AR8327-AL1A-R datasheet(250/394 Pages) ETC2

250 / 394 page

250 • AR8327/AR8327N Seven-port Gigabit Ethernet Switch

Atheros Communications, Inc.

250 • June 2011

COMPANY CONFIDENTIAL

3.7.74

PORT0_FLOW_THD

Address 0x09B0

SFT&HW RST

Table 3-225, “Port 0 Flow Control Threshold Control Register,” on page 250 summerizes the

PORT0_FLOW_THD Register

Table 3-225.

Port 0 Flow Control Threshold Control Register

3.7.75

PORT1_FLOW_THD

Address 0x09B4

SFT&HW RST

Table 3-226, “Port 1 Flow Control Threshold Control Register,” on page 251 summerizes the

PORT1_FLOW_THD Register

5:4

R/O

RESERVED

3:0

R/W

4'h6

ING_BUF_NUM_6

Buffer number is times of 4.

4'h0: 0

4'h1: no more than 4

4'h2: no more than 8

……

4'hF: no more than 60

Bit

R/W

Inital

Value

Mnemonic

Description

Bit

R/W

Inital

Value

Mnemonic

Description

31:24

R/O

RESERVED

23:16

R/W

'h3A

PORT_XON_THRES_0

Port base transmit on threshold. When

block memory used by one port less

than this value, mac would send out

pause off frame, and link partner will

start transmit frame out.

15:8

R/O

RESERVED

7:0

R/W

'h4A

PORT_XOFF_THRES_0

Port base transmit off threshold. When

block memory used by one port more

than this value, mac would send out

pause on frame, and link partner will

stop transmit frame out.

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