CY4611B Cypress Semiconductor Corp, CY4611B Datasheet - Page 12

• Manufacturer Part Number: CY4611B
• Description: KIT USB TO ATA REFERENCE DESIGN
• Manufacturer: Cypress Semiconductor Corp
• Series: EZ-USB FX2LP™r

Specifications of CY4611B

• Main Purpose: Interface, USB 2.0 to ATA/CF
• Utilized Ic / Part: CY7C68013A, CY7C68014A, CY7C68015A, CY7C68016A
• Silicon Manufacturer: Cypress
• Silicon Core Number: UDMA-100
• Kit Application Type: Interface
• Application Sub Type: USB To ATA
• Rohs Compliant: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

0x06
0x07
Short Packet Before Stall
SRST Enable
Skip Pin Reset
ATAPI UDMA Enable
UDMA Modes
Reserved
ATA UDMA Enable
CY7C68300B/CY7C68301B to work with most devices
that incorrectly clear the BUSY bit before a valid status
is present.
Bit (2)
Determines if a short packet is sent prior to the STALL
of an IN endpoint. The USB Mass Storage Class Bulk-
Only Speci fication allows a device to send a short or
zero-length IN packet prior to returning a STALL
handshake for certain cases. Certain host controller
drivers may require a short packet prior to STALL.
1 = Force a short packet before STALL.
0 = Don’t force a short packet before STALL.
Bit (1)
Determines if the firmware is to do an SRST reset
during drive initialization. At least one reset must be
enabled. Do not set SRST to 0 and Skip Pin Reset to 1
at the same time.
1 = Perform SRST during initialization.
0 = Don’t perform SRST during initialization.
Bit (0)
Skip ARESET# assertion. When this bit is set, the
firmware will bypass ARESET# during any initialization
other than power up. Do not set SRST to 0 and Skip Pin
Reset to 1 at the same time.
0 = Allow ARESET# assertion for all resets.
1 = Disable ARESET# assertion except for power-on
reset cycles.
Bit (7)
Enable Ultra DMA data transfer support for ATAPI
devices. If enabled, and if the ATAPI device reports
UDMA support for the indicated modes, the firmware
will utilize UDMA data transfers at the highest
negotiated rate possible.
0 = Disable ATA device UDMA support.
1 = Enable ATA device UDMA support.
Bit (6)
Enable Ultra DMA data transfer support for ATAPI
devices. If enabled, and if the ATAPI device reports
UDMA support for the indicated modes, the
FIRMWARE will utilize UDMA data transfers at the
highest negotiated rate possible.
0 = Disable ATAPI device UDMA support.
1 = Enable ATAPI device UDMA support.
Bit (5:0)
These bits select which UDMA modes, if supported, are
enabled. Setting to 1 enables. Multiple bits may be set.
The FIRMWARE will operate in the highest enabled
UDMA mode supported by the device. The FIRMWARE
supports UDMA modes 2, 3, and 4 only.
Bit Descriptions
5
4
3
2
1
0
Bits(7:3)
Must be set to 0.
Reserved. Must be set to 0.
Enable UDMA mode 4.
Reserved. Must be set to 0.
Enable UDMA mode 2.
Reserved. Must be set to 0.
Reserved. Must be set to 0.
EZ-USB FX2LP USB to ATA Reference Design Notes
12
0xD4
0x07