Renesas 82P2916BFG8

Overview

82P2916BFG8 from IDT is a 16-channel high-density T1/E1/J1 line interface unit (LIU) designed for carrier-grade access and aggregation equipment. It integrates full receive and transmit paths per channel, supports differential and single-ended line interfaces, delivers jitter attenuation (RJA/TJA), and operates across all three standards with programmable waveform shaping - deployed in multi-service access platforms handling DS1, E1, and J1 trunking.

For engineers reviewing the 82P2916BFG8 datasheet, 82P2916BFG8 pinout, 82P2916BFG8 application, or 82P2916BFG8 equivalent, key selection considerations include per-channel LOS/AIS detection, dual-loopback capability (analog/remote/digital), G.772-compliant channel-0 monitoring, REFA/REFB clock synthesis modes, and JTAG boundary-scan compliance for production testability.

Technical Context

The 82P2916BFG8 implements independent T1/E1/J1 mode selection per channel via register configuration, with dedicated equalizer and slicer stages per receiver path and programmable transmit waveform templates for cable lengths up to 655 ft (T1) or 75/120 Ω impedance (E1). Its jitter attenuator provides both receive (RJA) and transmit (TJA) jitter cleanup with specified filtering bandwidths.

It features dual clock outputs (CLKT1/CLKE1) supporting free-run or recovered modes, REFA/REFB outputs configurable as synthesized, free-run, or externally driven, and a serial microprocessor interface (SPI/I²C-compatible) with global and per-channel register maps. Interrupt generation covers BPV, EXZ, LOS, AIS, and loopback status per channel.

Key Specifications

Pinout & Package

82P2916BFG8 is housed in a 484-pin FPBGA package (0.8 mm pitch, 23 mm × 23 mm) with thermal pad exposed on underside. Pin assignments follow JEDEC MO-275AC standard layout; ball grid includes dedicated power/ground banks, differential I/O pairs for TTIP/TRING and RTIP/RRING, clock inputs (MCLK, XCLK), reference outputs (REFA, REFB), and serial interface signals (SDA/SCL or SDO/SDI/SCLK/CS).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar line interface unit applications.

Compared with 82P2916BFG8, the 82P2912BFG8 offers identical per-channel performance and diagnostics in an 8-channel footprint, while the Si53302-A-GM serves a strictly clock-conditioning role and cannot replace line interface functions - making it a companion, not alternative.

Availability

82P2916BFG8 is available at Aetrix Electronics and suitable for multi-service access platforms, central office line cards, and integrated digital loop carrier systems requiring stable component supply, long-term lifecycle support, and carrier-grade reliability.

Supply support for 82P2916BFG8 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

IDT (Integrated Device Technology, Inc.) is a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance interconnect solutions, acquired by Renesas Electronics in 2019.

The 82P2916BFG8 belongs to IDT's legacy T1/E1/J1 line interface portfolio, engineered for carrier-class telecom infrastructure demanding low-jitter, high-integration, and comprehensive diagnostics in compact form factors.

FAQ

What is the primary function of the 82P2916BFG8 in telecom systems?

The 82P2916BFG8 serves as a 16-channel T1/E1/J1 line interface unit that performs physical layer signal conditioning - including receive equalization, transmit waveform shaping, clock recovery, jitter attenuation, and comprehensive diagnostics like BPV, EXZ, and LOS detection. It enables direct connection of twisted-pair or coaxial lines to digital backplanes in MSAPs and central office equipment, and the 82P2916BFG8 is fully compliant with GR-499-CORE and ITU-T G.703/G.772 standards.

Does the 82P2916BFG8 support both T1 and E1 standards simultaneously?

Yes, the 82P2916BFG8 supports concurrent T1, E1, and J1 operation - each of its 16 channels can be independently configured for any one of the three standards via register programming. This allows mixed-standard line cards, such as eight T1 and eight E1 ports on a single 82P2916BFG8-based board, with no hardware reconfiguration required.

How does the 82P2916BFG8 handle jitter in T1/E1 links?

The 82P2916BFG8 incorporates dual-stage jitter attenuation: Receive Jitter Attenuator (RJA) cleans incoming line jitter before clock/data recovery, and Transmit Jitter Attenuator (TJA) filters jitter generated internally prior to line driving. Both meet stringent ITU-T G.823/G.824 masks, delivering ≤1.5 UI (RJA) and ≤0.75 UI (TJA) residual jitter in the 12 kHz–20 MHz band - critical for maintaining BER <10⁻¹⁰ in long-haul T1/E1 deployments.

What diagnostic capabilities does the 82P2916BFG8 provide per channel?

The 82P2916BFG8 delivers full per-channel diagnostics including bipolar violation (BPV) and code violation (CV) detection, excessive zeroes (EXZ) monitoring, loss-of-signal (LLOS/SLOS/TLOS) classification, alarm indication signal (AIS) detection and generation, and PRBS/QRSS/ARB pattern generation and detection. All are accessible via serial interface registers, and the 82P2916BFG8 supports automatic error counter updating with interrupt assertion on threshold exceedance.

Is the 82P2916BFG8 pin-compatible with earlier IDT LIUs like the 82P2910?

No, the 82P2916BFG8 is not pin-compatible with the 82P2910 or other predecessors. It uses a 484-ball FPBGA package with updated power distribution, enhanced thermal pad design, and reorganized I/O banks to support higher channel density and new features like G.772 monitoring and dual-loopback. Migration requires PCB redesign, though register-level compatibility simplifies firmware adaptation - the 82P2916BFG8 retains backward-compatible configuration sequences for core LIU functions.