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Renesas TW2819-BA2-CR
- Part No.:
- TW2819-BA2-CR
- Manufacturer:
- Renesas
- Category:
- Encoders, Decoders, Converters
- Package:
- 100-TQFP
- Datasheet:
-
TW2819-BA2-CR.pdf
- Description:
- IC A/V CODEC/DECOD 16CH 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,844
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Product details
Overview
TW2819-BA2-CR from Intersil is a multichannel H.264 audio/video codec IC for security surveillance systems, supporting up to 16-channel SD/960H encode, 4-channel 1080p encode/decode, 16-channel ADPCM audio encode, BT.656/BT.1120 video I/O, and PCI host interface. It operates at 1.2V core, 3.3V I/O, and 1.8V DDR2 I/O with 4.7W typical power consumption.
For engineers reviewing the TW2819-BA2-CR datasheet, TW2819-BA2-CR pinout, TW2819-BA2-CR application, or TW2819-BA2-CR equivalent, key selection factors include real-time full-duplex H.264 Main Profile compliance, independent per-channel encode/decode control, BT.1120 148.5MHz bidirectional video ports, 32-bit PCI target interface timing, and DDR2 SDRAM memory bandwidth requirements.
Technical Context
The TW2819-BA2-CR integrates a dedicated H.264 encoder/decoder engine supporting Main Profile only, with four independent BT.1120 bidirectional video ports running at 148.5MHz and four fixed BT.656 input ports up to 144MHz. It implements two external 16-bit DDR2 SDRAM interfaces clocked at 432MHz for frame buffering.
It uses a 32-bit PCI target interface operating at 33/66MHz for host communication and supports 16-channel ADPCM audio encoding with four I²S digital audio inputs and one I²S output, all configurable from 8kHz to 48kHz sample rates.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| H.264 Compliance | Main Profile only - no Baseline or High Profile support; limits compatibility with certain decoders requiring extended profiles. |
| Video Encode Capacity | Up to 4×1080p or 8×720p or 16×SD/960H - enables flexible channel-count vs resolution trade-offs in DVR/NVR design. |
| Video Decode Capacity | Up to 4 channels of D1/960H/720p/1080p - supports local playback and preview without external decoder ICs. |
| BT.1120 Interface | Four bidirectional ports at 148.5MHz - allows direct connection to HD-SDI deserializers (e.g., TW6874) without level-shifting or serialization logic. |
| Audio Support | 16-channel ADPCM encode + 1-channel decode, I²S ×4 in / ×1 out - meets multi-camera audio sync and alarm-triggered recording needs. |
| Memory Interface | Dual 16-bit DDR2 at 432MHz - provides ~1.37GB/s aggregate bandwidth required for concurrent encode/decode of multiple HD streams. |
| Host Interface | 32-bit PCI target at 33/66MHz - requires PCI-to-PCIe bridge (e.g., TW6874) for modern x86 host integration. |
Pinout & Package
Package: TEPBGA-676, 35mm × 35mm, 1.0mm lead pitch, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN | PCI Clock Input | Accepts 33/66MHz system clock; must be clean and low-jitter for reliable PCI timing compliance. |
| AD[31:0] | PCI Address/Data Multiplexed Bus | 32-bit multiplexed address/data lines; requires proper setup/hold timing and bus turnaround control. |
| DDR2_DQ[15:0] | DDR2 Data Bus (per channel) | Two independent 16-bit DDR2 data buses - each requires matched trace length and on-die termination calibration. |
| BT1120_D[23:0] | BT.1120 Video Data (per port) | 24-bit parallel video data per bidirectional BT.1120 port; supports 1080p@60fps YUV 4:2:2 format. |
| I2S_SDIN[3:0] | I²S Audio Input Data (4 channels) | Four independent I²S serial audio inputs - enables synchronized audio capture across up to 16 analog camera channels via external ADCs. |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel encode/decode control | Enables mixed-resolution recording (e.g., 2×1080p + 6×720p + 8×D1) within single TW2819-BA2-CR, reducing system BOM count. |
| Integrated OSD on H.264 path | Allows timestamp, camera ID, or alarm overlay directly in encoded bitstream - eliminates need for external video processor or FPGA. |
