CY7C68320C-100AXC Cypress Semiconductor Corp, CY7C68320C-100AXC Datasheet - Page 22

• Manufacturer Part Number: CY7C68320C-100AXC
• Description: IC USB 2.0 BRIDGE AT2LP 100LQFP
• Manufacturer: Cypress Semiconductor Corp
• Series: EZ-USB AT2LP™r
• Type: USB to ATA Bridger

Specifications of CY7C68320C-100AXC

• Package / Case: 100-LQFP
• Controller Type: USB 2.0 Controller
• Interface: I²C
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 50mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Operating Supply Voltage: 3.3 V
• Supply Current: 50 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: CY4615B - KIT USB TO ATA REFERENCE DESIGN
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 428-2267; CY7C68320C-100AXC

Table 11. Configuration Data Organization
Document 001-05809 Rev. *B
Note Devices running in Backward Compatibility (CY7C68300A) Mode must use the CY7C68300A EEPROM organization, and
not the format shown in this document. Refer to the CY7C68300A data sheet for the CY7C68300A EEPROM format.
AT2LP Configuration
0x00
0x01
0x02
0x03
0x04
0x05
Address
Byte
EEPROM signature byte 0
EEPROM signature byte 1
APM Value
Reserved
bVSCBSignature Value
Reserved
Enable mode page 8
Disable wait for INTRQ
BUSY Bit Delay
Short Packet Before Stall
Configuration
Item Name
I
proper AT2LP pin configuration.
I
proper AT2LP pin configuration.
ATA Device Automatic Power Management Value. If an
attached ATA device supports APM and this field contains
other than 0x00, the AT2LP issues a SET_FEATURES
command to Enable APM with this value during the drive
initialization process. Setting APM Value to 0x00 disables
this functionality. This value is ignored with ATAPI devices.
Must be set to 0x00.
Value in the first byte of the CBW CB field that designates
that the CB is to be decoded as vendor specific ATA
commands instead of the ATAPI command block. See
“Functional Overview”
this byte is used.
Bits 7:6
Bit 5
Enable the write caching mode page (page 8). If this page
is enabled, Windows disables write caching by default,
which limits write performance.
0= Disable mode page 8.
1= Enable mode page 8.
Bit 4
Poll status register rather than waiting for INTRQ. Setting
this bit to 1 improves USB BOT test results but may
introduce compatibility problems with some devices.
0 = Wait for INTRQ.
1 = Poll status register instead of using INTRQ.
Bit 3
Enable a delay of up to 120 ms at each read of the DRQ bit
where the device data length does not match the host data
length. This enables the CY7C68300C/CY7C68301C to
work with most devices that incorrectly clear the BUSY bit
before a valid status is present.
0 = No BUSY bit delay.
1 = Use BUSY bit delay.
Bit 2
Determines if a short packet is sent before the STALL of an
IN endpoint. The USB Mass Storage Class Bulk-Only Speci-
fication enables a device to send a short or zero-length IN
packet before returning a STALL handshake for certain
cases. Certain host controller drivers may require a short
packet before STALL.
0 = Do not force a short packet before STALL.
1 = Force a short packet before STALL.
2
2
C EEPROM signature byte 0. This byte must be 0x53 for
C EEPROM signature byte 1. This byte must be 0x4B for
Item Description
Configuration
on page 15 for more detail on how
CY7C68300C, CY7C68301C
CY7C68320C, CY7C68321C
Required
Contents
0x4B
0x53
Contents
Variable
Page 22 of 42
0x07
0x00
0x00
0x24
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