Specifications
CY7C65620
CY7C65630
Document Number: 38-08037 Rev. AB Page 12 of 32
Interface Descriptor
Endpoint Descriptor
Device Qualifier Descriptor
Byte Full Speed High Speed Field Name Description
0 0x09 0x09 bLength 9 bytes
1 0x04 0x04 bDescriptorType INTERFACE_DESCRIPTOR
2 0x00 0x00 bInterfaceNumber Number of this interface
3 0x00 0x00 bAlternateSetting
Value used to select this alternate setting for the
interface
4 0x01 0x01 bNumEndpoints
Number of endpoints used by this interface (not including
endpoint 0)
5 0x09 0x09 bInterfaceClass Hub class code
6 0x00 0x00 bInterfaceSubClass Subclass code (assigned by the USB-IF)
7 0x00 0x00 bInterfaceProtocol Protocol code (assigned by the USB-IF)
8 0x00 0x00 iInterface Index of the string descriptor describing this interface
Byte Full-Speed High-Speed Field Name Description
0 0x07 0x07 bLength 7 bytes
1 0x05 0x05 bDescriptorType ENDPOINT_DESCRIPTOR
2 0x81 0x81 bEndpointAddress IN Endpoint #1
3 0x03 0x03 bmAttributes Interrupt
4, 5 0x0001 0x0001 wMaxPacketSize Maximum packet size
6 0xFF 0x0C bInterval Polling rate
Byte Full-Speed High-Speed Field Name Description
0 0x0A 0x0A bLength 10 bytes
1 0x06 0x06 bDescriptorType DEVICE_QUALIFIER
2, 3 0x0200 0x0200 bcdUSB
USB Specification Release Number in Binary-Coded
Decimal
4 0x09 0x09 bDeviceClass Class code (assigned by the USB-IF)
5 0x00 0x00 bDeviceSubClass Subclass code (assigned by the USB-IF)
6 0x01 0x00 bDeviceProtocol Protocol code (assigned by the USB-IF)
7 0x40 0x40 bMaxPacketSize0 Maximum packet size for other speed
8 0x01 0x01 bNumConfigurations Number of other-speed configurations
9 0x00 0x00 bReserved Reserved for future use, must be zero