参数资料
型号: ZL50418/GKC
厂商: ZARLINK SEMICONDUCTOR INC
元件分类: 网络接口
英文描述: DATACOM, LAN SWITCHING CIRCUIT, PBGA553
封装: 37.50 X 37.50 MM, 2.33 MM HEIGHT, MS-034, HSBGA-553
文件页数: 9/155页
文件大小: 1928K
代理商: ZL50418/GKC
ZL50418
Data Sheet
106
Zarlink Semiconductor Inc.
12.3.5.5
SCAN – SCAN Control Register (default 00)
CPU Address h404
Accessed by CPU (R/W)
SCAN is used when fast learning is enabled (SE_OPMODE bit 0). It is used for setting up the report rate for newly
learned MAC addresses to the CPU.
Examples:
R= 0, Ratio = 0:
All rounds are used for aging. Never scan for new MAC addresses.
R= 0, Ratio = 1:
Aging and scanning in every other aging round
R= 1, Ratio = 7:
In eight rounds, one is used for scanning and seven are used for aging
R= 0, Ratio = 7:
In eight rounds, one is used for aging and seven are used for scanning
12.3.6
(Group 5 Address) Buffer Control/QOS Group
12.3.6.1
FCBAT – FCB Aging Timer
I2C Address h0AA; CPU Address:h500
Accessed by CPU, serial interface and I2C (R/W)
12.3.6.2
QOSC – QOS Control
I2C Address h0AB; CPU Address:h501
Accessed by CPU, serial interface and I2C (R/W)
76
0
RRatio
Bit [6:0]:
Ratio between database scanning and aging round (Default 00)
Bit [7]:
Reverse the ratio between scanning round and aging round (Default 0)
70
FCBAT
Bit [7:0]:
FCB Aging time. Unit of 1ms. (Default FF)
This is for buffer aging control. It is used to configure the buffer aging
time. This function can be enabled/disabled through bootstrap pin. It
is not suggested to use this function for normal operation.
76
5
4
3
1
0
Tos-d
Tos-p
PMCQ
VF1c
L
Bit [0]:
QoS frame lost is OK. Priority will be available for flow control enabled
source only when this bit is set (Default 0)
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