参数资料
型号: KSZ8842-16MQL
厂商: Micrel Inc
文件页数: 116/141页
文件大小: 0K
描述: IC SWITCH 10/100 16BIT 128PQFP
标准包装: 66
控制器类型: 以太网开关控制器
接口: PCI
电源电压: 3.1 V ~ 3.5 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 128-BFQFP
供应商设备封装: 128-PQFP(14x20)
包装: 管件
产品目录页面: 1081 (CN2011-ZH PDF)
配用: 576-1634-ND - BOARD EVALUATION KSZ8842-16MQL
其它名称: 576-1478-5
Micrel, Inc.
KSZ8842-16/32 MQL/MVL/MVLI/MBL
October 2007
76
M9999-102207-1.9
Bank 32 Switch Global Control Register 3 (0x06): SGCR3
This register contains the global control for the switch function.
Bit
Default
R/W
Description
15-8
0x63
RW
Broadcast Storm Protection Rate Bit [7:0]
These bits, along with SGCR3[2:0], determine how many 64-byte blocks of packet
data are allowed on an input port in a preset period. The period is 67ms for 100BT or
670ms for 10BT. The default is 1%.
7
0
RW
Repeater Mode (Note 1)
1 = enable repeater mode.
0 = normal mode.
The switch supports only half duplex , 100BT in repeater mode.
6
0
RW
Switch Host Half-Duplex Mode
The KSZ8842M supports only half-duplex 100-BaseT throughput in repeater mode.
1 = enable host port interface half-duplex mode, this bit must be set for repeater mode
0 = enable host port interface full-duplex mode..
5
0
RW
Switch Flow Control Enable
1 = enable full-duplex flow control on Switch Host port.
0 = disable full-duplex flow control on Switch Host port
4
0
RW
Reserved
3
0
RW
Null VID Replacement
1 = replaces NULL VID with port VID(12 bits).
0 = no replacement for NULL VID.
2-0
0x0
RW
Broadcast Storm Protection Rate Bit [10:8]
These bits, along with SGCR3[15:8] determine how many 64-byte blocks of packet
data are allowed on an input port in a preset period. The period is 67ms for 100BT or
670ms for 10BT. The default is 1%.
Rate: 148,800 frames/sec * 67 ms/interval * 1% = 99 frames/interval (approx.) = 0x63.
Note 1: User has to set bit 13 (100Mbps), bit 12 (auto-negotiation disabled) and bit 8 (half duplex) in both P1MBCR and
P2MBCR registers for repeater mode.
Bank 32 Switch Global Control Register 4 (0x08): SGCR4
This register contains the global control for the switch function.
Bit
Default
R/W
Description
15-0
0x2400
RW
Reserved
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