Cypress specifications CY7C68300C/CY7C68301C CY7C68320C/CY7C68321C

CY7C68300C/CY7C68301C

CY7C68320C/CY7C68321C

Table 11.Configuration Data Organization (continued)

	Byte	Configuration	Configuration	Required	Variable
	Address	Item Name	Item Description	Contents	Contents
	0x0A	Reserved	Bits 7:6		0x00
			Reserved. Must be set to zero.
		GPIO Output Pin State	Bits 5:0
			These bits select the value driven on the GPIO pins that are
			configured as outputs in configuration address 0x09.
			0 = Drive the GPIO pin LOW
			1 = Drive the GPIO pin HIGH
	0x0B	LUN0 Identify String	This byte is a pointer to the start of a 24 byte ASCII		0x00
			(non-Unicode) string in the EEPROM that is used as the
			LUN0 device identifier. This string is used by many operating
			systems as the user-visible name for the drive. If this byte is
			0x00, the Identify Device data from the drive is used instead.
	0x0C	LUN1 Identify String	This byte is a pointer to the start of a 24 byte ASCII		0x00
			(non-Unicode) string in the EEPROM that is used as the
			LUN1 device identifier. This string is used by many operating
			systems as the user-visible name for the drive. If this byte is
			0x00, the Identify Device data from the drive is used instead.
	0x0D	Delay After Reset	Number of 20-ms ticks to wait between AT2LP startup or		0x00
			reset, and the first attempt to access any drives.
	0x0E	Reserved	Bits 7:5		0x00
			Must be set to zero.
		Bus-Powered Flag	Bit 4
			Enable bus-powered HDD support. This bit enables the use
			of DRVPWRVLD features without reporting the LUN0 device
			as removable media.
			0 = LUN0 is removable media or DRVPWRVLD is disabled
			1 = LUN0 device is bus-powered and non-removable
		CF UDMA Enable	Bit 3
			Enable UDMA transfers for removable devices. Some CF
			devices interfere with UDMA transfers when more than one
			drive is connected to the ATA bus.
			0 = Do not use UDMA transfers with removable devices
			(UDMA signals are not connected to the CF pins).
			1 = Allow UDMA transfers to be used with removable
			devices (UDMA signals are connected to the CF pins).
		Fixed Number of Logical	Bits 2:1
			Assume the presence of devices and do not perform a
			search of the ATA bus to discover the number of LUNs.
			00 = Search ATA bus and determine number of LUNs
			01 = Assume only LUN0 present; no ATA bus search
			10 = Assume LUN0 and LUN1 present; no ATA bus search
			11 = Assume LUN0 and LUN1 present; no ATA bus search
		Search ATA on VBUS	Bit 0
			Search for ATA devices when VBUS returns. If this bit is set,
			the ATA bus is searched for ATA devices every time
			VBUS_ATA_ENABLE is asserted. This feature allows the
			AT2LP to be used in designs where the drive may be physi-
			cally removed (like docking stations or port replicators).
			0 = Search ATA bus on VBUS_ATA_ENABLE assertion
			1 = No ATA bus search on VBUS_ATA_ENABLE assertion
	0x0F	Reserved	Must be set to 0x00	0x00
	Device Descriptor
	0x10	bLength	Length of device descriptor in bytes	0x12
	0x11	bDescriptor Type	Descriptor type.	0x01
Document 001-05809 Rev. *A				Page 25 of 42

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