DP83821 datasheet(59/86 Pages) NSC

Part #	DP83821

Description	10/100/1000 Mb/s PCI Ethernet Network Interface Controller

PDF	86 Pages

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Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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4.0 Register Set (Continued)

4.2.21 Receive Filter/Match Data Register

The RFDR register is used for reading from and writing to the internal receive filter registers, the pattern buffer memory,

and the hash table memory.

9-0

RFADDR

Receive Filter Extended

Selects which internal receive filter register is accessible via RFDR:

Perfect Match Register (PMATCH)

000h - PMATCH octets 1-0

002h - PMATCH octets 3-2

004h - PMATCH octets 5-4

Pattern Count Registers (PCOUNT)

006h - PCOUNT1, PCOUNT0

008h - PCOUNT3, PCOUNT2

SecureOn Password Register (SOPAS)

00Ah - SOPAS octets 1-0

00Ch - SOPAS octets 3-2

00Eh - SOPAS octets 5-4

Filter Memory

100h-3FEh - Rx filter memory (Hash table/pattern buffers)

Tag: RFDR

Size: 32 bits

Hard Reset: 00000000h

Offset: 004Ch

Access: Read Write

Soft Reset: 00000000h

bit

tag

description

usage

31-18

unused

17-16

BMASK

Byte mask

Used as byte mask values for pattern match template data.

15-0

RFDATA

Receive Filter Data

DP83821 Datasheet(PDF) 59 Page - National Semiconductor (TI)

DP83821 Datasheet(HTML) 59 Page - National Semiconductor (TI)

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