参数资料
型号: KSZ8995MAI
厂商: Micrel Inc
文件页数: 47/89页
文件大小: 0K
描述: IC SWITCH 5-PORT 10/100 128PQFP
标准包装: 66
系列: *
类型: *
应用: *
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: 托盘
产品目录页面: 1081 (CN2011-ZH PDF)
配用: 576-1607-ND - BOARD EVAL EXPERIMENT KSZ8995MA
其它名称: 576-2126
KSZ8995MAI-ND
Micrel, Inc.
KS8995MA/FQ
October 2011
51
M9999-102611-3.0
Global Registers (Continued)
Address
Name
Description
Mode
Default
Register 6 (0x07): Global Control 4
7
Switch MII Back
Pressure Enable
1, enable half-duplex back pressure on switch MII
interface.
0, disable back pressure on switch MII interface.
R/W
0
6
Switch MII Half-Duplex
Mode
1, enable MII interface half-duplex mode.
0, enable MII interface full-duplex mode.
R/W
Pin SMRXD2 strap option.
Pull-down (0): Full-duplex
mode. Pull-up (1): Half-
duplex mode. Note:
SMRXD2 has internal pull-
down.
5
Switch MII Flow
Control Enable
1, enable full-duplex flow control on switch MII interface.
0, disable full-duplex flow control on switch MII interface.
R/W
Pin SMRXD3 strap option.
Pull-down (0): disable flow
control. Pull-up(1): enable
flow control. Note:
SMRXD3 has internal pull-
down.
4
Switch MII 10BT
1, the switch interface is in 10Mbps mode.
0, the switch interface is in 100Mbps mode.
R/W
Pin SMRXD1 strap option.
Pull-down (0): Enable
100Mbps. Pull-up (1):
Enable 10Mpbs.Note:
SMRXD1 has internal pull-
down.
3
Null VID Replacement
1, will replace null VID with port VID (12 bits).
0, no replacement for null VID.
R/W
0
2
0
Broadcast Storm
Protection Rate Bit [10:8]
This along with the next register determines how many
“64 byte blocks” of packet data allowed on an input port
in a preset period. The period is 50ms for 100BT or
500ms for 10BT. The default is 1%.
R/W
000
Address
Name
Description
Mode
Default
Register 7 (0x07): Global Control 5
7
0
Broadcast Storm
Protection Rate Bit [7:0]
This along with the previous register determines how
many “64 byte blocks” of packet data are allowed on an
input port in a preset period. The period is 50ms for
100BT or 500ms for 10BT. The default is 1%.
R/W
0x4A(1)
Address
Name
Description
Mode
Default
Register 8 (0x08): Global Control 6
7
0
Factory Testing
Reserved
R/W
0x24
Address
Name
Description
Mode
Default
Register 9 (0x09): Global Control 7
7
0
Factory Testing
Reserved
R/W
0x28
Note:
148,800 frames/sec × 50ms/interval × 1% = 74 frames/interval (approx.) = 0x4A.
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