AR8327-AL1A-R datasheet(302/394 Pages) ETC2

302 / 394 page

302 • AR8327/AR8327N Seven-port Gigabit Ethernet Switch

Atheros Communications, Inc.

302 • June 2011

COMPANY CONFIDENTIAL

3.7.149 PORT0_ING_RATE_CTRL1

Address 0x0B04

SFT&HW RST

Table 3-300, “Port 0 Ingress Rate Limit Control Register 1,” on page 302 Port 0 Ingress Rate Limit

Controlsummerizes the Register 1

Table 3-300.

Port 0 Ingress Rate Limit Control Register 1

3.7.150 PORT0_ING_RATE_CTRL2

Address 0x0B08

SFT&HW RST

Table 3-301, “Port 0 Ingress Rate Limit Control Register 2,” on page 303 summerizes the

PORT0_ING_RATE_CTRL2 Register 2

Bit

R/W

Inital

Value

Mnemonic

Description

31:24

R/O

RESERVED

R/W

ING_BORROW_EN_0

Borrow enable

R/W

ING_RATE_UNIT_0

1: Packets/ 0: bytes

R/W

ING_CF_0

Coupling flag for ingress rate limit

R/W

ING_CM_0

Color mode for ingress rate limit

19:18

R/W

2'b01

ING_RATE_E_TIME_SLOT_0

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_0

Excess burst size for ingress rate limit

14:0

R/W

0x7FFF

ING_EIR_0

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.

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