Acer AT1921 Service Manual page 49

A
RN1 22R/8P4R
A_RA0 D_RA0
8 1
A_RA1 D_RA1
7 2
A_RA2 D_RA2
6 3
A_RA3 D_RA3
5 4
RN2 22R/8P4R
A_RA7 D_RA7
8 1
A_RA6 D_RA6
7 2
A_RA5 D_RA5
6 3
4 A_RA4 D_RA4
5 4
RN3 22R/8P4R
A_RA11 D_RA11
8 1
A_RA9 D_RA9
7 2
A_RA8 D_RA8
6 3
5 4
A_RA10 R54 22R/6 D_RA10
RN4 22R/8P4R
A_DQ0 D_DQ0
8 1
A_DQ1 D_DQ1
7 2
A_DQ2 D_DQ2
6 3
A_DQ3 D_DQ3
5 4
RN5 22R/8P4R
A_DQ4 D_DQ4
8 1
A_DQ5 D_DQ5
7 2
A_DQ6 D_DQ6
6 3
A_DQ7 D_DQ7
5 4
RN6 22R/8P4R
A_DQ8 D_DQ8
8 1
3
A_DQ9 D_DQ9
7 2
A_DQ10 D_DQ10
6 3
A_DQ11 D_DQ11
5 4
RN7 22R/8P4R
A_DQ12 D_DQ12
8 1
A_DQ13 D_DQ13
7 2
A_DQ14 D_DQ14
6 3
A_DQ15 D_DQ15
5 4
RN8 22R/8P4R
A_WE# D_WE#
8 1
A_CAS# D_CAS#
7 2
A_RAS# D_RAS#
6 3
A_CS# D_CS#
5 4
A_BA1 R55 22R/6 D_BA1
A_BA0 R56 22R/6 D_BA0
A_DQM0 R57 22R/6 D_DQM0
A_CKE R58 22R/6 D_CKE
A_CLK D_CLK
R59 22R/6
A_CLK# R365 22R/6 D_CLK#
2
D_CLK R364 150R/6 D_CLK#
A_DQS0 R366 47R/6 D_DQS0
A_DQS1 R367 47R/6 D_DQS1
D1V25 Close To RN#
CB114 CB115 CB116
0.1uF/6 0.1uF/6 0.1uF/6
DV25B
1
+ CE8 CB33 CB34 CB35
330uF/25V 0.1uF/6 0.1uF/6 0.1uF/6
0603 PUT ON NEARLY SDRAM
A
B
D1V25
RN13 75R/8P4R
D_RA0
8 1
D_RA1
7 2
D_RA2 F_A1
6 3
D_RA3 F_A2
5 4
F_A3
RN14 75R/8P4R F_A4
D_RA7 F_A5
8 1
D_RA6 F_A6
7 2
D_RA5 F_A7
6 3
D_RA4 F_A8
5 4
F_A9
RN15 75R/8P4R F_A10
D_RA11 F_A11
8 1
D_RA9 F_A12
7 2
D_RA8 F_A13
6 3
F_A14
5 4
F_A15
SB33B F_A16
D_RA10 R363 75R/6 F_A17
F_A18
RN16 75R/8P4R R53 F_A20
D_DQ0 F_A21
8 1
D_DQ1 IOCE#
7 2
D_DQ2 10k/6 F_OE#
6 3
D_DQ3 IOW R#
5 4
RN17 75R/8P4R
SB33B
D_DQ4
8 1
D_DQ5
7 2
D_DQ6
6 3
D_DQ7
5 4
RN18 75R/8P4R
Must use 8bit type flash
D_DQ8
8 1
D_DQ9
7 2
D_DQ10
6 3
D_DQ11
5 4
RN19 75R/8P4R
D_DQ12
8 1
D_DQ13
7 2
D_DQ14
6 3
D_DQ15
5 4
RN20 75R/8P4R
D_RAS#
8 1
D_CS#
7 2
D_BA0
6 3
D_BA1
5 4
D1V25
D_CAS# R358 75R/6
D_WE# R359 75R/6
D_DQS1 R360 75R/6
4 VREF
D_DQS0 R361 75R/6
D_DQM0 R362 75R/6
CB101
0.1uF/6
CB117 CB118
0.1uF/6 0.1uF/6
CB36 CB37 CB38 CB39
0.1uF/6 0.01uF/6 0.01uF/6 0.01uF/6
B
C
U11
F_D0
25 29
A0 D0
F_D1
24 31
A1 D1
F_D2
23 33
A2 D2
F_D3
22 35
A3 D3
F_D4
21 38
A4 D4
F_D5
20 40
A5 D5
F_D6
19 42
A6 D6
F_D7
18 44
A7 D7
8 30
A8 D8
7 32
