參數(shù)資料
型號(hào)： 9863
廠商： Intel Corp.
英文描述： Advanced 10/100 Umnmanaged Repeater
中文描述： 高級(jí)10/100 Umnmanaged直放站
文件頁(yè)數(shù)： 41/56頁(yè)
文件大小： 719K
代理商： 9863
Advanced 10/100 Unmanaged Repeater
—
LXT9883/9863
Datasheet
Document #: 249115
Revision #: 003
Rev. Date: 08/07/01
41
4.3
Inter-Repeater Backplane Compatibility
The Inter-repeater Backplane (IRB) comprises two parts:
Local
—
the backplane between cascaded devices on the same board.
Stack
—
the backplane between multiple boards.
Each of these backplanes consists of both analog and digital signals.
4.3.1
Local Backplane
—
3.3V Only
The LXT98x3 local backplane operates at 3.3V only. LXT98x and LXT91x devices operate at 5V.
LXT98x3 devices are, therefore, not cascadable with LXT98x and LXT91x devices.
Note:
Do not mix LXT98x3 with either LXT98x or LXT91x devices on the local backplanes.
4.3.2
Stack Backplane
—
3.3V or 5V
The LXT98x3 stack backplanes can be configured to be either 3.3V or 5V. COMP_SEL (Pin 39), a
special input pin, selects between the two voltage modes, depending on whether 3.3V or 5V is
applied.
4.3.2.1
3.3V-Only Stacks
Apply 3.3V to COMP_SEL, IR100CFSBP, IR10CFSBP, and IR10COLBP for LXT98x3 backplane
operation
4.3.2.2
For 5V Backwards Stackability
Apply 5V to COMP_SEL, IR100CFSBP, IR10CFSBP, and IR10COLBP for LXT98x and LXT91x
backplane operation.
Note:
With either mode (3.3V or 5V), COMP_SEL draws less than 3 mA.
1. The external pull-up resistor values remain the same, regardless of 3.3V or 5V backplane
operation.
2. The recommended digital signal external buffer has been changed to 74LVT245 for the
LXT98x3.
4.3.2.3
3.3V and 5.0V Stacking Boards Cannot Be Mixed
4.3.2.3.1
3.3V Operation
Boards designed for 3.3V backplane operation should only be stacked with other 3.3V boards.
Existing LXT98x or LXT91x based designs cannot operate in 3.3V.
4.3.2.3.2
Incompatible Stacking Configurations
The following stacking configurations are incompatible:
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9863.2100 功能描述:安裝硬件 TRANSIPILLAR TPI/ 16.0/32.0/M6/S-S RoHS:否 制造商:Harwin 類型:SMT Cable Clip 材料:Phosphor Bronze 安裝孔大小: 長(zhǎng)度:5 mm 外徑: 內(nèi)徑: 厚度: 電鍍:Tin 螺紋大小:
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