參數(shù)資料
型號： KSZ8995MAI
廠商： Micrel Inc
文件頁數(shù)： 43/89頁
文件大小： 0K
描述： IC SWITCH 5-PORT 10/100 128PQFP
標(biāo)準(zhǔn)包裝： 66
系列： *
類型： *
應(yīng)用： *
安裝類型： 表面貼裝
封裝/外殼： 128-BFQFP
供應(yīng)商設(shè)備封裝： 128-PQFP（14x20）
包裝： 托盤
產(chǎn)品目錄頁面： 1081 (CN2011-ZH PDF)
配用： 576-1607-ND - BOARD EVAL EXPERIMENT KSZ8995MA
其它名稱： 576-2126
KSZ8995MAI-ND
Micrel, Inc.
KS8995MA/FQ
October 2011
48
M9999-102611-3.0
Global Registers (Continued)
Address
Name
Description
Mode
Default
Register 2 (0x02): Global Control 0
1
UNH Mode
1, the switch will drop packets with 0x8808 in T/L filed, or DA=01-80-
C2-00-00-01.
0, the switch will drop packets qualified as “flow control” packets.
R/W
0
Link Change Age
1, link change from “l(fā)ink” to “no link” will cause fast aging (<800s) to
age address table faster. After an age cycle is complete, the age logic
will return to normal (300 + 75 seconds ). Note: If any port is
unplugged, all addresses will be automatically aged out.
R/W
0
Address
Name
Description
Mode
Default
Register 3 (0x03): Global Control 1
7
Pass All Frames
1, switch all packets including bad ones. Used solely for debugging
purpose. Works in conjunction with sniffer mode.
R/W
0
6
Reserved
Reserved.
R/W
0
5
IEEE 802.3x Transmit
Flow Control Disable
0, will enable transmit flow control based on AN result.
1, will not enable transmit flow control regardless of AN result.
R/W
Pin PMRXD3
strap option.
Pull-down(0):
Enable Tx
flow control.
Pull-up(1):
Disable Tx/Rx
flow control.
Note:
PMRXD3 has
internal pull-
down.
4
IEEE 802.3x Receive
Flow Control Disable
0, will enable receive flow control based on AN result.
1, will not enable receive flow control regardless of AN result.
Note: Bit 5 and bit 4 default values are controlled by the same pin, but
they can be programmed independently.
R/W
Pin PMRXD3
strap option.
Pull-down (0):
Enable Rx
flow control.
Pull-up (1):
Disable Tx/Rx
flow control.
Note:
PMRXD3 has
internal pull-
down.
3
Frame Length Field
Check
1, will check frame length field in the IEEE packets.
If the actual length does not match, the packet will be dropped (for L/T
<1500) .
R/W
0
2
Aging Enable
1, Enable age function in the chip.
0, Disable aging function.
R/W
Pin LED[5][2]
strap option.
Pull-down (0):
Aging disable
Pull-up (1):
Aging enable.
Note:
LED[5][2] has
internal pull
up.
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