CS61884 Datasheet | Cirrus Logic

Features Industry Standard Footprint Octal E1/T1/J1 Short-haul Line Interface Unit Low Power No External ponent Changes for 100 Ω/120 Ω/75 Ω Operation Pulse Shapes can be customized by the user Internal AMI, B8ZS, or HDB3 Encoding/Decoding LOS Detection per T1.231, ITU G.775, 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 (<50m A) TX Drivers with Fast High-Z and Power Down JTAG Boundary Scan pliant to IEEE 1149.1 144-Pin LQFP or 160-Pin BGA Package ORDERING INFORMATION CS61884-IQ CS61884-IB 144-pin LQFP 160-pin FBGA Description The CS61884 is a full-featured Octal E1/T1/J1 shorthaul LIU that supports both 1.544 Mbps or 2.048 Mbps data transmission. Each channel provides crystal-less jitter attenuation that plies with the most stringent standards. Each channel also provides internal AMI/B8ZS/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. The CS61884 makes use of ultra low power matched impedance transmitters and receivers to reduce power beyond that achieved by traditional driver designs. By achieving a more precise line match, this technique also provides superior return loss characteristics. Additionally, the internal line matching circuitry reduces the external ponent count. All transmitters have controls for independent power down and High-Z. Each receiver provides reliable data recovery with over 12 d B of cable attenuation. The receiver also incorporates LOS detection pliant to the most recent specifications. Note: Click on any text in blue to go to cross-references. LOS RCLK RPOS RNEG TCLK TPOS TNEG JTAG Serial Port 000000000000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000000000000...