| Simple JPEG encode (CIF) | Provides lightweight still-image capture for motion-triggered snapshots without full H.264 encoding overhead. |
| BT.656 byte-interleaved input | Supports legacy analog video sources (e.g., CVBS via decoder ICs) at up to 144MHz pixel clock - maintains backward compatibility with existing SD camera infrastructure. |
| Dual DDR2 memory interface | Enables simultaneous encode and decode operations with zero frame buffer contention - critical for live preview during recording. |
Applications
| HD-SDI Digital Video Recorder | H.264 Network Video Encoder |
|---|---|
Use Scenario: Multi-camera HD-SDI DVR with local storage and remote streaming. IC Role / Device Role / Timing Role: Primary H.264 encode/decode SoC handling all video processing, memory management, and PCI host handoff. Use Value: Enables 4×1080p encode + 4×1080p decode concurrently using internal DDR2 bandwidth - supports real-time playback while recording without external DRAM. | Use Scenario: Standalone IP camera encoder module converting analog or HD-SDI feeds to RTSP/H.264 stream. IC Role / Device Role / Timing Role: Central video compression engine interfacing to HD-SDI deserializers and network MAC via host CPU. Use Value: BT.1120 148.5MHz bidirectional ports allow direct connection to GMSL/HD-SDI receivers - reduces component count versus FPGA-based solutions. |
| HD Compression PC Card | Hybrid Analog/HD Surveillance System |
Use Scenario: PCIe add-in card for PC-based VMS with mixed SD/HD camera inputs. IC Role / Device Role / Timing Role: PCI-target video codec bridging host CPU to video I/O; handles all encode scheduling and bitstream formatting. Use Value: 32-bit PCI interface at 66MHz delivers >200MB/s sustained throughput - sufficient for 8×720p@30fps H.264 Main Profile encoding. | Use Scenario: Unified recorder accepting both analog CVBS (via BT.656 decoders) and HD-SDI (via BT.1120) camera inputs. IC Role / Device Role / Timing Role: Unified video processing hub managing heterogeneous input formats and resolution scaling before encoding. Use Value: Four BT.656 inputs (144MHz) + four BT.1120 ports (148.5MHz) enable simultaneous 16×SD + 4×1080p ingest - eliminates need for separate SD/HD processing paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel H.264 video codec applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HI3516CV500 (Hisilicon) | ARM Cortex-A7 CPU + H.264/H.265 encode/decode; integrated ISP and NNIE; no native PCI interface. | Targeted for embedded Linux NVRs with AI analytics; requires software stack migration and DDR3/4 memory. | Preferred when AI-based motion detection or facial recognition is required; not drop-in compatible due to architecture and interface differences. |
| TCM8230MD (Toshiba) | Single-channel H.264 encoder only; supports 1080p@30fps; no decode, no PCI, no BT.1120; uses parallel YUV or MIPI CSI-2 input. | Suitable for compact single-sensor edge encoders; lacks multi-channel scalability and DVR-level features. | Only viable for point-of-use encoding where system-level integration and multi-stream capability are unnecessary. |
Compared with HI3516CV500 and TCM8230MD, the TW2819-BA2-CR uniquely combines PCI host interface, BT.1120 video I/O, and hardware-accelerated multi-channel encode/decode in a single chip - making it suitable for legacy PC-based DVRs and HD-SDI systems where minimal firmware dependency and deterministic latency are critical.
Availability
TW2819-BA2-CR is available at Aetrix Electronics and suitable for HD-SDI DVRs, H.264 network video encoders, and hybrid analog/HD surveillance systems requiring stable component supply and long-term industrial availability.
Supply support for TW2819-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 TW2819 product line targets cost-sensitive, high-channel-count security surveillance systems requiring real-time H.264 encoding with minimal host CPU involvement and standardized video I/O interfaces.
FAQ
Is TW2819-BA2-CR compliant with H.264 High Profile?
