Renesas mPD720231, Руководство пользователя

Страница: 23 / 43

μ
PD720231 4. USB Descriptor Information
R19UH0094EJ0100 Rev 1.00 Page 14 of 30
Mar 1, 2013
(2)
SuperSpeed Endpoint Companion Descriptor (Super-speed only)
Offset Field Size Value Description
0 bLength 1 06h Size of descriptor
1 bDescriptorType 1 30h SUPERSPEED_USB_ENDPOINT_COMPANION
descriptor type.
2 bMaxBurst 1 0Fh Max. burst = 16
3 bmAttributes 1 00h Stream not supported
4 wBytesPerInterval 2 0000h
−
4.5.1.2
Data-IN
(1)
Endpoint Descriptor (All speeds)
Offset Field Size Value Description
0 bLength 1 07h Size of descriptor
1 bDescriptorType 1 05h Endpoint descriptor type
2 bEndpointAddress 1 82h Address: 2, Direction: IN
3 bmAttributes 1 02h Endpoint’s attributes (Bulk)
4 wMaxPacketSize 2 0400h or
0200h or
0040h
Maximum packet size
0400h: 1024 bytes in Super-speed mode.
0200h: 512 bytes in High-speed mode.
0040h: 64 bytes in Full-speed mode.
6 bInterval 1 00h Interval for polling endpoint for data transfers.
(2)
SuperSpeed Endpoint Companion Descriptor (Super-speed only)
Offset Field Size Value Description
0 bLength 1 06h Size of descriptor
1 bDescriptorType 1 30h SUPERSPEED_USB_ENDPOINT_COMPANION
descriptor type.
2 bMaxBurst 1 0Fh Max. burst=16
3 bmAttributes 1 00h Stream not supported
4 wBytesPerInterval 2 0000h
−