AR8327-AL1A-R datasheet(310/394 Pages) ETC2

310 / 394 page

310 • AR8327/AR8327N Seven-port Gigabit Ethernet Switch

Atheros Communications, Inc.

310 • June 2011

COMPANY CONFIDENTIAL

Table 3-309.

Port 3 Ingress Rate Limit Control Register 1

3.7.159 PORT3_ING_RATE_CTRL2

Address 0x0B38

SFT&HW RST

Table 3-310, “Port 3 Ingress Rate Limit Control Register 2,” on page 310 summerizes the

PORT3_ING_RATE_CTRL2 Register 2

Table 3-310.

Port 3 Ingress Rate Limit Control Register 2

Bit

R/W

Inital

Value

Mnemonic

Description

31:24

R/O

RESERVED

R/W

ING_BORROW_EN_3

Borrow enable

R/W

ING_RATE_UNIT_3

1: Packets/ 0: bytes

R/W

ING_CF_3

Coupling flagfor ingress rate limit

R/W

ING_CM_3

Color mode for ingress rate limit

19:18

R/W

2'b01

ING_RATE_E_TIME_SLOT_3

Excess Ingress rate limit control timer

slot.

2'b00: 100us;

2'b01: 1ms

2'b10: 10ms

2'b11: 100ms

Notes: if port rate limit set to less than

96kbps, don't select 100us as time slot.

17:15

R/W

ING_EBS_3

Excess burst size for ingress rate limit

14:0

R/W

0x7FFF

ING_EIR_3

Excess Ingress Rate Limit for all

priority.

Rate is limited to times of 32kbps.

Default 15'h7FFF is for disable rate

limit for ingress. if these bits are set to

15'h0, no frame should be received in

from this port.

Bit

R/W

Inital

Value

Mnemonic

Description

31:16

R/O

RESERVED

R/W

ING_C_MULTI_RATE_EN_3

Ingress committed rate limit enable to

count the multicast frames

R/W

ING_C_UNI_RATE_EN_3

Ingress committed rate limit enable to

count the unicast frames

R/W

ING_C_UNK_MULTI_RATE_EN_

Ingress committed rate limit enable to

count the unknown multicast frames

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