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Chapter 3
Hardware
32
Reference Manual
LittleBoard 700
Pin #
Signal
Descriptions (J1 Row C)
5 (C4)
LA21
Address bit 21
6 (C5)
LA20
Address bit 20
7 (C6)
LA19
Address bit 19
8 (C7)
LA18
Address bit 18
9 (C8)
LA17
Address bit 17
10 (C9)
MEMR*
Memory Read
11 (C10)
MEMW*
Memory Write
12 (C11)
SD8
Data Bit 8
13 (C12)
SD9
Data Bit 9
14 (C13)
SD10
Data Bit 10
15 (C14)
SD11
Data Bit 11
16 (C15)
SD12
Data Bit 12
17 (C16)
SD13
Data Bit 13
18 (C17)
SD14
Data Bit 14
19 (C18)
SD15
Data Bit 15
20 (C19)
GND
Key Pin
Notes:
The shaded area denotes power or ground. The signals marked with * = Negative true logic.
Table 3-8. PC/104 Interface Pin/Signal Descriptions (J1D)
Pin #
Signal
Descriptions (J1 Row D)
21 (D0)
GND
Ground
22 (D1)
MEMCS16*
16-bit Memory Access
23 (D2)
IOCS16*
16-bit I/O Access
24 (D3)
IRQ10
Interrupt Request 10
25 (D4)
IRQ11
Interrupt Request 11
26 (D5)
IRQ12
Interrupt Request 12
27 (D6)
IRQ15
Interrupt Request 15
28 (D7)
IRQ14
Interrupt Request 14
29 (D8)
DACK0*
DMA Acknowledge 0
30 (D9)
DRQ0
DMA Request 0
31 (D10)
DACK5*
DMA Acknowledge 5
32 (D11)
DRQ5
DMA Request 5
33 (D12)
DACK6*
DMA Acknowledge 6
34 (D13)
DRQ6
DMA Request 6
35 (D14)
DACK7*
DMA Acknowledge 7
36 (D15)
DRQ7
DMA Request 7
37 (D16)
+5V
+5V Power
38 (D17)
MASTER*
Bus Master Assert
39 (D18)
GND
Ground
40 (D19)
GND
Ground
Notes:
The shaded area denotes power or ground. The signals marked with * = Negative true logic.
Summary of Contents for Little Board 700
Page 1: ...Little Board 700 Single Board Computer Reference Manual P N 5001670A Revision D...
Page 6: ...Contents vi Reference Manual LittleBoard 700...
Page 10: ...Chapter 1 About This Manual 4 Reference Manual LittleBoard 700...
Page 26: ...Chapter 2 Product Overview 20 Reference Manual LittleBoard 700...
Page 82: ...Chapter 4 BIOS Setup 76 Reference Manual LittleBoard 700...
Page 84: ...Appendix A Technical Support 78 Reference Manual LittleBoard 700...
Page 86: ...Appendix B Connector Part Numbers 80 Reference Manual LittleBoard 700...
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