DS26528 Datasheet | Maxim Integrated

DESCRIPTION The DS26528 is a single-chip 8-port framer and line interface unit (LIU) bination for T1, E1, and J1 applications. Each port is independently configurable, supporting both long-haul and short-haul lines. FEATURES - - - Eight plete T1, E1, or J1 Long-Haul/Short Haul Transceivers (LIU plus Framer) Independent T1, E1, or J1 Selections for Each Transceiver Internal Software-Selectable Transmit- and Receive-Side Termination for 100W T1 Twisted Pair, 110W J1 Twisted Pair, 120W E1 Twisted Pair, and 75W E1 Coaxial Applications Crystal-Less Jitter Attenuators can be Selected for Transmit or Receive Path. The Jitter Attenuator meets ETSI CTR 12/13, ITU 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 -2.5d B to -36d B in T1 Mode and -2.5d B to -44d B in E1 Mode in Approximate 2.5d B Increments Transmit Open and Short Circuit Detection LIU LOS in Accordance with G.775, ETSI 300233, 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 APPLICATIONS Routers Channel Service Units (CSUs) Data Service Units (DSUs) Muxes Switches Channel Banks T1/E1 Test Equipment - - FUNCTIONAL DIAGRAM T1/E1/J1 NETWORK - - - - - - - - - - T1/J1/E1 Transceiver x8 BACKPLANE Features continued in Section 2. ORDERING INFORMATION PART DS26528 TEMP RANGE -40°C to +85°C PIN-PACKAGE 256 TE-CSBGA Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be simultaneously available through various sales channels. For information about device errata, click here: .maxim-ic./errata. 1 of 269 REV:...