Renesas TW5864C-BB1-CR

Overview

TW5864C-BB1-CR from Intersil is a 4-channel analog video/audio decoder with integrated H.264 baseline profile Level 3 encoder, supporting up to 16 total video inputs (4 on-chip CVBS + 12 external BT.656), 125 fps PAL / 150 fps NTSC real-time encoding, dual-bitstream output, and 17-channel G.726 ADPCM audio encoding - deployed in embedded DVRs and multi-channel PC-based security recorders.

For engineers reviewing the TW5864C-BB1-CR datasheet, TW5864C-BB1-CR pinout, TW5864C-BB1-CR application, or TW5864C-BB1-CR equivalent, key selection factors include its 352-ball BGA package, PCI/async host interface flexibility, motion vector accessibility for analytics, per-channel de-interlacing and OSD, and support for 12-channel external video decoder cascading via three 108 MHz BT.656 ports.

Technical Context

The TW5864C-BB1-CR implements a front-end AV processing architecture: four integrated NTSC/PAL CVBS decoders feed directly into the H.264 encoder, while three independent BT.656 digital input ports (each at 108 MHz) accept up to 12 additional D1 streams from external TW2866 chips. Its H.264 encoder operates at baseline profile Level 3 with full-pel/½-pel/¼-pel motion estimation and in-loop deblocking.

It features parallel processing paths: one for main-stream H.264 encoding (up to 4×D1 real-time), another for secondary-stream encoding (e.g., 4×CIF), plus a shared Motion JPEG encoder (25 fps max), all fed by independently configurable scalers. Video analytic data-including 16×12 motion detection cells and per-macroblock motion vectors-is exposed via PCI or async host interface for CPU-side intelligence.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with TW5864B-BB1-CR and HI3520DV300, the TW5864C-BB1-CR uniquely delivers 16-channel analog-capable encoding in a single chip with hardware motion analytics - making it optimal for analog-to-DVR transitions requiring minimal layout changes and maximum channel density.

Availability

TW5864C-BB1-CR is available at Aetrix Electronics and suitable for embedded DVRs, PC-based NVR cards, hybrid analog/IP recorders, and edge AI surveillance nodes requiring stable component supply across long-lifecycle industrial programs.

Supply support for TW5864C-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-effective, high-channel-count video surveillance systems - integrating analog decode, digital interface, H.264 encoding, and analytics acceleration into a single front-end SoC.

FAQ

What video standards does the TW5864C-BB1-CR support on its analog inputs?

The TW5864C-BB1-CR supports full auto-detection of NTSC (M/N/4.43) and PAL (B/D/G/H/I/K/L/M/N/60) standards across all four CVBS inputs. Each channel includes integrated anti-aliasing filters, 10-bit CMOS ADCs, adaptive 4H comb filters, IF compensation, and Color Transient Improvement - ensuring robust decoding under varying signal conditions without host intervention. This capability is confirmed in the FN7961 datasheet Section 2.1 and Table 1.

How many external video decoders can the TW5864C-BB1-CR interface with, and what is the maximum total channel count?

The TW5864C-BB1-CR interfaces with up to 12 external video channels via three dedicated BT.656 ports, each operating at 108 MHz and supporting 4 D1 channels in time-division multiplexed format. Combined with its four on-chip CVBS decoders, this yields a total of 16 video input channels - explicitly documented in the datasheet's ordering table, functional block diagram (Figure 3), and Section 1 introduction. The "C" suffix denotes this 12-channel external capability.

Does the TW5864C-BB1-CR support dual-bitstream H.264 encoding, and how is it configured?

Yes, the TW5864C-BB1-CR supports dual-bitstream H.264 encoding: one main stream (e.g., 4×D1 for local storage) and one sub-stream (e.g., 4×CIF for network transmission). Configuration is performed via register map addresses 0x0000–0x1FFC (H.264 Register Map), where separate bitrate, resolution, GOP, and VBR/CBR settings are applied per stream. This is detailed in Section 4.3 ("H.264 Encoding Module") and Figure 19 of the FN7961 datasheet.

What audio encoding capabilities does the TW5864C-BB1-CR provide, and how many channels are supported?

The TW5864C-BB1-CR integrates a hardware G.726 ADPCM encoder supporting up to 17 audio channels - 16 for recording and 1 dedicated to two-way communication. It also includes five analog audio ADCs and one DAC for mixed analog output. Audio sample rates (8/16/32/44.1/48 kHz) and word length (PCM 8/16-bit, μ-Law/A-Law 8-bit) are fully programmable. These specifications are verified in Section 4.5 ("Digital Audio CODEC") and Table 17–19 of FN7961.

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

Yes, the TW5864C-BB1-CR is pin-compatible with TW5864A-BB1-CR and TW5864B-BB1-CR - all use the identical 352-ball BGA package (V352.27x27) and share the same mechanical footprint, power, ground, and interface pinouts. Functional differences (e.g., number of BT.656 ports enabled) are determined by internal configuration and bonding option, not pin assignment - as confirmed in the "Ordering Information" table (Page 6) and Pin Description section (Page 10) of FN7961.