Ide Interface (J6, J7); Table 3-9. Primary Ide Interface Pin/Signal Descriptions (J6) - Ampro LittleBoard800 Reference Manual

Chapter 3

IDE Interface (J6, J7)

The LittleBoard 800 provides two IDE connectors for primary and secondary IDE signals.
The EIDE interface logic supports the following features:
•
Bus master IDE transfer rate up to 100Mbps when 80-pin grounded shielded cable is used
•
Increase 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.
•
Single Bus Master EIDE
• Supports two IDE drives per interface (primary or secondary)
Tables 3-9 and 3-10 lists the signals for the two IDE 40 pin connectors, with 2 rows, odd/even, (1, 2),
0.100" pin spacing.

Table 3-9. Primary IDE Interface Pin/Signal Descriptions (J6)

Pin # Signal
1 RESET*
2 GND
3 PD7
4 PD8
5 PD6
6 PD9
7 PD5
8 PD10
9 PD4
10 PD11
11 PD3
12 PD12
13 PD2
14 PD13
15 PD1
16 PD14
17 PD0
18 PD15
19 GND
20 NC/Key
21 PDDREQ
22 GND
34
Description
Low active hardware reset (RSTDRV inverted)
Ground
Primary Disk Data 7 – These signals (0 to 15) provide the disk data signals.
Primary Disk Data 8 – These signals (0 to 15) provide the disk data signals.
Primary Disk Data 6 – These signals (0 to 15) provide the disk data signals.
Primary Disk Data 9 – These signals (0 to 15) provide the disk data signals.
Primary Disk Data 5 – These signals (0 to 15) provide the disk data signals.
Primary Disk Data 10 – These signals (0 to 15) provide the disk data signals.
Primary Disk Data 4 – These signals (0 to 15) provide the disk data signals.
Primary Disk Data 11 – These signals (0 to 15) provide the disk data signals.
Primary Disk Data 3 – These signals (0 to 15) provide the disk data signals.
Primary Disk Data 12 – These signals (0 to 15) provide the disk data signals.
Primary Disk Data 2 – These signals (0 to 15) provide the disk data signals.
Primary Disk Data 13 – These signals (0 to 15) provide the disk data signals.
Primary Disk Data 1 – These signals (0 to 15) provide the disk data signals.
Primary Disk Data 14 – These signals (0 to 15) provide the disk data signals.
Primary Disk Data 0 – These signals (0 to 15) provide the disk data signals.
Primary Disk Data 15 – These signals (0 to 15) provide the disk data signals.
Ground
Not Connected - Key pin plug
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.
Ground
Reference Manual
Hardware
LittleBoard 800