Functional Description
CP6000
Page 2 - 20
© 2005 Kontron Modular Computers GmbH
ID 27942, Rev. 05
2794
2.05.UG.VC.051020/17275
8
P R E L I M I N A R Y
2.3.8.2
J20 - ATA 40-Pin Connector
The following table sets out the pinout of the J20 connector, giving the corresponding signal
names. The maximum length of cable the that may be used is 35 cm.
2.3.8.3
CompactFlash Socket
To enable flexible flash extension, a CompactFlash (CF) type II socket, J17, is available.
CF is a very small removable mass storage device. It provides true IDE functionality compatible
with the 16-bit ATA/ATAPI-4 interface. CF cards are also available for data storage using the
Microdrive hard disk from IBM with up to 6 GB capacity.
The CompactFlash socket is connected to the primary EIDE port and can be set to master or
slave.
The board supports DMA and both CF types (type I and type II). CompactFlash is available in
both CF type I and CF type II cards. The IBM Microdrive is a CF type II card.
Table 2-16: Pinout of ATA 40-Pin Connector J20
I/O
FUNCTION
SIGNAL
PIN
PIN
SIGNAL
FUNCTION
I/O
O
Reset HD
IDERESET
1
2
GND
Ground signal
--
I/O
HD data 7
HD7
3
4
HD8
HD data 8
I/O
I/O
HD data 6
HD6
5
6
HD9
HD data 9
I/O
I/O
HD data 5
HD5
7
8
HD10
HD data 10
I/O
I/O
HD data 4
HD4
9
10
HD11
HD data 11
I/O
I/O
HD data 3
HD3
11
12
HD12
HD data 12
I/O
I/O
HD data 2
HD2
13
14
HD13
HD data 13
I/O
I/O
HD data 1
HD1
15
16
HD14
HD data 14
I/O
I/O
HD data 0
HD0
17
18
HD15
HD data 15
I/O
--
Ground signal
GND
19
20
N/C
--
--
I
DMA request
IDEDRQ
21
22
GND
Ground signal
--
O
I/O write
IOW
23
24
GND
Ground signal
--
O
I/O read
IOR
25
26
GND
Ground signal
--
I
I/O channel ready IOCHRDY
27
28
GND
Ground signal
--
O
DMA Ack
IDEDACKA
29
30
GND
Ground signal
--
I
Interrupt request
IDEIRQ
31
32
N/C
--
--
O
Address 1
A1
33
34
ATA66
Detect ATA66
I
O
Address 0
A0
35
36
A2
Address 2
O
O
HD select 0
HCS0
37
38
HCS1
HD select 1
O
I
LED driving
LED
39
40
GND
Ground signal
--
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