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CBTU0808

更新时间: 2024-11-16 03:24:55
品牌 Logo 应用领域
恩智浦 - NXP 复用器PC
页数 文件大小 规格书
16页 92K
描述
Dual lane PCI Express port multiplexer

CBTU0808 数据手册

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CBTU0808  
Dual lane PCI Express port multiplexer  
Rev. 01 — 2 June 2006  
Product data sheet  
1. General description  
The CBTU0808 is a dual lane port multiplexer designed to provide convenient and reliable  
path switching for PCI Express signals. It is organized as two PCI Express lanes, each  
consisting of a Transmit and Receive channel. Each channel has four ports, two (A and B)  
on the source (or host) side and two (A and B) on the destination (or device) side. Each  
port provides a pair of signal lines to support PCIe differential signaling.  
Using specially designed high-bandwidth and high off-isolation switch elements, source  
and destination ports can be connected or isolated in three possible configurations:  
source A and B to destinations A and B respectively; or source A to destination B  
(remaining ports isolated), or all ports isolated.  
The switch elements are controlled by internal control logic to set switch positions in  
accordance with these three configurations, selectable by CMOS inputs CTRL0 and  
CTRL1 for lanes 0 and 1 respectively. Within a lane, the switch configuration is always  
applied identically to both transmit and receive channels.  
The CBTU0808 is packaged in a 48-ball, depopulated 9 × 9 grid, 0.5 mm ball pitch, thin  
profile fine-pitch ball grid array (TFBGA) package, which (while requiring a minimum  
5 mm × 5 mm of board space) allows for adequate signal routing and escape using  
conventional board technology.  
2. Features  
I 2-lane wide PCI Express port multiplexer  
I One transmit and one receive differential channel per lane  
I Four ports per channel  
I PCI Express signaling compliant  
I High bandwidth: > 1 GHz  
I Low OFF-feedthrough of < 35 dB at 1.25 GHz  
I Low channel crosstalk of < 35 dB at 1.25 GHz  
I Designed to match characteristic impedance of PCIe signaling environment  
I Single 1.8 V supply operation  
I ESD resilience of 2 kV HBM  
I Available in 48-ball, 5 mm × 5 mm, 0.5 mm ball pitch TFBGA package, Pb-free/Green  
3. Applications  
I High-performance computing applications  
I Port switching and docking applications  

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