TW2864B-LD1-CR

Video Processing Overview

The TW2864B-LD1-CR is a four-channel video decoder and audio codec designed for security applications. It converts analog composite video signals to digital YCbCr data using four 10-bit ADCs and adaptive 4H comb filters. The device supports NTSC, PAL, and SECAM standards with auto-detection. It features integrated audio codecs with four ADCs and one DAC, supporting I2S interfaces. The default clock rate is 54MHz, enabling simultaneous Full D1 or CIF time-multiplexed outputs. Power consumption is typically 388.5mW.

Video Processing Feature Summary

• Integrates four high-quality video decoders with proprietary clamp and gain controllers for luminance and chrominance separation.
• Includes an audio codec with four analog-to-digital converters and one digital-to-analog converter for recording and playback.
• Supports standard ITU-R BT.656 format or time multiplexed output at 54MHz.
• Features programmable image enhancement techniques including IF compensation filter and Color Transient Improvement.

Video Processing Applications

• Security Systems
• Embedded DVR
• Video Server

Video Processing Procurement Notes

Verify the specific suffix LD1-CR against the manufacturer's current ordering information to confirm package dimensions and lead-free status. Confirm that the 54MHz default clock rate aligns with system timing requirements. Check datasheet revision history for any functional updates or pinout changes prior to finalizing procurement specifications.

Video Processing Selection Notes

Select this component when a multi-channel solution combining video decoding and audio processing is required. Ensure the design accommodates the 100-pin LQFP package size of 12mm x 12mm. Verify that the host interface supports the two-wire serial control protocol. Consider power constraints as the typical consumption is approximately 388.5mW.

Video Processing Part Context

This part belongs to the TW2864 family of 4-in-1 video decoders and audio codecs. Variants such as TW2864A and TW2864C offer different default clock rates of 108MHz. The TW2864B specifically defaults to a 54MHz clock rate. The product is marked as not recommended for new designs by the manufacturer.

Video Processing Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

Video Processing FAQ

What video standards does the TW2864 support?

It accepts all NTSC (M/4.43), PAL (B/D/G/H/I/K/L/M/N/60), and SECAM standards with automatic detection capabilities.

How many audio channels are integrated?

The device includes four audio Analog-to-Digital converters and one Digital-to-Analog converter.