ViewSonic N4261w-1M Service Manual page 43

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9.10 PW328 DDR MEMORY
MMD[31:0]
MMD0
MD0
H23
MMD1
MD1
F26
MMD2
MD2
G25
MMD3
MD3
H24
MMD4
MD4
H25
MMD5
MD5
J24
MMD6
MD6
H26
MMD7
MD7
K23
MMD8
MD8
J25
MMD9
MD9
K24
MMD10
MD10
J26
MMD11
MD11
K25
MMD12
MD12
L24
MMD13
MD13
L25
MMD14
MD14
N22
MMD15
MD15
M24
MMD16
MD16
V22
MMD17
MD17
V23
MMD18
MD18
Y26
MMD19
MD19
W24
MMD20
MD20
W23
MMD21
MD21
Y24
MMD22
MD22
AB26
MMD23
MD23
Y23
MMD24
MD24
AA24
MMD25
MD25
AB25
MMD26
MD26
AC26
MMD27
MD27
AA23
MMD28
MD28
AC24
MMD29
MD29
AB23
MMD30
MD30
AD25
MMD31
MD31
AE25
MDQS0
1
Small
TP16
RMDQS0
1
Small
TP17
MD0
1
Small
TP18
MMD0
1
Small
TP19
MD31
Small
1
TP20
MMD31
Small
1
TP21
RMA0
Small
1
TP22
RMCK0
Small
1
TP23
RMCK0n
Small
1
TP24
RMCASn
1
Small
TP25
LAYOUT: Place capacitors as
close as possible to chip
C199
C200
C201
C202
C203
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
LAYOUT: Place capacitors as
close as possible to chip
C209
C210
C211
C212
C213
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
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R347
22
R348
22
L26
MD0
MREFIN0
R349
22
V25
MD1
MREFIN1
R350
22
MD2
MD3
MCK
R162
22
T26
MD4
MCK
MCKn
R163
22
T25
MD5
MCK
MCKFBK
R23
MD6
MCKFBK
MCKFBKn
T22
MD7
MCKFBK
MCKE
M26
MD8
MCKE
MD9
MWEn
N23
MD10
MWE
MCASn
N24
KD11
MCAS
MRASn
N25
MD12
MRAS
MCSn
R24
MD13
MCS
U18G
MD14
MDQS0
L22
MD15
MDQS0
MDM0
G26
MD16
MDM0
MDQS1
M22
MD17
MDQS1
MDM1
K26
MD18
MDM1
MD19
MD20
MA0
R25
MD21
MA0
MA1
N26
MD22
MA1
MA2
V26
MD23
MA2
MA3
P22
MD24
MA3
MA4
U24
MD25
MA4
MA5
P23
MD26
MA5
MA6
U25
MD27
MA6
MA7
P24
MD28
MA7
MA8
U22
MD29
MA8
MA9
P25
MD30
MA9
MA10
T23
MD31
MA10
MA11
R26
MA11
MA12
T24
MA12
MBNK0
Main
V24
MBNK0
MBNK1
W26
Memory
MBNK1
Port
MDM3
AB24
MDM3
MDQS3
AC25
MDQS3
MDM2
Y25
MDM2
MDQS2
AA26
MDQS2
IC, PW106
V25
R164
1K
MVREF
R165
C195
C196
1K
0.1uF
0.1uF
V25_PW106DDR1
V25
L60
PBY20-221
C207
C208
C204
C205
C206
.1
100U
0.1uF
0.1uF
0.1uF
V25_PW106DDR2
V25
L61
PBY20-221
C217
C218
C214
C215
C216
.1
100U
0.1uF
0.1uF
0.1uF
40
Confidential - Do Not Copy
RMCK0
RMCK1
RMCK0n
RMCK1n
49
45
46
RMCKE
44
RMRASn
23
RMCASn
22
RMWEn
21
RMCSn
24
RMDM1
20
RMDM0
47
RMDQS1
16
RMDQS0
51
RMA0
29
RMA0
RMA1
30
RMA1
RMA2
31
RMA2
RMA3
32
RMA3
RMA4
35
RMA4
RMA5
36
RMA5
RMA6
37
RMA6
RMA7
38
RMA7
RMA8
39
RMA8
RMA9
40
RMA9
