Philips LC4.7E Service Manual page 30

Circuit Diagrams and PWB Layouts
Small Signal Board: SDRAM
1 2
SDRAM
A
+2V5_DDR
2501 2502
2503 2504 2505 2506
47u 47u 100n 100n 100n 100n
B
A7 FSCLK+
A7 FSCLK-
C
A7 FSRAS
A7 FSCAS
A7 FSWE
A7 FSCLK+
A7 FSCLK-
A7 FSCKE
A7 FSDQM0
A7 FSDQM1
A7 FSDQM2
A7 FSDQM3
D
A7 FSBKSEL0
A7 FSBKSEL1
A7 FSADDR0
A7 FSADDR1
A7 FSADDR2
A7 FSADDR3
A7 FSADDR4
A7 FSADDR5
A7 FSADDR6
A7 FSADDR7
A7 FSADDR8
A7 FSADDR9
E
A7 FSADDR10
A7 FSADDR11
F
G
3139 123 5837.1
1 2
LC4.7E AA 7.
3 4
2507 2508 2509 2510 2511 2512 2513 2514
100n 100n 100n 100n 100n 100n 100n 100n
+2V5_DDR
FSVREF
2526
3501
10K
I503
1% 16V 22u
2517
FSVREF
F501
+2V5_DDR
3503
100n
150R
1%
3502
10K
I502 1%
7501
K4D263238M-QC50
Φ
VREF
VDD VDDQ
28
CS
SDRAM
27
RAS
26 1M X 32 X 4
CAS
25
WE
55
CK
54
CK
53
CKE
23
0
56
1
DM
24
2
57
3
D
29
0
30 BA
1
31
0
32
1
33
2
34
3
47
4
48
5
A
49
6
50
7
51
8
45
9
36
10
37
11
D
38
39
40
41 NC
42
43
93
RFU
52
MCL
VSS VSSQ
3 4
30
5 6
2515
2516
100n 100n
44
87
88
NC
89
90
91
97
0
98
1
100
2
1
3
3
4
4
5
6
6
7
7
60
8
61
9
63
10
64
11
68
12
69
13
71
14
72
15
9
16
10
17
12
18
13
19
17
20
18
21
20
22
21
23
74
24
75
25
77
26
78
27
80
28
81
29
83
30
84
31
94
DQS
5 6
7 8
A
TO/FROM SCALER
B
FSDATA0 A7
FSDATA1 A7
FSDATA2 A7
FSDATA3 A7
FSDATA4 A7
C
FSDATA5 A7
FSDATA6 A7
FSDATA7 A7
FSDATA8 A7
FSDATA9 A7
FSDATA10 A7
FSDATA11 A7
D
FSDATA12 A7
FSDATA13 A7
FSDATA14 A7
FSDATA15 A7
FSDATA16 A7
FSDATA17 A7
E
FSDATA18 A7
FSDATA19 A7
FSDATA20 A7
FSDATA21 A7
FSDATA22 A7
FSDATA23 A7
F
FSDATA24 A7
FSDATA25 A7
FSDATA26 A7
FSDATA27 A7
FSDATA28 A7
FSDATA29 A7
G
FSDATA30 A7
FSDATA31 A7
E_14710_024.eps
130504
7 8
2501 B1
2502 B1
2503 B1
2504 B1
2505 B2
2506 B2
2507 B2
2508 B3
2509 B3
2510 B3
2511 B3
2512 B4
2513 B4
2514 B4
2515 B5
2516 B5
2517 B4
2526 B4
3501 B3
3502 C3
3503 C2
7501 C3
F501 C3
I502 C2
I503 B2