參數(shù)資料
型號： KSZ8993MI
廠商： Micrel Inc
文件頁數(shù)： 47/86頁
文件大?。?/td> 0K
描述： IC SWITCH 10/100 W/TXRX 128PQFP
標準包裝： 66
系列： *
類型： *
應用： *
安裝類型： 表面貼裝
封裝/外殼： 128-BFQFP
供應商設(shè)備封裝： 128-PQFP（14x20）
包裝： 托盤
產(chǎn)品目錄頁面： 1081 (CN2011-ZH PDF)
其它名稱： 576-2124
KSZ8993MI-ND
Micrel, Inc.
KSZ8993M/ML
October 2008
51
M9999-020606
Register 4 (0x04): Global Control 2 (continued)
Bit
Name
R/W
Description
Default
4
Flow control
and back
pressure fair
mode
R/W
= 1, fair mode is selected. In this mode, if a flow
control port and a non-flow control port talk to the
same destination port, packets from the non-flow
control port may be dropped. This is to prevent the
flow control port from being flow controlled for an
extended period of time.
= 0, in this mode, if a flow control port and a non-flow
control port talk to the same destination port, the flow
control port will be flow controlled. This may not be
“fair” to the flow control port.
1
3
No excessive
collision drop
R/W
= 1, the switch will not drop packets when 16 or more
collisions occur.
= 0, the switch will drop packets when 16 or more
collisions occur.
SMAC (pin
69) value
during
reset.
2
Huge packet
support
R/W
= 1, will accept packet sizes up to 1916 bytes
(inclusive). This bit setting will override setting from
bit 1 of the same register.
= 0, the max packet size will be determined by bit 1 of
this register.
0
1
Legal
Maximum
Packet size
check enable
R/W
= 0, will accept packet sizes up to 1536 bytes
(inclusive).
= 1, 1522 bytes for tagged packets, 1518 bytes for
untagged packets. Any packets larger than the
specified value will be dropped.
SMRXD0
(pin 85)
value
during
reset.
0
Priority Buffer
reserve
R/W
= 1, each output queue is pre-allocated 48 buffers,
used exclusively for high priority packets. It is
recommended to enable this when priority queue
feature is turned on.
= 0, no reserved buffers for high priority packets.
1
Register 5 (0x05): Global Control 3
Bit
Name
R/W
Description
Default
7
802.1Q VLAN
enable
R/W
= 1, 802.1Q VLAN mode is turned on. VLAN table
needs to set up before the operation.
= 0, 802.1Q VLAN is disabled.
0
6
IGMP snoop
enable on
Switch MII
interface
R/W
=1, IGMP snoop is enabled.
All the IGMP packets will be forwarded to the Switch
MII port.
=0, IGMP snoop is disabled.
0
5
Reserved
R/W
0
4
Reserved
R/W
0
3-2
Priority
Scheme select
R/W
00 = always deliver high priority packets first
01 = deliver high/low packets at ratio 10/1
10 = deliver high/low packets at ratio 5/1
11 = deliver high/low packets at ratio 2/1
00
1
Reserved
R/W
0
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KSZ8993ML-EVAL 功能描述:以太網(wǎng)開發(fā)工具 KSZ8993ML Evaluation Board RoHS:否 制造商:Micrel 產(chǎn)品:Evaluation Boards 類型:Ethernet Transceivers 工具用于評估:KSZ8873RLL 接口類型:RMII 工作電源電壓:
KSZ8993MLI 功能描述:以太網(wǎng) IC 2+1 Port 10/100 Switch w/Tranceivers & Frame Buffers, 128-Ld PQFP(Lead Free, I-Temp) RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray
KSZ8995FQ 功能描述:以太網(wǎng) IC Integrated 5-Port Switch with Fiber on Port 3 & 4, Lead free RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray
KSZ8995FQ-EVAL 功能描述:以太網(wǎng)開發(fā)工具 Integrated 5-Port Switch with Fiber on Port 3 & 4 Evaluation Board RoHS:否 制造商:Micrel 產(chǎn)品:Evaluation Boards 類型:Ethernet Transceivers 工具用于評估:KSZ8873RLL 接口類型:RMII 工作電源電壓:
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