Pin Descriptions; Functional Block Diagram - Integra RDC-7.1 Service Manual

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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
TE
A3
26
L 13942296513
VDD
27

FUNCTIONAL BLOCK DIAGRAM

CLK
Clock
Generator
CKE
Address
CS
RAS
www
CAS
WE
.
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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
x
ao
u163
y
Burst
Counter
i
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2 9
8

PIN DESCRIPTIONS

Pin Name
CLK
CKE
CS
RAS
CAS
WE
DQ0 ~ DQ15
Pin Name
DQM
A0-11
BA0,1
V
DD
V
DDQ
V
SS
Q Q
V
3
6 7
1 3
SSQ
Bank C
Bank B
Bank A
Sense Amplifier
Column Decoder &
Latch Circuit
&
co
Data Control Circuit
.
9 4
2 8
Function
Master Clock
Clock Enable
Chip Select
Row Address Strobe
Column Address Strobe
Write Enable
Data I/O
Function
DQ Mask Enable
Address Input
Bank Address
Power Supply
Power Supply for DQ
Ground
Ground for DQ
1 5
0 5
8
2 9
9 4
Bank D
m
TX-NR1000
9 9
2 8
9 9
DQM
DQ

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