A9 D9
6 34 SB33B SB33B
A10 D10
5 36
A11 D11
4 39
A12 D12
3 41
A13 D13
R51 R52
2 43
A14 D14
F_A0 0R/6
1 45
A15 D15
F_A19
48 16
A16 A18
10k/6
17 13
A17 NC
15 14
RY/BY WP/ACC
9 47
A19 BYTE
10
A20
FLASHVCC
26 37
CE VCC
28
OE
11 27
WE GND1
CB32
46
GND2
0.1uF/6
12
RESET
29LV160
TSOP 48 pin
R357 4.7k/6
U27
DV25B
1 8
GND VTT
2 7
SD PVIN
D1V25
3 6
VSENSE AVIN
V REF
4 5
VREF VDDQ
IC LP2996 DDR Termination SOP8 +
C233
10uF/25V
+ CE52
CB104 330uF/25V
0.1uF/6
D1V25
VREF
D1V25
CE54
+ CB103 C232 CB100 CB112 CB113
CB107
330uF/25V 0.1uF/6 3300pF/6 0.1uF/6 0.1uF/6 0.1uF/6 0.1uF/6
C
D
DV25B
U28
1 66
VDD VSS
D_DQ0 D_DQ15
2 65
DQ0 DQ15
3 64
VDDQ VSSQ
D_DQ1 D_DQ14
4 63
DQ1 DQ14
D_DQ2 D_DQ13
5 62
DQ2 DQ13
6 61
VSSQ VDDQ
D_DQ3 D_DQ12
7 60
DQ3 DQ12
D_DQ4 D_DQ11
8 59
DQ4 DQ11
9 58
VDDQ VSSQ
D_DQ5 D_DQ10
10 57
DQ5 DQ10
D_DQ6 D_DQ9
11 56
DQ6 DQ9
12 55
VSSQ VDDQ
D_DQ7 D_DQ8
13 54
DQ7 DQ8
14 53
NC NC
15 52
VDDQ VSSQ
D_DQS0 D_DQS1
16 51
LDQS UDQS
17 50
NC NC
V REF
18 49
VDD VREF
19 48
DNU VSS
D_DQM0 D_DQM0
20 47
LDM UDM
D_WE# D_CLK#
21 46
WE CK
D_CAS# D_CLK
22 45
CAS CK
D_RAS# D_CKE
23 44
RAS CKE
D_CS#
24 43
CS NC
25 42
NC A12
D_BA0 D_RA11
26 41
BA0 A11
D_BA1 D_RA9
27 40
BA1 A9
D_RA10 D_RA8
28 39
A10/AP A8
D_RA0 D_RA7
29 38
A0 A7
D_RA1 D_RA6
30 37
A1 A6
D_RA2 8M x 16 D_RA5
31 36
A2 A5
D_RA3 D_RA4
32 35
DDR
A3 A4
33 34
VDD VSS
M13L128168 8Mx16-5
R356 110R/6F R355 110/6F
VCC U29
3 2
VIN VOUT
1
ADJ/GND
AP1117ELA/TO252
+ C245
CE51
10uF/25V 0.1uF/6
DV25A
DV25A
CB106 VREF CB99 CB102
0.1uF/6 0.1uF/6 0.1uF/6
V REF
D
E
DV25B
F_D[0..7]
F_D[0..7] 4
IOCE# IOCE# 4
F_OE# F_OE# 4
IOW R# IOWR# 4
F_A[0..21] F_A[0..21] 4
A_RA[0..11] A_RA[0..11] 4
A_BA[0..1]
A_BA[0..1] 4
A_DQ[0..15] A_DQ[0..15] 4
A_DQM0 A_DQM0 4
A_CLK A_CLK 4
CB108
0.1uF/6
A_CKE A_CKE 4
A_CS# A_CS# 4
A_RAS# A_RAS# 4
A_CAS# A_CAS# 4
A_WE# A_WE# 4
A_CLK#
A_CLK# 4
A_DQS0
A_DQS0 4
A_DQS1
A_DQS1 4
L59 Bead_121_4A/8
DV25B
DV25A
CE50 DV25A
+
CB105 C244
10uF/25V 0.1uF/6 0.1uF/6
PROJECT :E9T-PV
Title
DDR & FLASH
Size Document Number R e v
Custom <Doc>
Date: Tuesday, May 29, 2007 Sheet 5 o f 14
E
4
3
2
1
C3B