CY7C68310 CYPRESS [Cypress Semiconductor], CY7C68310 Datasheet - Page 15

• Manufacturer Part Number: CY7C68310
• Manufacturer: CYPRESS [Cypress Semiconductor]

Table 6-2. EEPROM Organization (continued)
Document 38-08030 Rev. *H
0x06
0x07
0x08
0x09
Address
I
2
C
VS/MSC SOFT_RESET
DISKRDY Polarity
ATA Command Designator
Reserved
Retry ATAPI
Initialization Status
Force ATA Device
Skip ATA/ATAPI Device Initial-
ization
Reserved
Last LUN Identifier
ATAEN
Field Name
‘1’ = USB FS only – do not allow HS negotiation during USB
reset
Bit(1)
Vendor-specific/MSC SOFT_RESET control.
‘0’ = Vendor-specific USB command utilized for
SOFT_RESET
‘1’ = Mass Storage Class USB command utilized for
SOFT_RESET
Bit (0)
DISKRDY active polarity. DISKRDY Polarity is ignored if
IMODE is set to ‘1’. During IMODE operation DISKRDY
polarity is active HIGH.
‘0’ = Active HIGH polarity
‘1’ = Active LOW polarity
Value in CBW CB field that designates if the CB is decoded
as vendor-specific ATA/CFG commands instead of the
ATAPI command block.
Bits (7:1)– must be set to ‘0’.
Bit (0)
This bit enables the CY7C68310 to accommodate ATAPI
devices that take longer to initialize than what is allowed in
the ATA/ATAPI-6 specification.
‘1’ = Retry ATAPI commands
‘0’ = Normal ATAPI timing
Bit (7) – Read only
Drive Initialization Status.
If set, indicates the drive initialization sequence state
machine is active.
Bit (6)
Allows software to manually enable ATA Translation with
devices that do not support CY7C68310 device initialization
algorithms. Force ATA Device must be set to ‘1’ in
conjunction with Skip ATA/ATAPI Device Initialization and
ATA Translation Enable.
Bit (5)
Forces the CY7C68310 to skip device initialization upon
startup. This bit should be cleared for IMODE operation. The
USB device driver must initialize the attached device (if
required) when this bit is set. For ATAPI devices, the host
driver must issue an IDENTIFY command utilizing ATA.
‘0’ = normal operation
‘1’ = only reset the device and write the device control
register prior to processing commands
Bits (4:3) – must be set to ‘0’.
Bits (2:0)
Maximum number of LUNs device supports.
Bit (7) – Read only.
Holds the current logic state of the ATAEN pin.
Field Description
Required
I
2
C Data
CY7C68310
Page 15 of 34
Example
I
2
C Data
0x24
0x01
0x00
0x01