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
•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
Table
Pin # | Signal | Description |
1 | RESET* | Reset – Low active hardware reset (RSTDRV inverted) |
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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 |
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5 | PDD6 | Primary Disk Data 6 – These signals (0 to 15) provide the disk data signals |
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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 |
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8 | PDD10 | Primary Disk Data 10 – These signals (0 to 15) provide the disk data signals |
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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 |
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11 | PDD3 | Primary Disk Data 3 – These signals (0 to 15) provide the disk data signals |
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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 |
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14 | PDD13 | Primary Disk Data 13 – These signals (0 to 15) provide the disk data signals |
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15 | PDD1 | Primary Disk Data 1 – These signals (0 to 15) provide the disk data signals |
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16 | PDD14 | Primary Disk Data 14 – These signals (0 to 15) provide the disk data signals |
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17 | PDD0 | Primary Disk Data 0 – These signals (0 to 15) provide the disk data signals |
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18 | PDD15 | Primary Disk Data 15 – These signals (0 to 15) provide the disk data signals |
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19 | GND | Digital Ground |
20 | Not Connected - Key pin plug | |
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21 | PDDREQ | Primary Device DMA Channel Request – Used for DMA transfers between |
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| host and drive (direction of transfer controlled by DIOR* and DIOW*). Also |
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| used in an asynchronous mode with DMACK*. Drive asserts IDRQ0 when |
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| ready to transfer or receive data. |
ReadyBoard 700 | Reference Manual | 33 |