CY7C68310
Document 38-08030 Rev. *H
Page 22 of 34
0x6C
bInterval
High-speed interval for polling (max NAK rate). Does not
apply to FS bulk endpoints, set to zero.
0x00
USB Bulk In Endpoint (Full-speed)
0x6D
bLength
Length of this descriptor in bytes.
0x07
0x6E
bDescriptorType
Endpoint descriptor type.
0x05
0x6F
bEndpointAddress
This is an In endpoint, endpoint number 2.
0x82
0x70
bmAttributes
This is a bulk endpoint.
0x02
0x71
wMaxPacketSize (LSB)
Max data transfer size.
0x40
0x72
wMaxPacketSize (MSB)
0x00
0x73
bInterval
High-speed interval for polling (max NAK rate). Does not
apply to FS bulk endpoints, set to zero.
0x00
USB Interrupt Endpoint (Full-speed)
0x74
bLength
Length of this descriptor in bytes.
0x07
0x75
bDescriptorType
Endpoint descriptor type.
0x05
0x76
bEndpointAddress
This is an In endpoint, endpoint number 3.
0x83
0x77
bmAttributes
This is an interrupt endpoint.
0x03
0x78
wMaxPacketSize (LSB)
Max data transfer size.
0x02
0x79
wMaxPacketSize (MSB)
0x00
0x7A
bInterval
High-speed interval for polling (max NAK rate).
0xFF
0x7B
Reserved
Reserved.
0x00
USB String Descriptor – Index 0 (LANGID)
0x7C
bLength
LANGID descriptor length.
0x04
0x7D
bDescriptorType
Descriptor type.
0x03
0x7E
LANGID (lsb)
Language supported (0x0409 = US English). CY7C68310
only supports one language code
0x09
0x7F
LANGID (msb)
0x04
USB Standard Configuration Descriptor (VBUSPWRD Deasserted)
0x80
bLength
Length of Configuration descriptor in bytes.
0x09
0x81
bDescriptorType
Descriptor type.
0x02
0x82
bTotalLength (LSB)
Number of bytes returned in this configuration. This includes
the configuration descriptor plus all the interface and
endpoint descriptors.
0x27
0x83
bTotalLength (MSB)
0x00
0x84
bNumInterfaces
Number of interfaces supported. The CY7C68310 only
supports one interface.
0x01
0x85
bConfigurationValue
The value to use as an argument to Set Configuration to
select the configuration. This value must be set to 0x02.
0x02
0x86
iConfiguration
Index to the configuration string. This entry must equal half
of the address value where the string starts or 0x00 if the
string does not exist.
0x00
0x87
bmAttributes
Device attributes for this configuration. Configuration
characteristics:
0xC0
or
0xE0
0x88
bMaxPower
Maximum power consumption for this configuration. Units
used are mA*2 (i.e., 0x31 = 98 mA, 0xF9 = 498 mA).
0x31
Table 6-2. EEPROM Organization (continued)
I2C
Address
Field Name
Field Description
Required
I2C Data
Example
I2C Data
Bit
Description
On board default
7
Reserved. Set to ‘1’
‘1’
6
Self powered.
‘1’ = Self-powered device
5
Remote wake-up.
‘0’
4:0
Reserved. Set to ‘0’
‘0’
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