LAN9250 datasheet(359/421 Pages) MICROCHIP

Part #	LAN9250

Description	Integrated Ethernet PHY with HP Auto-MDIX

PDF	421 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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359 / 421 page

 2015 Microchip Technology Inc.

DS00001913A-page 359

LAN9250

14.8.33

1588 PORT RX CHECKSUM DROPPED COUNT REGISTER

(1588_RX_CHKSUM_DROPPED_CNT)

This register counts the number of packets dropped at ingress due to a bad UDP checksum. The packet will also be

counted as an error by the receiving MAC.

Note:

Port and GPIO registers share a common address space. Port registers are selected by the Bank Select

(BANK_SEL[2:0] in the 1588 Bank Port GPIO Select Register (1588_BANK_PORT_GPIO_SEL).

Offset:

188h

Size:

32 bits

Bank:

Bits

Description

Type

Default

31:0

Bad Checksum Dropped Count (BAD_CHKSUM_DROPPED_CNT[31:0])

This field is a count of packets dropped at ingress due to a bad UDP check-

sum. It can be cleared by writing a zero value at the risk of losing any previ-

ous count.

Note:

This counter will stop at its maximum value of FFFF_FFFFh.

Minimum rollover time at 100 Mbps is approximately 481 hours.

R/W

00000000h

LAN9250 Datasheet(PDF) 359 Page - Microchip Technology