Renesas TW5866-BA2-CR

Overview

TW5866-BA2-CR from Intersil is an integrated H.264 video codec IC with 8-channel analog A/V decoders, supporting up to 9D1 (225 fps PAL / 270 fps NTSC) H.264 encoding, 8D1 decoding, and full-duplex 4D1 operation. It features dual BT.656/BT.1120 digital interfaces, PCI host interface, DDR2 memory controller, and on-chip motion JPEG encoder - deployed in embedded DVRs and low-cost PCI-based video capture cards.

For engineers reviewing the TW5866-BA2-CR datasheet, TW5866-BA2-CR pinout, TW5866-BA2-CR application, or TW5866-BA2-CR equivalent, key selection considerations include its 416-ball BGA package, per-channel motion detection (16×12 cells), triple independent scalers, H.264 Baseline Profile Level 3 compliance, and support for 8 CVBS + 2×BT.656 + 2×BT.1120 concurrent video inputs.

Technical Context

The TW5866-BA2-CR implements a multi-path video processing architecture: analog CVBS signals pass through 8 independent 10-bit ADCs and adaptive 4H comb filters before H.264/MJPEG encoding; digital BT.656/BT.1120 inputs feed directly into the same encoder pipeline. Its PCI interface operates at 33/66 MHz as both initiator and target, enabling CPU access to per-MB motion metadata and channel-level analytics.

Video preprocessing includes per-channel triple scalers (for H.264 encode, MJPEG, and PCI preview), motion-adaptive 2D de-interlacing, and 2D noise reduction. The H.264 encoder supports dual-bitstream output (main + sub-stream), VBR/CBR control, GOP configuration, and in-loop deblocking - all while maintaining baseline profile Level 3 compliance with bit rates from 64 kbps to 10 Mbps per channel.

Key Specifications

Pinout & Package

Package: 416-ball BGA (19 mm × 19 mm, 0.8 mm ball pitch), RoHS-compliant, lead-free, thermal pad exposed on underside.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-channel H.264 video codec applications.

Compared with HI3516C V200 and TW5864-BA2-CR, the TW5866-BA2-CR uniquely delivers 8-channel analog decode + dual HD digital input + full-duplex 4D1 codec in one die - making it optimal for high-density PCI capture cards and embedded DVRs requiring minimal external components.

Availability

TW5866-BA2-CR is available at Aetrix Electronics and suitable for embedded DVR front-ends, PCI-based video capture cards, and hybrid analog+IP surveillance recorders requiring stable component supply and long-term lifecycle support.

Supply support for TW5866-BA2-CR 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

Intersil Corporation, now part of Renesas Electronics, designs high-performance analog and mixed-signal ICs for power management, precision analog, and video infrastructure markets.

The TW5866-BA2-CR belongs to Intersil's Techwell™ video processing product line, engineered specifically for multi-channel surveillance systems requiring integrated analog/digital video decode, H.264 compression, and PCI host interfacing - targeting cost-effective, high-channel-count DVR solutions.

FAQ

What video standards does the TW5866-BA2-CR support for analog CVBS input?

The TW5866-BA2-CR supports NTSC (M/N/4.43) and PAL (B/D/G/H/I/K/L/M/N/60) standards with automatic detection per channel. Each of its 8 integrated video decoders includes adaptive 4H comb filters, IF compensation, and Color Transient Improvement to ensure robust decoding across broadcast and CCTV signal variations. This makes the TW5866-BA2-CR suitable for global deployment in analog surveillance systems without manual standard configuration.

Does the TW5866-BA2-CR support H.264 encoding and decoding simultaneously?

Yes, the TW5866-BA2-CR supports full-duplex operation: it can encode up to 4D1 (real-time) or 8D1 (non-real-time) while simultaneously decoding up to 8D1 video streams. The H.264 baseline profile Level 3 encoder and decoder operate independently, sharing DDR2 memory but with separate bitstream engines - enabling local recording and remote playback within the same TW5866-BA2-CR-based system.

What is the maximum resolution and frame rate supported by the TW5866-BA2-CR's BT.1120 interfaces?

The TW5866-BA2-CR's two BT.1120 ports support HD video at 74.25 MHz (720p) and 148.5 MHz (1080i/1080p). Each port handles one HD channel: playback resolution includes 1440×960, 1440×1152, 720p, and 1080i. These interfaces allow connection to external HD cameras or display processors without intermediate conversion, preserving image quality and reducing latency in HD surveillance systems using the TW5866-BA2-CR.

How does the TW5866-BA2-CR handle motion detection and analytics data?

The TW5866-BA2-CR provides per-channel motion detection using a configurable 16×12 pixel grid, generating motion vector and MB-type metadata accessible via PCI or asynchronous host interface. This raw analytics data enables host CPU-based video content analysis - such as intrusion detection or people counting - without requiring proprietary firmware. The TW5866-BA2-CR itself performs detection locally but offloads interpretation to the host, balancing real-time responsiveness with flexible algorithm implementation.

What DDR2 memory configurations are supported by the TW5866-BA2-CR?

The TW5866-BA2-CR supports one 16-bit or two 8-bit DDR2 SDRAM devices running at up to 333 MHz, with total memory capacity scalable from 256 MB to 2 GB. It implements auto-refresh and supports common DDR2 timings required for video buffering - including frame storage for encoding/decoding pipelines and motion JPEG buffers. This flexibility allows system designers to optimize memory size and cost based on channel count and retention requirements in their TW5866-BA2-CR implementation.