CY7C68300C/CY7C68301C
CY7C68320C/CY7C68321C
Table 11.Configuration Data Organization (continued)
| Byte | Configuration | Configuration | Required | Variable |
| Address | Item Name | Item Description | Contents | Contents |
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| 0x0A | Reserved | Bits 7:6 |
| 0x00 |
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| Reserved. Must be set to zero. |
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| GPIO Output Pin State | Bits 5:0 |
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| These bits select the value driven on the GPIO pins that are |
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| configured as outputs in configuration address 0x09. |
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| 0 = Drive the GPIO pin LOW |
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| 1 = Drive the GPIO pin HIGH |
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| 0x0B | LUN0 Identify String | This byte is a pointer to the start of a 24 byte ASCII |
| 0x00 |
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| |
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| LUN0 device identifier. This string is used by many operating |
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| systems as the |
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| 0x00, the Identify Device data from the drive is used instead. |
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| 0x0C | LUN1 Identify String | This byte is a pointer to the start of a 24 byte ASCII |
| 0x00 |
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|
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| |
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| LUN1 device identifier. This string is used by many operating |
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| systems as the |
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| 0x00, the Identify Device data from the drive is used instead. |
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| 0x0D | Delay After Reset | Number of |
| 0x00 |
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| reset, and the first attempt to access any drives. |
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| 0x0E | Reserved | Bits 7:5 |
| 0x00 |
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| Must be set to zero. |
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| Bit 4 |
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| |
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| Enable |
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| of DRVPWRVLD features without reporting the LUN0 device |
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| as removable media. |
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| 0 = LUN0 is removable media or DRVPWRVLD is disabled |
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| 1 = LUN0 device is |
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| CF UDMA Enable | Bit 3 |
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| Enable UDMA transfers for removable devices. Some CF |
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| devices interfere with UDMA transfers when more than one |
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| drive is connected to the ATA bus. |
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| 0 = Do not use UDMA transfers with removable devices |
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| (UDMA signals are not connected to the CF pins). |
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| 1 = Allow UDMA transfers to be used with removable |
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| devices (UDMA signals are connected to the CF pins). |
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| Fixed Number of Logical | Bits 2:1 |
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| Assume the presence of devices and do not perform a |
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| search of the ATA bus to discover the number of LUNs. |
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| 00 = Search ATA bus and determine number of LUNs |
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| 01 = Assume only LUN0 present; no ATA bus search |
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| 10 = Assume LUN0 and LUN1 present; no ATA bus search |
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| 11 = Assume LUN0 and LUN1 present; no ATA bus search |
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| Search ATA on VBUS | Bit 0 |
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| Search for ATA devices when VBUS returns. If this bit is set, |
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| the ATA bus is searched for ATA devices every time |
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| VBUS_ATA_ENABLE is asserted. This feature allows the |
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| AT2LP to be used in designs where the drive may be physi- |
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| cally removed (like docking stations or port replicators). |
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| 0 = Search ATA bus on VBUS_ATA_ENABLE assertion |
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| 1 = No ATA bus search on VBUS_ATA_ENABLE assertion |
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| 0x0F | Reserved | Must be set to 0x00 | 0x00 |
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| Device Descriptor |
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| |
| 0x10 | bLength | Length of device descriptor in bytes | 0x12 |
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| 0x11 | bDescriptor Type | Descriptor type. | 0x01 |
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Document |
| Page 25 of 42 | |||
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