Philips A02E Service Manual page 44

Circuit Diagrams and PWB Layouts
Small Signal Board: Control-Memory Interface (SDRAM)
1
CONTROL-MEMORY INTERFACE (SDRAM)
A
B
SA(0)
SA(1)
SA(2)
SA(3)
SA(4)
SA(5)
SA(6)
C
SA(7)
SA(8)
SA(9)
SA(10)
SA(11)
F730
D
E
F
3139 123 5536.2
1
A02E
2 3
7300-I
ADOC
B20 B26
SDRAM-A0 SDRAM SDRAM-D0
A20 C25
SDRAM-A1 SDRAM-D1
C19 C26
SDRAM-A2 SDRAM-D2
A19 A25
SDRAM-A3 SDRAM-D3
C18 C24
SDRAM-A4 SDRAM-D4
B18 B24
SDRAM-A5 SDRAM-D5
A18 A24
SDRAM-A6 SDRAM-D6
C17 C23
SDRAM-A7 SDRAM-D7
B17 B14
SDRAM-A8 SDRAM-D8
C11 C14
SDRAM-A9 SDRAM-D9
C20 A15
SDRAM-A10 SDRAM-D10
A12 B15
SDRAM-A11 SDRAM-D11
B12 C15
SDRAM-A12 SDRAM-D12
C16
SDRAM-D13
B21 A16
SDRAM-BS0 SDRAM-D14
A21 A17
SDRAM-BS1 SDRAM-D15
B23
SDRAM-LDQM
A14
SDRAM-UDQM
3737
C13 A13
SDRAM-CLK-IN SDRAM-CLK-OUT
33R
C12
SDRAM-CKE
C22
SDRAM-CASN
A22
SDRAM-RASN
A23
SDRAM-WEN
C21
SDRAM-CSN
2 3
7. 60
4 5
VDDE
2732 2731 2730
100n 100n 100n
SD(0)
7730
K4S641632D
SD(1)
SD(2)
20 BA0
SD(3)
BANK
21 BA1
SELECT
SD(4)
SD(5)
23 A0
SA(0)
SD(6)
24 A1
SA(1)
SD(7)
SA(2) 25 A2
SD(8)
SA(3) 26 A3
SD(9)
SA(4) 29 A4
SD(10)
SA(5) 30 A5
SD(11)
31 A6
SA(6)
SD(12)
32 A7
SA(7)
SD(13)
33 A8
SA(8)
SD(14)
34 A9
SA(9)
SD(15)
SA(10) 22 A10|AP
SA(11) 35 A11
LCKE
38 CLK
LRAS
37 CKE
19 CS_
LCBR
18 RAS_
LWE
17 CAS_
16 WE_
39 UDQM
15 LDQM
4 5
6 7
VDDE
5730 5731
100Mhz / 100Mhz /
220R
220R
2733 2734
100n 100n
1 14 27 3 9 43 49
VDD VDDQ
DQ0 2
DQ1 4
LWE
DATA INPUT DQ2 5
REGISTER
DQ3 7
LDQM
DQ4 8
DQ5 10
1M x 16
DQ6 11
1M x 16
DQ7 13
1M x 16
DQ8 42
1M x 16
DQ9 44
DQ10 45
COLUMN DQ11 47
DECODER
DQ12 48
LATENCY & DQ13 50
BURST LENGTH
DQ14 51
DQ15 53
PROGRAMMING
REGISTER
36
LWCBR NC
N.C.
NC|RFU 40
LQDM
VSS VSSQ
28 41 54 6 12 46 52
6 7
2730 B6
8
2731 B6
2732 B5
2733 B7
2734 B7
3737 E4
5730 A6
5731 A7
7300-I B2
7730 B6
A
F730 D2
B
SD(0)
SD(1)
SD(2)
C
SD(3)
SD(4)
SD(5)
SD(6)
SD(7)
SD(8)
SD(9)
D
SD(10)
SD(11)
SD(12)
SD(13)
SD(14)
SD(15)
E
F
CL 36532058_034.eps
030903
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