參數(shù)資料
型號(hào)： KSZ8999I
廠商： Micrel Inc
文件頁(yè)數(shù)： 22/52頁(yè)
文件大?。?/td> 0K
描述： IC SWITCH 9-PORT 10/100 208PQFP
標(biāo)準(zhǔn)包裝： 24
系列： *
類型： *
應(yīng)用： *
安裝類型： 表面貼裝
封裝/外殼： 208-MQFP，208-PQFP
供應(yīng)商設(shè)備封裝： 208-PQFP（28x28）
包裝： 管件
產(chǎn)品目錄頁(yè)面： 1081 (CN2011-ZH PDF)
配用： 576-1644-ND - BOARD EVALUATION FOR KSZ8999
其它名稱： 576-2128
KSZ8999I-ND
January 2005
29
KS8999
Micrel
EEPROM Memory Map
Address
Name
Description
Default
(chip) Value
0
7-0
Signature byte 1. Value = “55”
0x55
1
7-0
Signature byte 2. Value = “99”
0x99
General Control Register
2
7-4
Reserved – set to zero
0000
2
3-2
Priority control scheme (all ports)
00
00 = Transmit all high priority before any low priority
01= Transmit high and low priority at a 10:1 ratio
10 = Transmit high and low priority at a 5:1 ratio
11 = Transmit high and low priority at a 2:1 ratio
2
1
Priority buffer reserve for high priority traffic
0
1 = Reserve 6KB of buffer space for high priority
0 = None reserved
2
0
VLAN enforcement
0
1 = All unicast frames adhere to VLAN configuration
0 = Unicast frames ignore VLAN configuration
Priority Classification Control – 802.1p tag field
3
7
1 = State “111” is high priority
1
0 = State “111” is low priority
3
6
1 = State “110” is high priority
1
0 = State “110” is low priority
3
5
1 = State “101” is high priority
1
0 = State “101” is low priority
3
4
1 = State “100” is high priority
1
0 = State “100” is low priority
3
1 = State “011” is high priority
0
0 = State “011” is low priority
3
2
1 = State “010” is high priority
0
0 = State “010” is low priority
3
1
1 = State “001” is high priority
0
0 = State “001” is low priority
3
0
1 = State “000” is high priority
0
0 = State “000” is low priority
Port 1 Control Register
4
7-6
Reserved – set to zero
00
4
5
TOS priority classification enable for port 1
0
1 = Enable
0 = Disable
4
802.1p priority classification enable for port 1
0
1 = Enable
0 = Disable
4
3
Port based priority classification for port 1
0
1 = High priority
0 = Low priority
4
2
Insert VLAN tags for port 1 if non-existent
0
1 = Enable
0 = Disable
4
1
Strip VLAN tags for port 1 if existent
0
1 = Enable
0 = Disable
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