
1
DQ0
2
VDDQ
3
DQ1
4
DQ2
5
VSSQ
6
DQ3
7
DQ4
8
VDDQ
9
DQ5
10
DQ6
11
VSSQ
12
DQ7
13
VDD
14
LDQM
15
WE
16
CAS
17
RAS
18
CS
19
BA0
20
BA1
21
A10
22
A0
23
A1
24
A2
25
A3
26
VDD
27
FUNCTIONAL BLOCK DIAGRAM
CLK
Clock
Generator
CKE
Address
CS
RAS
CAS
WE
54
VSS
53
DQ15
52
VSSQ
51
DQ14
50
DQ13
49
VDDQ
48
DQ12
47
DQ11
46
VSSQ
45
DQ10
44
DQ9
43
VDDQ
42
DQ8
41
VSS
40
NC
39
UDQM
38
CLK
37
CKE
36
NC
35
A11
34
A9
33
A8
32
A7
31
A6
30
A5
29
A4
28
VSS
Row
Address
Buffer
&
Mode
Refresh
Register
Counter
Column
Address
Buffer
&
Burst
Counter
PIN DESCRIPTIONS
Pin Name
Function
CLK
Master Clock
CKE
Clock Enable
CS
Chip Select
RAS
Row Address Strobe
CAS
Column Address Strobe
WE
Write Enable
DQ0 ~ DQ15
Data I/O
Pin Name
Function
DQM
DQ Mask Enable
A0-11
Address Input
BA0,1
Bank Address
V
Power Supply
DD
V
Power Supply for DQ
DDQ
V
Ground
SS
V
Ground for DQ
SSQ
Bank D
Bank C
Bank B
Bank A
Sense Amplifier
Column Decoder &
Latch Circuit
Data Control Circuit
TX-NR1000
DQM
DQ

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