Table 5-14. USB Default Interface 0, Alternate Setting 1, Bulk Endpoint Descriptors
Offset
Field
bLength
Description
Length of this Endpoint Descriptor
Value
07H
05H
06H
02H
40H
00H
00H
0
1
2
3
4
5
6
bDescriptorType
bEndpointAddress
bmAttributes
Descriptor Type = Endpoint
Endpoint Direction (1 is in) and Address = OUT6
XFR Type = BULK
wMaxPacketSize (L) Maximum Packet Size = 64 Bytes
wMaxPacketSize (H) Maximum Packet Size - High
bInterval
Polling Interval in Milliseconds (1 for iso)
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
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