Renesas 82P2828BHG

Overview

82P2828BHG from Integrated Device Technology (IDT) is a 28(+1)-channel high-density T1/E1/J1 line interface unit (LIU) designed for carrier-grade access equipment. It integrates full receive and transmit paths per channel, jitter attenuation (RJA/TJA), PRBS/QRSS pattern generation/detection, and dual-loopback diagnostics. Key confirmed specs include 28 active data channels + 1 monitor channel, support for T1 (1.544 Mbps), E1 (2.048 Mbps), and J1 (1.544 Mbps) standards, and operation at 3.3 V core supply with 1.8 V I/O.

For engineers reviewing the 82P2828BHG datasheet, 82P2828BHG pinout, 82P2828BHG application, or 82P2828BHG equivalent, this device serves as a single-chip solution for multi-channel TDM line card designs requiring integrated clock recovery, programmable waveform shaping, bipolar violation detection, and hitless protection switching in telecom infrastructure.

Technical Context

The 82P2828BHG implements independent per-channel receive equalization, slicer, clock/data recovery, and HDB3/AMI decoding - supporting both T1 and E1 framing with selectable line impedance (75 Ω or 120 Ω). Its transmit path includes user-programmable arbitrary waveform shaping, preset templates for T1/E1/J1 distances up to 655 ft, and over-current protection on TTIP/TRING outputs.

It features dual jitter attenuators (RJA and TJA), G.772-compliant channel-0 monitoring, and a flexible microprocessor interface supporting serial, parallel Motorola, and parallel Intel modes. Clock architecture supports cascaded recovered clocks, free-running CLKT1/CLKE1 outputs, and REFA/REFB synthesis with LOS fallback behavior.

Key Specifications

Pinout & Package

82P2828BHG is housed in a 640-pin plastic ball grid array (PBGA) package with 25 × 25 mm body size and 1.0 mm ball pitch. The package supports high-density routing and thermal dissipation via exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX5865 and TI CDCE62005, the 82P2828BHG delivers full T1/E1/J1 protocol support, integrated jitter attenuation, and comprehensive diagnostics in a single package - making it uniquely suited for high-density, carrier-grade line cards requiring minimal external components and maximum field serviceability.

Availability

82P2828BHG is available at Aetrix Electronics and suitable for DSLAM line cards, wireless backhaul multiplexers, enterprise PBX gateways, and network test equipment requiring stable component supply and long-term lifecycle support.

Supply support for 82P2828BHG 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

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

The IDT82P2828 family was engineered for carrier-class TDM infrastructure, targeting multi-channel line cards in central office, metro, and access network equipment where reliability, jitter performance, and diagnostic capability are critical.

FAQ

What is the channel count and monitoring capability of the 82P2828BHG?

The 82P2828BHG provides 28 active T1/E1/J1 data channels plus one dedicated monitor channel (Channel 0) supporting G.772-compliant jitter measurement and real-time spectral analysis. This monitor channel operates independently and does not carry user traffic, enabling continuous line health assessment without impacting throughput. All 28 data channels support full receive/transmit functionality including BPV detection, AIS generation, and PRBS testing.

Does the 82P2828BHG support both T1 and E1 standards simultaneously?

Yes, the 82P2828BHG supports T1 (1.544 Mbps), E1 (2.048 Mbps), and J1 (1.544 Mbps) standards on a per-channel basis. Mode selection is configured via register settings and can be mixed across channels - for example, some channels may operate in T1 mode while others run E1. Each channel's receiver and transmitter are independently programmable for framing, line impedance, and waveform template selection.

How does the 82P2828BHG handle jitter attenuation?

The 82P2828BHG implements two independent jitter attenuators: RJA (Receive Jitter Attenuator) and TJA (Transmit Jitter Attenuator), both meeting GR-499-CORE mask requirements. RJA cleans incoming line jitter before clock recovery; TJA filters jitter introduced by the transmit path. Typical attenuation is 20 dB (RJA) and 15 dB (TJA) at 15.36 kHz, with programmable bandwidth and holdover behavior during LOS conditions.

What diagnostic features are integrated into the 82P2828BHG?

The 82P2828BHG includes comprehensive diagnostics: per-channel BPV/CV/EXZ/LOS/AIS detection and insertion; PRBS, QRSS, ARB, and IB pattern generation and detection; manual and automatic error counters; and four loopback modes (analog, digital, remote, dual). These features enable full link validation, fault isolation, and real-time performance monitoring without external test gear.

What microprocessor interfaces does the 82P2828BHG support?

The 82P2828BHG supports three configurable microprocessor interfaces: serial (SPI-compatible 4-wire), parallel Motorola non-multiplexed, and parallel Intel non-multiplexed. Timing specifications for all modes are provided in the datasheet, including read/write cycle parameters and setup/hold requirements. Interface selection is controlled via hardware pins at power-up.