AR8327-AL1A-R datasheet(236/394 Pages) ETC2

236 / 394 page

236 • AR8327/AR8327N Seven-port Gigabit Ethernet Switch

Atheros Communications, Inc.

236 • June 2011

COMPANY CONFIDENTIAL

3.7.60

PORT0_HOL_CTRL0

Address 0x0970

SFT&HW RST

Table 3-211, “Port 0 HOL Control Register 0,” on page 236 summerizes the PORT0_HOL_CTRL0

Table 3-211.

Port 0 HOL Control Register 0

R/O

EGRESS_RATE_EN_6

Enable Port-based rate limit. Rate is set

at EG_PRIO_CIR

Enable Port-based Max burst size also.

Max burst size is set at EG_PRIO_CBS

2:0

R/W

3’h2

EG_TIME_SLOT_6

Egress rate limit time slot control

3'h0? 1/128 ms

3'h1? 1/64 ms

3'h2? 1/32 ms

3'h3? 1/16 ms

3'h4? 1/4 ms

3'h5? 1 ms

3'h6? 10 ms

3'h7? 100 ms

Bit

R/W

Inital

Value

Mnemonic

Description

Bit

R/W

Inital

Value

Mnemonic

Description

31:30

R/O

RESERVED

29:24

R/W

0x2A

EG_PORT_QUEUE_NUM_0

Most buffer can be used for this port.

Buffer number is times of 4.

6'h0: 0

6'h1: no more than 4

6'h2: no more than 8

……

6'h3F: no more than 252

23:20

R/W

0x8

EG_PRI5_QUEUE_NUM_0

See bit [3:0]. This is for priority queue

19:16

R/W

0x8

EG_PRI4_QUEUE_NUM_0

See bit [3:0]. This is for priority queue

15:12

R/W

0x8

EG_PRI3_QUEUE_NUM_0

See bit [3:0]. This is for priority queue

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