Acer AT2002, Service Manual

Page: 73 / 85

5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
ROM_WEN
ROM_CSN
ROM_OEN
ROM_SCLK ROM_SCLK
WP#
HOLD#
SCSN
ROM_SDI
ROM_SDO ROM_SDO
OCMDATA[0..7]
WP# HOLD#
OCMADDR15
OCMADDR9
OCMADDR0
ROM_CSN
OCMADDR16
OCMADDR14
OCMADDR17
OCMADDR11
OCMDATA1
OCMDATA7
OCMADDR6
OCMADDR13
OCMADDR8
OCMADDR10
OCMDATA6
OCMADDR12
OCMDATA5
OCMDATA2
OCMADDR7
OCMADDR1
OCMDATA0
ROM_OEN
OCMADDR2
ROM_WEN
OCMDATA4
OCMADDR3
OCMADDR18
OCMDATA3
OCMADDR5
OCMADDR4
OCMADDR[0..18]
+3.3V_I/O
GND
GND
GND
Flash_Power
+3.3V_I/O
GND GND
+3.3V_I/O
+3.3V_COM
+3.3V_COM
Flash_Power
+5V_IN
Flash_Power
GND
OCMDATA[0..7] 3
OCMADDR[0..18] 3
ROM_WEN 3
ROM_OEN 3
ROM_CSN 3
SCSN 3
ROM_SDI 3
ROM_SDO 3
ROM_SCLK 3
CSRAM 3
Title
Size Document Number R ev
Date: Sheet o f
HUDSON PLATFORM
FLASH MEMORY I/F
4 8 Monday, June 26, 2006
B3C
SCHEMATIC1
* CSRAM ADDR RANGES FROM 18000H TO 7FFFFH (APP. 412K BYTE)
SERIAL FLASH 512K
SOIC-8
OPTIONAL
#Optional
Socket for a X8 Flash (64/128/256/512K) and
PROMJETmemory Emulator
AT2002 ,20" TV
C101
0.1uF/6
L2
NC/Bead_121_4A/8
U1F
74LCX14MX
13 12
14
7
C100
0.1uF/6
C99
22uF/25V
R150
NC/ 10K/6F
R147
10K/6
C102
SC220pF
C103
0.1uF/6
R145
NC/ 0R
R148
10K/6
R146
NC/ 0R
U7
Am29LV040B
A28F001
A15
3
A14
29
A13
28
A12
4
A11
25
A10
23
A9
26
A8
27
A7
5
A6
6
A5
7
A4
8
A3
9
A2
10
A1
11
A0
12
DQ7
21
DQ6
20
DQ5
19
DQ4
18
DQ3
17
DQ2
15
DQ1
14
DQ0
13
CE#
22
OE#
24
WE#
31
VCC
32
A18
1
VSS
16
A17
30
A16
2
U1E
74LCX14MX
11 10
14
7
U8
NC/SST25VF040
CE#
1
SO
2
WP#
3
VSS
4
SI
5
SCK
6
HOLD#
7
VCC
8
L1
Bead_121_4A/8
R144
NC/ 10K/6
R149
NC/ 10K/6F