RMA10
28
RMA10
RMA11
41
RMA11
RMA12
42
RMA12
RMBK0
26
RMBK1
27
49
C197
C198
45
0.1uF
0.1uF
46
44
23
22
21
24
RMDM3
20
RMDM2
47
RMDQS3
16
RMDQS2
51
RMA0
29
RMA1
30
RMA2
31
RMA3
32
RMA4
35
RMA5
36
RMA6
37
RMA7
38
RMA8
39
RMA9
40
RMA10
28
RMA11
41
RMA12
42
26
27
N4261w-1M
V25_PW106DDR1
U21
1
VDD1
18
VDD2
33
VREF
VDD3
3
VDDQ1
9
VDDQ2
15
CK
VDDQ3
55
CK
VDDQ4
61
CKE
VDDQ5
MMD8
2
RAS
DQ0
MMD9
4
CAS
DQ1
MMD10
5
WE
DQ2
MMD11
7
CS
DQ3
MMD12
8
DQ4
MMD13
10
LDM
DQ5
MMD14
11
UDM
DQ6
MMD15
13
LDQS
DQ7
MMD0
54
UDQS
DQ8
MMD1
56
DQ9
MMD2
57
A0
DQ10
MMD3
59
A1
DQ11
MMD4
60
A2
DQ12
MMD5
62
A3
DQ13
MMD6
63
A4
DQ14
MMD7
65
A5
DQ15
A6
A7
34
A8
VSS1
48
A9
VSS2
66
A10/AP
VSS3
6
A11
VSSQ1
12
A12
VSSQ2
52
VSSQ3
58
BA0
VSSQ4
64
BA1
VSSQ5
DDR400_SDRAM_256M
HY5DU281622ET-SSOP66
V25_PW106DDR2
U22
1
VDD1
18
VDD2
33
VREF
VDD3
3
VDDQ1
9
VDDQ2
15
CK
VDDQ3
55
CK
VDDQ4
61
CKE
VDDQ5
MMD24
2
RAS
DQ0
MMD25
4
CAS
DQ1
MMD26
5
WE
DQ2
MMD27
7
CS
DQ3
MMD28
8
DQ4
MMD29
10
LDM
DQ5
MMD30
11
UDM
DQ6
MMD31
13
LDQS
DQ7
MMD16
54
UDQS
DQ8
MMD17
56
DQ9
MMD18
57
A0
DQ10
MMD19
59
A1
DQ11
MMD20
60
A2
DQ12
MMD21
62
A3
DQ13
MMD22
63
A4
DQ14
MMD23
65
A5
DQ15
A6
A7
34
A8
VSS1
48
A9
VSS2
66
A10/AP
VSS3
6
A11
VSSQ1
12
A12
VSSQ2
52
VSSQ3
58
BA0
VSSQ4
64
BA1
VSSQ5
DDR400_SDRAM_256M
HY5DU281622ET-SSOP66
MMD0
RP15
MD0
8
1
MMD1
22
MD1
7
2
MMD2
MD2
6
3
MMD3
MD3
5
4
MMD4
RP16
MD4
8
1
MMD5
22
MD5
7
2
MMD6
MD6
6
3
MMD7
MD7
5
4
RMDM0
RP17
MDM0
5
4
RMDQS0
22
MDQS0
6
3
RMDM1
MDM1
7
2
RMDQS1
MDQS1
8
1
MMD12
RP18
MD12
5
4
MMD13
22
MD13
6
3
MMD14
MD14
7
2
MMD15
MD15
8
1
MMD8
RP19
MD8
5
4
MMD9
22
MD9
6
3
MMD10
MD10
7
2
MMD11
MD11
8
1
RMCSn
RP20
MCSn
5
4
RMRASn
22
MRASn
6
3
RMCASn
MCASn
7
2
RMWEn
MWEn
8
1
RMA8
RP21
MA8
5
4
RMA9
22
MA9
6
3
RMA10
MA10
7
2
RMA11
MA11
8
1
RMBK1
RP22
MBNK1
5
4
RMBK0
22
MBNK0
6
3
RMCKE
MCKE
7
2
RMA12
MA12
8
1
RMA3
RP23
MA3
5
4
RMA2
22
MA2
6
3
RMA1
MA1
7
2
RMA0
MA0
8
1
RMA4
RP24
MA4
5
4
RMA5
22
MA5
6
3
RMA6
MA6
7
2
RMA7
MA7
8
1
MMD16
RP25
MD16
5
4
MMD17
22
MD17
6
3
MMD18
MD18
7
2
MMD19
MD19
8
1
MMD20
RP26
MD20
5
4
MMD21
22
MD21
6
3
MMD22
MD22
7
2
MMD23
MD23
8
1
RMDM2
RP27
MDM2
5
4
RMDQS2
22
MDQS2
6
3
RMDM3
MDM3
7
2
RMDQS3
MDQS3
8
1
MMD28
RP28
MD28
8
1
MMD29
22
MD29
7
2
MMD30
MD30
6
3
MMD31
MD31
5
4
MMD24
RP29
MD24
8
1
MMD25
22
MD25
7
2
MMD26
MD26
6
3
MMD27
MD27
5
4

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