NET2270 datasheet(71/90 Pages) ETC2

71 / 90 page

Specification

NET2270 USB Interface Controller

______________________________________________________________________________

 NetChip Technology, Inc., 2003

335 Pioneer Way, Mountain View, California 94041

TEL (650) 526-1490

FAX (650) 526-1494

http://www.netchip.com

Rev 3.6, April 17, 2003

Get Configuration Descriptor (continued)

Offset

Number of

Bytes

Description

Suggested Value

Bulk OUT Endpoint 1 Descriptor

Size of this descriptor

07h

Descriptor Type (endpoint)

05h

Endpoint Address

bit 7 = direction (1 = IN, 0 = OUT)

bits 6:4 = reserved

bits 3:0 = endpoint number

01h

Endpoint Attributes

bits 7:2 = reserved

bits 1:0

00 = Control

01 = Isochronous

10 = Bulk

11 = Interrupt

02h

Maximum packet size of this endpoint

0200h

Maximum NAK rate of the endpoint.

Determined by Local CPU

Interrupt IN Endpoint 2 Descriptor

Size of this descriptor

07h

Descriptor Type (endpoint)

05h

Endpoint Address

bit 7 = direction (1 = IN, 0 = OUT)

bits 6:4 = reserved

bits 3:0 = endpoint number

82h

Endpoint Attributes

bits 7:2 = reserved

bits 1:0

00 = Control

01 = Isochronous

10 = Bulk

11 = Interrupt

03h

bits 10:0 = Maximum packet size of this endpoint.

(Determined by the EP_MAXPKT registers).

bits 12:11 = Number of additional transaction

opportunities per microframe:

00 = None (1 transaction per microframe)

01 = 1 additional (2 per microframe)

10 = 2 additional (3 per microframe)

11 = Reserved

Bits 15:13 = reserved

0008h

Interval for polling endpoint

Determined by Local CPU

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