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
Address
0x52
Field Name
iConfiguration
Field Description
Index to configuration string. This entry must equal half of the
address value where the string starts or 0x00 if the string does
not exist.
Device attributes for this configuration.
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.
Maximum power consumption for the second configuration.
Units used are mA*2 (i.e., 0x31 = 98 mA, 0xF9 = 498 mA).
0xC0
Required Suggested
Contents Contents
0x00
0x53
bmAttributes
0x54
bMaxPower
0x00
Full-speed Interface and Endpoint Descriptors
Interface Descriptor
0x55
0x56
0x57
0x58
0x59
0x5A
0x5B
0x5C
0x5D
bLength
bDescriptorType
bInterfaceNumber
bAlternateSettings
bNumEndpoints
bInterfaceClass
bInterfaceSubClass
bInterfaceProtocol
iInterface
Length of interface descriptor in bytes.
Descriptor type.
Interface number.
Alternate settings.
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 or 0x00 if the string does
not exist.
Length of this descriptor in bytes.
Endpoint descriptor type.
This is an In endpoint, endpoint number 8.
This is a bulk endpoint.
Max data transfer size.
Does not apply to FS bulk endpoints. Must be set to 0.
Length of this descriptor in bytes.
Endpoint descriptor type.
This is an Out endpoint, endpoint number 2.
This is a bulk endpoint.
Max data transfer size.
Does not apply to FS bulk endpoints. Must be set to 0.
0x50
0x00
0x09
0x04
0x00
0x00
0x02
0x08
0x06
USB Bulk InEndpoint
0x5E
0x5F
0x60
0x61
0x62
0x63
0x64
0x65
0x66
0x67
0x68
0x69
0x6A
0x6B
bLength
bDescriptorType
bEndpointAddress
bmAttributes
wMaxPacketSize (LSB)
wMaxPacketSize (MSB)
bInterval
bLength
bDescriptorType
bEndpointAddress
bmAttributes
wMaxPacketSize (LSB)
wMaxPacketSize (MSB)
bInterval
0x07
0x05
0x88
0x02
0x40
0x00
0x00
0x07
0x05
0x02
0x02
0x40
0x00
0x00
USB Bulk Out Endpoint
String Descriptor Examples
(Note: The values in these strings are given as examples only and should not be used in final
products. Designers are encouraged to modify the string values to reflect the final product, since they are what users will see
with their operating systems.)
USB String Descriptor–Index 0 (LANGID)
0x6C
0x6D
bLength
bDescriptorType
LANGID string descriptor length in bytes.
Descriptor type.
0x04
0x03
Document #: 38-08031 Rev. *E
Page 13 of 21
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