Acer AL2021 Руководство по эксплуатации - Страница 45

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Acer AL2021 Руководство по эксплуатации
+3.3V_DIG
R40
R43
R67
/OCM_WE
4
/OCM_WE
/OCM_RE
4
/OCM_RE
/OCM_CS
4
/ROM_CS
4
OCMADDR[0..19]
OCMDATA[0..7]
4
OCMDATA[0..7]
+3.3V_DIG
10K/6
10K/6
10K/6
GND
OCMADDR[0..19]
+3.3V_DIG
R68
10K/6
R69
10K/6
R70
10K/6
R62
10K/6
R55
10K/6
R47
10K/6
R50
10K/6
OCMADDR8
OCMADDR9
OCMADDR13
OCMADDR14
OCMADDR15
OCMADDR16
INT_OSC
OCMADDR18
8-BIT_FLASH2
OCMADDR17
8-BIT_FLASH1
R65
10K/6
OCMADDR19
8-BIT_FLASH3
R80
10K/6
OCMADDR10
TCLK
R41
10K/6
OCMADDR11
OUTPUTS_ZERO
R46
10K/6
OCMADDR12
OUTPUTS_ZERO
R71
10K/6
Socket for a X8 Flash (64/128/256/512K) and
PROMJETmemory Emulator
XU1
OCMADDR18
1
A18
OCMADDR17
30
A17
OCMADDR16
2
A16
OCMADDR15
3
A15
OCMADDR14
29
A14
OCMADDR13
28
A13
OCMADDR12
4
A12
OCMADDR11
25
A11
OCMADDR10
23
A10
OCMADDR9
26
A9
OCMADDR8
27
A8
OCMADDR7
5
A7
OCMADDR6
6
A6
OCMADDR5
7
A5
OCMADDR4
8
A4
OCMADDR3
9
A3
OCMADDR2
10
A2
OCMADDR1
11
A1
OCMADDR0
12
A0
A28F001
29LV040B
Firmware_Bypass
R56
10K/6
DDC2BI
R51
10K/6
Serial_Interface_Debug1
R61
10K/6
Serial_Interface_Debug2
R64
10K/6
Serial_Interface_Debug3
R73
10K/6
GND
GND
- 45 -
21
OCMDATA7
DQ7
20
OCMDATA6
DQ6
19
OCMDATA5
DQ5
OCMDATA4
18
DQ4
OCMDATA3
17
DQ3
OCMDATA2
15
DQ2
OCMDATA1
14
DQ1
OCMDATA0
13
DQ0
/ROM_CS
22
CE#
/OCM_RE
24
OE#
31
/OCM_WE
WE#
+3.3V_DIG
32
VCC
16
VSS
GND
10: LOW (Use TCLK)
11: LOW (set all display output to '0')
12: LOW
13: LOW(disable serial interface debug)
14: LOW
15: LOW
16: HIGH (use crystal)
17: LOW (8bit bus with OCM access external ROM)
18: HIGH
19: LOW
PROJECT : L0T
Quanta Computer Inc.
Title

06. Memory I/F

Size
Document Number
06. Memory I/F
Date:
Friday, July 11, 2003
Rev
1A
L0T
Sheet
6
of
8