AR8327-AL1A-R datasheet(304/394 Pages) ETC2

304 / 394 page

304 • AR8327/AR8327N Seven-port Gigabit Ethernet Switch

Atheros Communications, Inc.

304 • June 2011

COMPANY CONFIDENTIAL

Table 3-302.

Port 1 Ingress Rate Limit Control Register 0

3.7.152 PORT1_ING_RATE_CTRL1

Address 0x0B14

SFT&HW RST

Table 3-303, “Port 1 Ingress Rate Limit Control Register 1,” on page 304 summerizes the

PORT1_ING_RATE_CTRL1 Register 1

Table 3-303.

Port 1 Ingress Rate Limit Control Register 1

Bit

R/W

Inital

Value

Mnemonic

Description

31:24

R/W

'h18

ADD_RATE_BYTE_1

Byte number should be added to frame

when calculate rate limit.

Default is 24 bytes for IPG, preamble,

crc and SFD.

23:22

R/W

2'b01

ING_RATE_C_TIME_SLOT_1

Committed 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.

R/O

RESERVED

R/W

ING_RATE_MODE_1

1: one two-rate three-color

0: two single rate

19:18

R/O

RESERVED

17:15

R/W

ING_CBS_1

Committed burst size for ingress rate

limit

14:0

R/W

0x7FFF

ING_CIR_1

Committed Ingress Rate Limit for all

priority.

Rate is limited to times of 32kbps.

Default 15'h7FFF is for disable rate

limit for egress priority 2. if these bits

are set to 15'h0, no frame should be

received in from this port.

Bit

R/W

Inital

Value

Mnemonic

Description

31:24

R/O

RESERVED

R/W

ING_BORROW_EN_1

Borrow enable

R/W

ING_RATE_UNIT_1

1: Packets/ 0: bytes

R/W

ING_CF_1

Coupling flagfor ingress rate limit

R/W

ING_CM_1

Color mode for ingress rate limit

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