The CS61884 is a full-featured, octal, E1/T1/J1 short-haul line interface unit that supports both 1.544 Mbps or 2.048 Mbps data transmission. Each channel provides crystal-less jitter attenuation that complies 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 the receive or transmit paths for any of the seven channels.
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 component count. All transmitters have controls for independent power down and High-Z.
Each receiver provides reliable data recovery with over 12 dB of cable attenuation. The receiver also incorporates loss-of-signal (LOS) detection that is compliant to the most recent specifications.
| Part | Power Supply (V) | Control Modes | Line Coders | Number of Channels | TBR-12 Compliant | Impedance Matching Line Driver | Arbitrary Waveform Option |  Package |
|---|---|---|---|---|---|---|---|---|
| CS61884 | 3.3 | Host & H/W | AMI, HDB3 & B8ZS | 8 | |
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144 LQFP 160 FBGA |
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