This part is not recommended for new designs
Use CY7C68300B EZ-USB AT2LP™ USB2.0 to ATA/ATAPI
Bridge for new designs
CY7C68300A
Table 6-6. EEPROM Organization (continued)
EEPROM
Required Suggested
Contents Contents
0xC0
Address
Field Name
bmAttributes
Field Description
Device attributes for this configuration.
0x33
Bit Descriptions
7 Reserved. Must be set to 1.
6 Self-powered. Must be set to 1.
5 Remote wake-up. Must be set to 0.
4–0 Reserved. Must be set to 0.
0x34
bMaxPower
Maximum power consumption for this configuration. Units
used are mA*2 (i.e., 0x31 = 98 mA, 0xF9 = 498 mA). 0x00
reported for self-powered devices.
0x00
High-speed Interface and Endpoint Descriptors
Interface Descriptor
0x35
0x36
0x37
0x38
0x39
0x3A
0x3B
0x3C
0x3D
bLength
Length of interface descriptor in bytes.
Descriptor type.
Interface number.
Alternate setting.
Number of endpoints.
Interface class.
Interface subclass.
Interface protocol.
Index to first interface string. This entry must equal half of the
address value where the string starts or0x00 if the string does
not exist.
0x09
0x04
0x00
0x00
0x02
0x08
0x06
0x50
0x00
bDescriptorType
bInterfaceNumber
bAlternateSetting
bNumEndpoints
bInterfaceClass
bInterfaceSubClass
bInterfaceProtocol
iInterface
USB Bulk In Endpoint
0x3E
0x3F
0x40
0x41
0x42
0x43
0x44
bLength
Length of this descriptor in bytes.
Endpoint descriptor type.
This is an In endpoint, endpoint number 8.
This is a bulk endpoint.
0x07
0x05
0x88
0x02
0x00
0x02
0x00
bDescriptorType
bEndpointAddress
bmAttributes
wMaxPacketSize (LSB)
wMaxPacketSize (MSB)
bInterval
Max data transfer size.
HS interval for polling (max. NAK rate).
USB Bulk Out Endpoint
0x45
0x46
0x47
0x48
0x49
0x4A
0x4B
bLength
Length of this descriptor in bytes.
Endpoint descriptor type.
This is an Out endpoint, endpoint number 2.
This is a bulk endpoint.
0x07
0x05
0x02
0x02
0x00
0x02
0x00
bDescriptorType
bEndpointAddress
bmAttributes
wMaxPacketSize (LSB)
wMaxPacketSize (MSB)
bInterval
Max data transfer size.
HS interval for polling (max. NAK rate).
Full-speed Configuration Descriptor
0x4C
0x4D
0x4E
0x4F
bLength
Length of configuration descriptor in bytes.
Descriptor type.
Number of bytes returned in this configuration. This includes
theconfigurationdescriptorplusalltheinterfaceandendpoint
descriptors.
0x09
0x02
0x20
0x00
bDescriptorType
bTotalLength (LSB)
bTotalLength (MSB)
0x50
0x51
bNumInterfaces
bConfiguration Value
Number of interfaces supported.
0x01
0x01
The value to use as an argument to Set Configuration to
select the configuration.
Document #: 38-08031 Rev. *E
Page 12 of 21
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