DM9013 datasheet(25/75 Pages) DAVICOM

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DM9013

3-port switch with Processor Interface

Preliminary datasheet

DM9013-15-DS-P03

April 9, 2009

6.24 Receive Check Sum Control Status Register (32H)

Bit

Name

Default

Description

UDPS

HP0,RO

UDP Checksum Status

1: if UDP packet checksum fail

TCPS

HP0,RO

TCP Checksum Status

1: if TCP packet checksum fail

IPS

HP0,RO

IP Checksum Status

1: if IP packet checksum fail

UDPP

HP0,RO

This is a UDP Packet

TCPP

HP0,RO

This is a TCP Packet

IPP

HP0,RO

This is a IP Packet

RCSEN

HPS0,RW Receive Checksum Checking Enable

When set, the checksum status will store in packet first byte of status header.

DCSE

HPS0,RW Discard Checksum Error Packet

When set, if IP/TCP/UDP checksum field is error, this packet will be discarded.

6.25 General Purpose Control Register 2 (34H)

Bit

Name

Default

Description

7~0

GPC2

HP0,RW

General Purpose Control 2

Define the input/output direction of pins SD23~16, which are used as general

purpose pins when none 32-bit mode and external MII mode, respectively.

6.26 General Purpose Register 2 (35H)

Bit

Name

Default

Description

7~0

GPD2

HP0,RW

General Purpose Register 2 Data

When the correspondent bit of General Purpose Control Register 2 is set, the value

of the bit is reflected to pin SD23~16

When the correspondent bit of General Purpose Control Register 2 is 0, the value

of the bit to be read is reflected from correspondent pins SD23~16

6.27 General Purpose Control Register 3 (36H)

Bit

Name

Default

Description

7~0

GPC3

HP0,RW

General Purpose Control 3

Define the input/output direction of pins SD31~24, which are used as general

purpose pins when none 32-bit mode and external MII mode, respectively.

6.28 General Purpose Register 3 (37H)

Bit

Name

Default

Description

7~0

GPD3

HP0,RW

General Purpose Register 3 Data

When the correspondent bit of General Purpose Control Register 3 is set, the value

of the bit is reflected to pin SD31~24

When the correspondent bit of General Purpose Control Register 3 is 0, the value

of the bit to be read is reflected from correspondent pins SD31~24

DM9013 Datasheet(PDF) 25 Page - Davicom Semiconductor, Inc.

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