EZ-USB Datasheet, PDF (92/334 Pages) Cypress Semiconductor – The EZ-USB USB Integrated Circuit

Table 5-14. USB Default Interface 0, Alternate Setting 1, Bulk Endpoint Descriptors
Offset
Field
Description
0 bLength
Length of this Endpoint Descriptor
1 bDescriptorType
Descriptor Type = Endpoint
2 bEndpointAddress Endpoint Direction (1 is in) and Address = OUT6
3 bmAttributes
XFR Type = BULK
4 wMaxPacketSize (L) Maximum Packet Size = 64 Bytes
5 wMaxPacketSize (H) Maximum Packet Size - High
6 bInterval
Polling Interval in Milliseconds (1 for iso)
Value
07H
05H
06H
02H
40H
00H
00H
Interface 0, alternate setting 1 has six bulk endpoints with max packet sizes of 64 bytes.
Even numbered endpoints were chosen to allow endpoint pairing. For more on endpoint
pairing, see Chapter 6, "EZ-USB Bulk Transfers."
EZ-USB TRM v1.9
Chapter 5. EZ-USB CPU
Page 5-17