Ampro Corporation 700 manual IDE Interface J22, Pin # Signal Description

Chapter 3 Hardware

IDE Interface (J22)

The ReadyBoard 700 provides one IDE connector (J22) for two IDE devices on the primary IDE controller and one CompactFlash socket (J23) on the secondary IDE controller.

The EIDE interface logic supports the following features:

•Transfer rate up to 100Mbps

•Increased reliability using Ultra DMA 33/66/100 transfer protocols

•Full scatter-gather capability

•Supports ATAPI and DVD compliant devices

•PIO IDE transfers as fast as 14Mbps.

•Bus master IDE transfers as fast as 66Mbps.

•Single Bus Master EIDE

•Supports two IDE drives on primary interface and one CompactFlash card on the secondary Table 3-9 list the signals for the IDE 44-pin, 2mm header.

Table 3-9. Primary IDE Interface Pin/Signal Descriptions (J22)

Pin #	Signal	Description
1	RESET*	Reset – Low active hardware reset (RSTDRV inverted)
2	GND	Digital Ground
3	PDD7	Primary Disk Data 7 – These signals (0 to 15) provide the disk data signals
4	PDD8	Primary Disk Data 8 – These signals (0 to 15) provide the disk data signals
5	PDD6	Primary Disk Data 6 – These signals (0 to 15) provide the disk data signals
6	PDD9	Primary Disk Data 9 – These signals (0 to 15) provide the disk data signals
7	PDD5	Primary Disk Data 5 – These signals (0 to 15) provide the disk data signals
8	PDD10	Primary Disk Data 10 – These signals (0 to 15) provide the disk data signals
9	PDD4	Primary Disk Data 4 – These signals (0 to 15) provide the disk data signals
10	PDD11	Primary Disk Data 11 – These signals (0 to 15) provide the disk data signals
11	PDD3	Primary Disk Data 3 – These signals (0 to 15) provide the disk data signals
12	PDD12	Primary Disk Data 12 – These signals (0 to 15) provide the disk data signals
13	PDD2	Primary Disk Data 2 – These signals (0 to 15) provide the disk data signals
14	PDD13	Primary Disk Data 13 – These signals (0 to 15) provide the disk data signals
15	PDD1	Primary Disk Data 1 – These signals (0 to 15) provide the disk data signals
16	PDD14	Primary Disk Data 14 – These signals (0 to 15) provide the disk data signals
17	PDD0	Primary Disk Data 0 – These signals (0 to 15) provide the disk data signals
18	PDD15	Primary Disk Data 15 – These signals (0 to 15) provide the disk data signals
19	GND	Digital Ground
20	NC-Key	Not Connected - Key pin plug
21	PDDREQ	Primary Device DMA Channel Request – Used for DMA transfers between
		host and drive (direction of transfer controlled by DIOR* and DIOW*). Also
		used in an asynchronous mode with DMACK*. Drive asserts IDRQ0 when
		ready to transfer or receive data.

ReadyBoard 700 Reference Manual 33