Description

The CS61880 is a full-featured Octal E1 short-haul LIU that supports 2.048 Mbps data transmission for both E1 75 Ω and E1 120 Ω applications. Each channel provides crystal-less jitter attenuation that complies with the most stringent standards. Each channel also provides internal AMI/HDB3 encoding/decoding. To support enhanced system diagnostics, channel zero can be configured for G.772 non-intrusive monitoring of any of the other 7 channels’ receive or transmit paths.

Features

■ Octal E1 Short-haul Line Interface Unit

■ Low Power

■ No External Component Changes for 120 Ω / 75 Ω Operation

■ Pulse Shapes can be customized by the user

■ Internal AMI, or HDB3 Encoding/Decoding

■ LOS Detection per ITU G.775 or ETSI 300- 233

■ G.772 Non-Intrusive Monitoring

■ G.703 BITS Clock Recovery

■ Crystal-less Jitter Attenuation

■ Serial/Parallel Microprocessor Control Interfaces

■ Transmitter Short Circuit Current Limiter (<50 mA)

■ TX Drivers with Fast High-Z and Power Down

■ JTAG Boundary Scan compliant to IEEE 1149.1

■ 144-Pin LQFP or 160-Pin FBGA Package