Ssb: Sdram - Philips LC4.9E Service Manual

Circuit Diagrams and PWB Layouts

SSB: SDRAM

1 2
SDRAM
B10
+2V5_DDR
A
2B01 2B02 2B03 2B04 2B05 2B06
47u 47u 100n 100n 100n 100n
16V
6.3V
TO/FROM SCALER
B
FSVREF
FSRAS
FSCAS
FSWE
C
IB03
FSCLK+
IB02
FSCLK-
FSCKE
FSDQM(0)
FSDQM(1)
FSDQM(2)
FSDQM(3)
FSBKSEL(0)
FSBKSEL(1)
FSADDR(0)
D FSADDR(1)
FSADDR(2)
FSADDR(3)
FSADDR(4)
FSADDR(5)
FSADDR(6)
FSADDR(7)
FSADDR(8)
FSADDR(9)
FSADDR(10)
FSADDR(11)
E
F
G
3139 123 6141.1
1 2
LC4.9E AA
3 4
2B07 2B08 2B09 2B10 2B11 2B12 2B13 2B14 2B15
100n 100n 100n 100n 100n 100n 100n 100n 100n
+2V5_DDR
2B18
3B01
10K
1% 16V 22u
2B17
FB01
+2V5_DDR
100n
3B02
10K
1%
7B01
K4D263238F-UC50
Φ
VREF
VDD VDDQ
28
CS
SDRAM
27
RAS
26 1M X 32 X 4 NC
CAS
25
WE
3B03 150R 1%
55
CK
54
CK 0
53
CKE 1
2
23
0 3
56
1 4
DM
24
2 5
57
3 6
D
7
29
0 8
30 BA
1 9
10
31
0 11
32
1 12
33
2 13
34
3 14
47
4 15
48
5 16
A
49
6 17
50
7 18
51
8 19
45
9 20
36
10 21
37
11 22
D 23
38
24
39
25
40
26
NC
41
27
42
28
43
29
30
93
RFU 31
52
MCL
DQS
VSS VSSQ
3 4
7. 85
5 6 7
2B16
100n
44
87
88
89
90
91
97
98
100
1
3
4
6
7
60
61
63
64
68
69
71
72
9
10
12
13
17
18
20
21
74
75
77
78
80
81
83
84
94
5 6 7
8 9
2B01 A1
2B02 A1
B10
2B03 A1
2B04 A2
2B05 A2
2B06 A2
2B07 A2
2B08 A3
A 2B09 A3
2B10 A3
2B11 A4
2B12 A4
2B13 A4
2B14 A4
2B15 A5
TO/FROM SCALER
2B16 A5
2B17 B4
2B18 B4
FSDATA(0) 3B01 B3
3B02 B3
FSDATA(1) B
3B03 C2
7B01 B3
FSDATA(2)
FB01 B3
FSDATA(3) IB02 C2
IB03 C2
FSDATA(4)
FSDATA(5)
FSDATA(6)
FSDATA(7)
C
FSDATA(8)
FSDATA(9)
FSDATA(10)
FSDATA(11)
FSDATA(12)
FSDATA(13)
D
FSDATA(14)
FSDATA(15)
FSDATA(16)
FSDATA(17)
FSDATA(18)
FSDATA(19)
E
FSDATA(20)
FSDATA(21)
FSDATA(22)
FSDATA(23)
FSDATA(24)
FSDATA(25)
FSDATA(26) F
FSDATA(27)
FSDATA(28)
FSDATA(29)
FSDATA(30)
FSDATA(31)
G
G_15351_010.eps
080906
8 9