AX88780 datasheet(30/49 Pages) ASIX

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AX88780

4.37 TXFAILCNT--TX Fail Counter

Offset Address = FCACh

Default = 32’h0000_0000

Field

Name

Type

Default

Description

31:16

All 0’s

Reserved

15:0

TXFILCNT R/W

All 0’s

TX Fail Counter

This field records the number of transmitted error for TX packet.

4.38 PROMDPR--EEPROM Data Port Register

Offset Address = FCB0h

Default = 32’h0000_0000

Field

Name

Type

Default

Description

31:16

All 0’s

Reserved

15:0

PROMDP R/W

All 0’s

EEPROM Data Port

The data to or from EEPROM is set in this field.

4.39 PROMCTRL--EEPROM Control Register

Offset Address= FCB4h

Default = 32’h0000_0000

Field

Name

Type Default

Description

31:15

All 0’s

Reserved

14:12 ROM_CMD R/W

3’b000

EEPROM Command Code.

Driver set this field to represent what type command will be send to EEPROM

device.

3’b110 = read command

3’b111 = erase command

3’b101 = write command

ROM_WT

R/W

Write EEPROM

Set to ‘1’ to write EEPROM, it will be cleared when MAC finished the write

operation.

ROM_RD

R/W

Read EEPROM

Set to ‘1’ to read EEPROM, it will be cleared when MAC finished the read

operation. Driver can read PROMDPR register to get the returned data.

ROM_RLD R/W

Reload EEPROM

Set to ‘1’ to re-load EEPROM, this bit will be cleared when MAC finished

loading operation.

Reserved

7:0

ROM_ADDR R/W

8’h00

EEPROM Address

Set this field to define the address for serial EEPROM access. (only support

16-bit data access, 93C56 type)

4.40 MAXRXLEN--Max. RX Packet Length Register

Offset Address= FCB8h

Default = 32’h0000_0600

Field

Name

Type

Default

Description

31:11

All 0’s

Reserved

10:0

RXLEN R/W

11’h600

Max RX Packet length

This field defines the max length of received packet. It doesn’t include 4-byte

CRC.

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