參數(shù)資料
型號: LXT980AHC
英文描述: LAN HUB CONTROLLER
中文描述: 局域網(wǎng)集線器控制器
文件頁數(shù): 57/96頁
文件大?。?/td> 1309K
代理商: LXT980AHC
LXT980/980A Dual-Speed, 5-Port Fast Ethernet Repeater
Datasheet
57
Figure 22. Typical 100 Mbps IRB Implementation
Figure 23. Typical 10 Mbps IRB Implementation
LXT980
Chip ID 1
LXT980
Chip ID 2
+5V
240
1%
120
IR100DV\
IR100DEN\
IR100DAT <4:0>
IR100CFS\
IR100SNGL
IR100COL\
245
IR100DATBP
IR100DVBP\
DIR
ENA
IR100CLKBP
A
B
LXT980
Chip ID 0
IR100CFSBP\
IR100DEN\
ISOLATE
91
1%*
+5V
330
IR100CLK
IR100DAT
IR100DV\
Stack or
Segment
Connector
I
+5V
91
91
2
1
+5V
1 k
+5V
1 k
1. In stacked configurations, all devices with ChipID = 0 are tied together at IR100CFSBP. The entire stack
must be pulled up by only one resistor per signal. Pull-up resistor is installed in the base board only.
2. All devices with ChipID
0 require individual pull-up resistors at IR100CFSBP.
3. 91
resistors provide gresater noise immunity. Systems using 91
resistors are backwards stackable
with systems using 100
resistors.
LXT980
Chip ID 1
LXT980
Chip ID 2
+5V
680
1%
330
IR10ENA\
IR10DEN\
IR10DAT
IR10CFS\
HOLDCOL
IR10COL\
IR10CLK
245
IR10DATBP
IR10ENABP\
DIR
ENA
IR10CLKBP
A
B
LXT980
Chip ID 0
IR10COLBP\
IR10CFSBP\
IR10DEN\
ISOLATE
330
1%
330
1%
+5V
330
IR10CLK
IR10DAT
IR10ENA\
I
I
I
I
+5V
330
330
330
330
Stack or
Segment
Connector
2
1
1. In stacked configurations, all devices with ChipID = 0 are tied together at IR100CFSBP and IR10CFSBP. The entire
stack must be pulled up by only one resistor per signal. Pull-up resistor is installed in the base board only.
2. All devices with ChipID
0 require individual pull-up resistors at IR100CFSBP and IR10CFSBP.
相關PDF資料
PDF描述
LXT980QC LAN HUB CONTROLLER
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