AX88780 datasheet(26/55 Pages) ASIX

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AX88780

ASIX ELECTRONICS CORPORATION

4.21 RXBTHD1--RX Buffer Threshold1 Register

Offset Address= 0xFC5C

Default = 0x0000_0600

Field

Name

Type

Default

Description

31:11

All 0’s

Reserved

10:0

RXHIGHB

R/W

0x600

RX Remainder Capacity Upper-Bound

This field defines as upper bound of remainder size of RX buffer for pause

operation. If the flow control is enabled, MAC will stop to send pause

frame until the available space of receive buffer is more than this value.

The unit is 16-byte.

4.22 RXFULTHD--RX Buffer Full Threshold Register

Offset Address= 0xFC60

Default = 0x0000_0100

Field

Name

Type

Default

Description

31:11

All 0’s

Reserved

10:0

RXFULB

R/W

0x100

RX Full Threshold

This field defines the least capacity of RX buffer. AX88780 will cause RX

full if it remains capacity less than this value. The unit is 16-byte.

4.23 MISC—Misc. Control Register

Offset Address= 0xFC68

Default = 0x0000_0013

Field

Name

Type

Default

Description

31:6

All 0’s

Reserved

WAKE_LNK

R/W

WAKE-UP by Link-Up Function

If this bit is enabled, MAC will drive wakeup pin whenever there is link-up

occurrence. The polarity of wakeup pin is according to bit0 of CMD

1= enable

0= disable

WAKE_MAG

R/W

WAKE-UP by Magic Packet

If this bit is enabled, MAC will drive wakeup pin whenever there is magic

packet detected by hardware. The polarity of wakeup pin is according to

bit0 of CMD register.

1= enable wake-up by magic packet

0 = disable

3:2

R/W

Reserved

SRST_PHY

R/W

Software Reset Internal PHY

Driver set this bit to ‘0’ to reset internal PHY. The reset duration is

depended on whenever this bit is de-asserted by deriver.

1 = in normal operation

0 = in reset status

SRST_MAC

R/W

Software Reset MAC

Driver set this bit to ‘0’ to reset MAC. The reset duration is depended on

whenever this bit is de-asserted by deriver. After power-on, driver must

activate software reset MAC once before initial other registers.

1 = in normal operation

0 = in reset status

AX88780 Datasheet(PDF) 26 Page - ASIX Electronics Corporation

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