Renesas TW5864B-BB1-CR

Overview

TW5864B-BB1-CR from Intersil is a 4-channel analog video/audio decoder with integrated H.264 baseline profile Level 3 encoder, supporting up to 125 fps (PAL) or 150 fps (NTSC), 17-channel G.726 ADPCM audio encoding, and three BT.656 digital input ports for up to 12 external video channels - enabling total 16-channel DVR front-end functionality in security systems.

For engineers reviewing the TW5864B-BB1-CR datasheet, TW5864B-BB1-CR pinout, TW5864B-BB1-CR application, or TW5864B-BB1-CR equivalent, key selection considerations include its 352-ball BGA package, dual-bitstream H.264 encoding capability, per-channel motion detection (16×12 cells), built-in de-interlacers and OSDs, and PCI/async host interface flexibility for embedded DVR and PC-based surveillance card designs.

Technical Context

The TW5864B-BB1-CR implements a dedicated hardware H.264 encoder with full-pel, ½-pel, and ¼-pel motion vector granularity, CAVLC entropy coding, and in-loop deblocking - all operating at up to 10 Mbps per channel. Its four internal NTSC/PAL CVBS decoders feature 10-bit ADCs, adaptive 4H comb filters, IF compensation, and CTI for broadcast-grade analog video fidelity.

It supports real-time 4 D1 / 16 CIF main-stream encoding and 4 CIF / 16 QCIF secondary-stream encoding, with independent scalers for H.264, MJPEG, and preview paths. The device integrates two 16-bit DDR SDRAM interfaces running at 166 MHz, and provides both PCI (33/66 MHz) and configurable 32-bit asynchronous host interfaces for system control and bitstream upload.

Key Specifications

Pinout & Package

Package: 352-ball BGA (27 mm × 27 mm), RoHS-compliant, Pb-free solder balls, Bonding Option B.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TW5864C-BB1-CR, the TW5864B-BB1-CR offers identical encoding performance and pin compatibility but targets 4+12 channel configurations with matching bonding option; versus HI3516CV500, it delivers lower BOM cost and deterministic real-time behavior for analog-only systems without OS overhead.

Availability

TW5864B-BB1-CR is available at Aetrix Electronics and suitable for embedded DVR front-ends, 4-channel PC-based surveillance cards, and scalable 16-channel analog video recorder systems requiring stable component supply and long-term lifecycle support.

Supply support for TW5864B-BB1-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 (now part of Renesas Electronics) is a semiconductor company specializing in precision analog, power management, and video processing ICs for industrial, automotive, and communications markets.

The TW5864 product line was designed specifically for cost-sensitive, high-channel-count analog video surveillance systems - integrating decoding, encoding, motion analysis, and system interfacing into a single chip to replace multi-ASIC solutions.

FAQ

What video standards does the TW5864B-BB1-CR support on its analog inputs?

The TW5864B-BB1-CR supports all NTSC variants (M/N/4.43) and PAL variants (B/D/G/H/I/K/L/M/N/60) with automatic detection on its four CVBS inputs. Each channel includes integrated 10-bit ADCs, adaptive 4H comb filters, IF compensation, and Color Transient Improvement (CTI) to maintain broadcast-grade fidelity across global analog video formats - a capability confirmed in the FN7961 Rev. 1.00 datasheet Section 2.1 and Table 1.

Does the TW5864B-BB1-CR support dual-bitstream H.264 encoding, and how is it configured?

Yes, the TW5864B-BB1-CR supports dual-bitstream H.264 encoding: one main stream (e.g., D1 resolution for local storage) and one secondary stream (e.g., CIF for network transmission). Configuration is done via register map addresses 0x0000–0x1FFC, where separate GOP, bitrate, and resolution parameters can be set per stream - enabling simultaneous recording and streaming without external multiplexing, as specified in Section 4.3 of the FN7961 datasheet.

How many external video decoders can the TW5864B-BB1-CR interface with, and what interface is used?

The TW5864B-BB1-CR interfaces with up to 12 external video channels using three dedicated BT.656 digital input ports, each operating at 108 MHz. These ports are designed for direct connection to TW2866 or TW2867 multi-channel video decoders, supporting byte-interleaved D1 format at 50/60 fields per second - allowing total system input capacity of 16 channels (4 on-chip + 12 off-chip), per Section 1.2 and Figure 3 of the FN7961 datasheet.

What audio encoding capabilities does the TW5864B-BB1-CR provide, and how many channels are supported?

The TW5864B-BB1-CR integrates a hardware G.726 ADPCM encoder supporting up to 17 audio channels, with one channel reserved for two-way communication. It also includes five audio ADCs and one DAC for mixed analog output, and supports I²S interface, PCM/u-Law/A-Law formats, and programmable sample rates (8/16/32/44.1/48 kHz), as detailed in Sections 4.5 and 5.1 of the FN7961 datasheet - eliminating need for external audio codecs in multi-zone surveillance systems.

Is the TW5864B-BB1-CR pin-compatible with other variants in the TW5864 family, such as TW5864A-BB1-CR or TW5864C-BB1-CR?

Yes, the TW5864B-BB1-CR is pin-compatible with TW5864A-BB1-CR and TW5864C-BB1-CR, sharing the same 352-ball BGA package (V352.27x27) and identical pinout per Figure 5 and Pin Description tables in the FN7961 datasheet. Functional differences (e.g., number of supported external video channels) are implemented internally and do not affect mechanical or electrical interface compatibility - enabling drop-in replacement within the same PCB layout.