Philips MCD170 Service Manual page 21

CIRCUIT DIAGRAM - DVD BOARD
MPEG is not repaired,diagram for referrence only.
U4
M_A0
21
A0
M_A1
22
A1
M_A2
23
A2
M_A3
24
A3
M_A4
27
A4
M_A5
28
A5
M_A6
29
A6
M_A7
30
A7
M _ A 8
31
A8
M_A9
32
A9
M_A10
20
A10
M_BA0
19
BA/A11
RAM_CLK
35
CLK
34
SD_VCC3
CKE
18
GND
CS
M_RAS
17
RAS
M_CAS
16
CAS
M_WE
15
WE
M_DQM0
14
DQML
M_DQM1
36
DQMH
33
NC
37
NC
26
VSS
50
VSS
GND
SDRAM16M-6(512Kx16x2)
U6
SPI_CE
1
CE_B VDD
DQ0
2
DQ0 HOLD#
SPI_WP
3
WP# SCK
4
GND
GND DQ1
SPI FLASH-SOP8
SPI_D0 R48
SPI_D1 R49
R50
SPI_VCC3
R51
8 - 2
M_D0
2
DQ0
M_D1
3
DQ1
M_D2
5
DQ2
M_D3
6
DQ3
M_D4
8
DQ4
M_D5
9
DQ5
M_D6
11
DQ6
M_D7
12
DQ7
M _ D 8
39
DQ8
M_D9
40
DQ9
M_D10
42
DQ10
M_D11
43
DQ11
M_D12
45
DQ12
M_D13
46
DQ13
M_D14
48
DQ14
M_D15
49
DQ15
GND
1
SD_VCC3
VCC
25
SD_VCC3
VCC
7
VCCQ
13
VCCQ
38
VCCQ
44
VCCQ
4
VSSQ
10
VSSQ
41
VSSQ
47
VSSQ
GND
8
SPI_VCC3
SPI_HOLD
7
SPI_CLK
6
DQ1
5
GND
SPI Mode Setting
2bit 1bit
0 DQ0
0 DQ1
R49 NC
10K SPI_WP
10K SPI_HOLD
0
R51
U5
M_A0
23
A0
M_A1
24
A1
M_A2
25
A2
M_A3
26
A3
M_A4
29
A4
M_A5
30
A5
M_A6
31
A6
M_A7
32
A7
M_A8
33
A8
M_A9
34
A9
M_A10
22
A10/AP
M_A11
35
A11
M_DQM0
15
LDQM
M_DQM1
39
UDQM
M_WE
16
WE
M_CAS
17
CAS
M_RAS
18
RAS
19
CS NC/RFU
37
CKE
RAM_CLK
38
CLK
M_BA0
20
BA0
M_BA1
21
BA1 VDD
VDD
VDD
6
VSSq VDDq
12
VSSq VDDq
46
VSSq VDDq
52
VSSq VDDq
SDRAM1Mx16x4
GND
U7
SPI_CE
1 8
CE# VDD
DQ0 SPI_HOLD
2 7
DOUT HOLD#
SPI_WP SPI_CLK
3 6
WP# SCK
DQ1
4 5
GND DIN
ST SPI FLASH
DQ0 R47 NC DQ1
For 1bit SPI Flash
SPI_VCC3
BC35
0.1uF
0
NC
GND
8 - 2
M_D0
2
D0
M_D1
4
D1
M_D2
5
D2
M_D3
7
D3
M_D4
8
D4
M_D5
10
D5
M_D6
11
D6
M_D7
13
D7
M_D8 M_CLK R46
42
D8
M_D9
44
D9
M_D10 C14
45
GND
D10
M_D11
47
D11
M_D12
48
D12
M_D13
50
D13
M_D14
51
D14
M_D15
53
D15
36
NC
40
SD_VCC3
28
GND
VSS
41
VSS
54
VSS
1
SD_VCC3
EC17
14
27
10uF/16V
3
9
43
49
GND
M_A11
SPI_VCC3
M_CAS
M_RAS
M_WE
M_BA0
M_BA1
SPI_CE
SPI_CLK
M_CLK
33 RAM_CLK
10pF
BC31 BC32 BC33 BC34
0.1uF 0.1uF 0.1uF 0.1uF
M_A[0..10] 3
M_D[0..15] 3
M_DQM[0..1] 3
M_A11 3
M_CAS 3
M_RAS 3
M_WE 3
M_BA0 3
M_BA1 3
SPI_D[0..1] 3
SPI_CE 3
SPI_CLK 3
M_CLK 3