BCM84142数据手册Broadcom中文资料规格书

描述 Description

Serializer/deserializer (SerDes) Framer Interface Level 5 (SFI-5.1) to 2 x 23 Gb/s multiplexer for use in 300-pin MSA 40 Gb/s modules for DQPSK applications. The BCM84142 has an OIF-SFI-5.1-compliant, 16-bit wide receive system data interface with a deskew channel operating from 2.688 Gb/s to 2.85 Gb/s that multiplexes and precodes the data to dual (I & Q) Differential Quadrature Phase Shift Keying (DQPSK) transmitters (operating from 21.25 Gb/s to 22.8 Gb/s). There is an additional deskew lane for the SFI-5.1 interface. The multiplexer and precoders are fully integrated and accept SFI-5.1 data along with a deskew channel copying data sequentially from each data channel. The two-bit data is precoded with a DQPSK precoder. The SFI-5.1 timing clock is generated from the recovered clock. The extracted data can be fed to a PRBS decoder.

特性 Features

·Data rate support from 21.5 Gb/s to 22.8 Gb/s
·Differential I and Q channels
·Programmable preemphasis on I and Q channels
·Programmable amplitude control
·Core power supply: 1.0V