MU9C8328 Ethernet Interface

Rev. 4a

7

LEARN OP-CODE REGISTER (010)

Bit

Mnemonic

Description

15

DONE

1: Enables an interrupt when both the DA and SA CAM lookup are complete

14

P/R

1: Passes all frames, 0: Rejects all frames (NETEN) must be set to 0 for this option

13

NETEN

1: Enables network filtering, 0: Disables network filtering

12

ERR

1: Enables an interrupt for a frame error caused by loss of carrier or collision

11

FULL

1: Enables an interrupt if the LANCAM is full

10

NODA

1: Enables an interrupt for a no-match on DA

9

NOSA

1: Enables an interrupt for a no-match on SA

8

DA

1: Enables an interrupt for a DA match

7

SA

1: Enables an interrupt for an SA match

6

REJECT

1: Enables an interrupt for a reject

5

DAPON

1: Rejects frame if there is no DA match (positive filtering), 0: Rejects frame if there is

a DA match (negative filtering) (This bit is a “don’t care” if SAEN is 0)

4

SAPON

1: Rejects frame if there is no SA match (positive filtering), 0: Rejects frame if there is

an SA match (negative filtering) (This bit is a “don’t care” if SAEN is 0)

3

DAEN

1: Enables asserting the /REJECT pin after a DA compares, based on bit 5

2

SAEN

1: Enables asserting the /REJECT pin after an SA compares, based on bit 4

1

LEARN

1: Enables auto-learning on no-match of SA

0

ASSOC

1: Enables a read of Associated data after a DA match

CONTROL REGISTER (000)

STATUS REGISTER (001)

Bit

Mnemonic

Description

15–8

Reserved

7

COL

1 = Collision detected

6

LOC

1 = Loss of carrier detected

5

BUSY

1 = Network port is busy using the LANCAM

4

MATCH

1 = A match was found

3

FULL

1 = The LANCAM is full

2

DAM

1 = A Destination Address match was found

1

SAM

1 = A Source Address match was found

0

REJECT

1 = The frame was rejected

Bit

Mnemonic

Description

15–0

Contains the Op-Code to be used for an auto-learn, if enabled. Default is 0334H (MOV

NF, CR, V), but can be overwritten

FUNCTIONAL DESCRIPTION

Contined

Table 2: Register Descriptions