IDE Hard Drive / CompactFlash / CD-ROM Interface

IDE Hard Drive / CompactFlash / CD-ROM Interface

One IDE interface is available to connect up to two IDE devices, such as hard disks, CD-ROM drives or CompactFlash (CF) media. Use CMOS Setup to specify the drive parameters of the attached drives.

An activity indication LED is provided on the EPM-4. The yellow LED of D5 (See page 22) will show that activity is detected on the IDE interface.

A 2mm 44-pin connector (J6) and a CF socket (J5) are provide on the board. Jumper V3 determines if the CF media plugged into J5 is the IDE Master or slave (see Table 2).

Note: The IDE port is a simple interface compatible with PIO mode 0.

Warning! Cable length must be 18" or less to maintain proper signal integrity. The grounds in this connector should not be used to carry motor current.

Table 4: IDE Hard Drive Connector Pinout

J6

Signal

IDE

 

Pin

Name

Signal Name

Function

1

HRST*

Host Reset

Reset signal from CPU

2

Ground

Ground

Ground

3

IDE7

DATA 7

Data bit 7

4

ID8

DATA 8

Data bit 8

5

ID6

DATA 6

Data bit 6

6

ID9

DATA 9

Data bit 9

7

ID5

DATA 5

Data bit 5

8

ID10

DATA 10

Data bit 10

9

ID4

DATA 4

Data bit 4

10

ID11

DATA 11

Data bit 11

11

ID3

DATA 3

Data bit 3

12

ID12

DATA 12

Data bit 12

13

ID2

DATA 2

Data bit 2

14

ID13

DATA 13

Data bit 13

15

ID1

DATA 1

Data bit 1

16

ID14

DATA 14

Data bit 14

17

ID0

DATA 0

Data bit 0

18

ID15

DATA 15

Data bit 15

19

Ground

Ground

Ground

20

NC

NC

No connection

21

IDEDRQ

IDEDRQ

DMA/Request

22

Ground

Ground

Ground

23

IOWR*

HOST IOW*

I/O write

24

Ground

Ground

Ground

25

IORD*

HOST IOR*

I/O read

26

Ground

Ground

Ground

27

RDY

Ready

Wait control

28

HAEN

ALE

Address latch enable

29

IDEDACK

IDEACK

DMA/Ack.

30

Ground

Ground

Ground

31

HINT

HOST IRQ10

IRQ10

32

XI16*

HOST IOCS16*

Drive register enabled

33

PA1

HOST ADDR1

Address bit 1

34

NC

NC

No connection

35

PA0

HOST ADDR0

Address bit 0

36

PA2

HOST ADDR2

Address bit 2

37

ECS0*

HOST CS0*

Reg. Access chip select 0

38

ECS1*

HOST CS1*

Reg. Access chip select 1

39

NC

NC

No connection

40

Ground

Ground

Ground

41

5V

Power

Power

42

5V

Power

Power

43

Ground

Ground

Ground

44

NC

NC

No connection

Reference – 28

EPM-4 Reference Manual

Page 35 Page 37
Page 36
Image 36
Lynx EPM-4 manual IDE Hard Drive / CompactFlash / CD-ROM Interface, IDE Hard Drive Connector Pinout Signal
Page 35 Page 37

EPM-4 specifications

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