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Chapter 3 Hardware
30 Reference Manual ReadyBoard 800
IDE Interface (J6)
The ReadyBoard 800 provides one primary IDE connector (J6) for two IDE devices and one compact
flash socket (J23) on the secondary IDE controller.
The I/O Hub (Southbridge) EIDE interface logic supports the following features:
• Transfer rate up to 100 Mbps
• Increased reliability using Ultra DMA 33/66/100 transfer protocols
• Supports ATAPI and DVD compliant devices
• PIO IDE transfers as fast as 14 Mbps
• Single Bus Master EIDE
• Supports two IDE drives on primary interface and one compact flash card on the secondary IDE
Table 3-5 describes the primary IDE pins/ signals for the IDE 44-pin, 2 rows, odd/even (1, 2) with
2 mm pin spacing.
Table 3-5. Primary IDE Interface Pin/Signal Descriptions (J6)
Pin # Signal Description
1 RESET* Reset – Low active hardware reset (RSTDRV inverted)
2 GND Ground
3 PDD7 Primary Disk Data 7 – These signals (0 to 15) provide the disk data signals.
4 PDD8 Primary Disk Data 8 – See pin-3 (PDD7) for more information.
5 PDD6 Primary Disk Data 6 – See pin-3 (PDD7) for more information.
6 PDD9 Primary Disk Data 9 – See pin-3 (PDD7) for more information.
7 PDD5 Primary Disk Data 5 – See pin-3 (PDD7) for more information.
8 PDD10 Primary Disk Data 10 – See pin-3 (PDD7) for more information.
9 PDD4 Primary Disk Data 4 – See pin-3 (PDD7) for more information.
10 PDD11 Primary Disk Data 11 – See pin-3 (PDD7) for more information.
11 PDD3 Primary Disk Data 3 – See pin-3 (PDD7) for more information.
12 PDD12 Primary Disk Data 12 – See pin-3 (PDD7) for more information.
13 PDD2 Primary Disk Data 2 – See pin-3 (PDD7) for more information.
14 PDD13 Primary Disk Data 13 – See pin-3 (PDD7) for more information.
15 PDD1 Primary Disk Data 1 – See pin-3 (PDD7) for more information.
16 PDD14 Primary Disk Data 14 – See pin-3 (PDD7) for more information.
17 PDD0 Primary Disk Data 0 – See pin-3 (PDD7) for more information.
18 PDD15 Primary Disk Data 15 – See pin-3 (PDD7) for more information.
19 GND Ground
20 NC-Key Not Connected - Key pin plug
21 PDREQ Primary 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.
22 GND Ground