LAN9500AI datasheet(140/213 Pages) MICROCHIP

部品番号	LAN9500AI

部品情報	LAN950x USB 2.0 to 10/100 Ethernet Controller

PDF	213 Pages

Scroll/Zoom	100%

メーカー	MICROCHIP [Microchip Technology]

ホームページ	http://www.microchip.com

Logo

140 / 213 page

LAN950x

DS00001875A-page 140

 2010 - 2015 Microchip Technology Inc.

7.3.14

BURST CAP REGISTER (BURST_CAP)

This register is used to limit the size of the data burst transmitted by the UTX. When more than the amount specified in

the BURST_CAP register is transmitted, the UTX will send a ZLP.

Address:

038h

Size:

32 bits

Note:

This register must be enabled through the Section 7.3.5, "Hardware Configuration Register (HW_CFG)".

Bits

Description

Type

Default

31:8

RESERVED

7:0

BURST_CAP

The maximum amount of contiguous data that may be transmitted by the

UTX before a ZLP is sent. This field has units of 512 bytes for HS mode and

64 bytes for FS mode.

Note:

A value less than or equal to 4 in HS mode or less than or equal to

32 in FS mode indicates that burst cap enforcement is disabled. In

this case, the UTX always responds to In Tokens with a ZLP when

the Bulk In Empty Response (BIR) bit in the Hardware Configuration

Bulk In Empty Response (BIR) bit is set.

R/W

00h

LAN9500AI データシート(PDF) 140 Page - Microchip Technology