No, the TW2819-BA2-CR supports H.264 Main Profile only, as confirmed in the official datasheet FN8404. It does not implement CABAC entropy coding or 8×8 transform required for High Profile. Applications requiring High Profile decoding must use external software or alternate silicon. The TW2819-BA2-CR remains fully interoperable with Main Profile decoders used in most RTSP and ONVIF-compliant clients.
What is the maximum DDR2 memory capacity supported by TW2819-BA2-CR?
The TW2819-BA2-CR supports two external 16-bit DDR2 SDRAM devices, each up to 1Gbit (128MB), for a total of 256MB addressable memory. This matches the reference design shown in Figure 1 of FN8404, where two 1G DDR2 chips are used. Memory bandwidth is constrained by 432MHz clock rate and 16-bit bus width per channel.
Does TW2819-BA2-CR support HDMI or DisplayPort output?
No, the TW2819-BA2-CR does not include HDMI or DisplayPort transmitters. Its video outputs are limited to four BT.656/1120 parallel digital video ports. To drive HDMI displays, external converters (e.g., TI TFP410 or Parade PS8315) must be added. The TW2819-BA2-CR's VO1–VO4 signals are designed for connection to video DACs or HD-SDI serializers, not consumer display interfaces.
Can TW2819-BA2-CR perform simultaneous encode and decode on the same video channel?
No, the TW2819-BA2-CR allocates video channels independently to encode or decode mode - a given channel cannot be both encoded and decoded simultaneously. However, it supports concurrent operation across different channels: e.g., 2 channels in encode mode and 2 in decode mode, all active at once. This is enabled by its dual DDR2 memory interface and separate encode/decode engines.
Is TW2819-BA2-CR pin-compatible with other TW28xx family members?
No, the TW2819-BA2-CR is not pin-compatible with earlier TW280x or TW2815 variants. Its TEPBGA-676 package and signal mapping (e.g., BT.1120 bidirectional ports, dual DDR2 interface) differ significantly. Migration from TW2815 to TW2819-BA2-CR requires PCB redesign and firmware adaptation due to changes in register map, memory controller, and video port configuration.
TW2819-BA2-CR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-TQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Type:
- Audio/Video Encoder
- Applications:
- -
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (12x12)
TW2819-BA2-CR FAQ
1.How can I place an order for TW2819-BA2-CR through Aetrix?
Please submit a Request for Quotation (RFQ) for TW2819-BA2-CR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TW2819-BA2-CR reliable?
The price and inventory of TW2819-BA2-CR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TW2819-BA2-CR is usually 5 days.
3.What payment methods are accepted for TW2819-BA2-CR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TW2819-BA2-CR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TW2819-BA2-CR?
TW2819-BA2-CR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TW2819-BA2-CR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TW2819-BA2-CR?
For technical support, including TW2819-BA2-CR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TW2819-BA2-CR requirements.
6.How does Aetrix verify that TW2819-BA2-CR is sourced from the original manufacturer or authorized distributors?
All TW2819-BA2-CR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TW2819-BA2-CR meets industry standards.
7.What is the process for return or replacement of TW2819-BA2-CR?
All TW2819-BA2-CR units undergo pre-shipment inspection (PSI). If there is an issue with TW2819-BA2-CR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TW2819-BA2-CR part is unused and in its original packaging.
Return procedure for TW2819-BA2-CR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TW2819-BA2-CR Tags
-
MCP2120T-I/SL
Microchip Technology
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LICAL-ENC-MS001
TE Connectivity Linx
-
TW9990AT-NA1-GR
Renesas
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TVP5151IPBSR
Texas Instruments
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TVP5150AM1IPBSR
Texas Instruments
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LICAL-DEC-MS001-T
TE Connectivity Linx
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ADV7391BCPZ
Analog Devices Inc.
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ADV7393BCPZ-REEL
Analog Devices Inc.
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ADV7393BCPZ
Analog Devices Inc.
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ADV7391WBCPZ
Analog Devices Inc.
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ADV7181DBCPZ
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Analog Devices Inc.
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