DS26528G DS26528 Telecom Interface ICs 8-Port E1/T1/J1 Transceiver

Details

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FEATURES

Eight Complete T1, E1, or J1 Long-Haul/ShortHaul Transceivers (LIU plus Framer)

Independent T1, E1, or J1 Selections for Each Transceiver

Internal Software-Selectable Transmit- and Receive-Side Termination for 100Ω T1 Twisted

Pair, 110Ω J1 Twisted Pair, 120Ω E1 Twisted Pair, and 75Ω E1 Coaxial Applications

Crystal-Less Jitter Attenuator can be Selected for Transmit or Receive Path; Jitter Attenuator Meets ETS CTR 12/13, ITU-T G.736, G.742,G.823, and AT&T Pub 62411

External Master Clock can be Multiple of 2.048MHz or 1.544MHz for T1/J1 or E1

Operation; This Clock is Internally Adapted for T1 or E1 Usage in the Host Mode

Receive-Signal Level Indication from -2.5dB to-36dB in T1 Mode and -2.5dB to -44dB in E1

Mode in Approximate 2.5dB Increments

Transmit Open- and Short-Circuit Detection

LIU LOS in Accordance with G.775, ETS 300 233, and T1.231

Transmit Synchronizer

Flexible Signaling Extraction and Insertion Using Either the System Interface or

Microprocessor Port

Alarm Detection and Insertion

T1 Framing Formats of D4, SLC-96, and ESF

J1 Support

E1 G.704 and CRC-4 Multiframe

T1-to-E1 Conversion