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MT8977 - ISO-CMOS ST-BUS FAMILY T1/ESF Framer Circuit

Description

The MT8977 is a variant of the MT8976 framer, which has been enhanced to meet ACCUNET® T1.5 wander tolerance (138 UI).

The MT8977 meets ESF and D3/D4 formats, and is compatible with SLC-96 systems.

DS1/ESF digital trunk interfaces Computer to PBX interface

Features

  • D3/D4 or ESF framing and SLC-96 compatible Two frame elastic buffer with jitter tolerance improved to 156 UI Insertion and detection of A, B, C, D bits, signalling freeze, optional debounce Selectable B8ZS, jammed bit (ZCS) or no zero code suppression Yellow alarm and blue alarm signal capabilities Bipolar violation count, FT error count, CRC error count Sel.

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Datasheet Details

Part number MT8977
Manufacturer Mitel Networks Corporation
File Size 344.53 KB
Description ISO-CMOS ST-BUS FAMILY T1/ESF Framer Circuit
Datasheet download datasheet MT8977 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
® ISO-CMOS ST-BUS™ FAMILY MT8977 ® T1/ESF Framer Circuit (ACCUNET T1.5) Preliminary Information Features • • • • • • • • • • • • • • D3/D4 or ESF framing and SLC-96 compatible Two frame elastic buffer with jitter tolerance improved to 156 UI Insertion and detection of A, B, C, D bits, signalling freeze, optional debounce Selectable B8ZS, jammed bit (ZCS) or no zero code suppression Yellow alarm and blue alarm signal capabilities Bipolar violation count, FT error count, CRC error count Selectable robbed bit signalling Frame and superframe sync.
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