TVP5145 Datasheet PDF - TI

The TVP5145 device is a high-quality, single-chip digital video decoder that converts baseband analog NTSC, PAL, and SECAM video into digital component video. Analog component, composite, and S-video inputs are supported. The TVP5145 device includes two 10-bit oversampling A/D converters. Line-locked sampling is square-pixel or ITU-R BT.601 (27 MHz). The output formats can be 20-/16-bit or 10-/8-bit 4:2:2, or 10-/8-bit ITU-R BT.656 with embedded synchronization. The TVP5145 device utilizes Texas Instruments’ patented technology for locking to weak, noisy, or unstable signals, and a chroma frequency control output is generated for synchronizing downstream video encoders.

●Complementary three-line or four-line adaptive comb filtering is available for both the luma and chroma data paths to reduce both cross-luma and cross-chroma artifacts; a chroma trap filter is also available. Video characteristics including brightness, hue, contrast, and saturation may be programmed using one of four supported host port interfaces: I2C and three parallel host interfaces (PHI). The TVP5145 device generates synchronization, blanking, field, lock, and clock signals in addition to digital video outputs.

●The TVP5145 device includes methods for advanced vertical blanking interval (VBI) data retrieval. The VBI data processor (VDP) slices, parses, and performs error checking on teletext, closed caption, and other data in several formats. A built-in FIFO stores up to 11 lines of teletext data, and with proper host port synchronization, full-screen teletext retrieval is possible. The TVP5145 device can pass through oversampled raw composite data for host-based software VBI processing.

●The TVP5145 device utilizes an internal ROM to contain the program code. Therefore, it does not require microcode download to operate.

●The TVP5145 device detects and decodes copy-protected input signals according to the Macrovision™ standard.

●The main blocks of the TVP5145 device include:

● Dual A/D converters with analog processors

● Y/C separation by 2D adaptive comb or chroma trap filter

● Chrominance processor

● Luminance processor

● Component processor

● Clock/timing processor and power-down control

● Output formatter

● Host port interface

● VBI data processor

● Macrovision™ 7.1 detection for composite, S-video, and component video

● Accepts NTSC (M, Japan, 4.43), PAL (B, D, G, H, I, M, N, Nc) and SECAM (B, D, G, K, K1, L) composite video, S-video

● Accepts analog component YPbPr video

● Six analog video inputs for up to two component inputs or six composite inputs, or two S-video inputs and two composite inputs

● Two fully differential CMOS analog preprocessing channels with clamping and automatic gain control (AGC) for best S/N performance

● Dual high-speed oversampling 10-bit A/D converters

● Patented architecture for locking to weak, noisy, or unstable signals

● Single 14.31818-MHz or 27-MHz reference crystal for all standards

● Line-locked clock and sampling

● Automatic detect and switching between NTSC, PAL, and SECAM standards

● Programmable output data rates:

● 12.2727-MHz square-pixel (NTSC)

● 14.75-MHz square-pixel (PAL/SECAM)

● 13.5-MHz ITU-R BT.601 (NTSC, PAL, and SECAM)

● Complementary 4-line (3-H delay) adaptive comb filters for both cross-luminance and cross-chrominance noise reduction

● Subcarrier Genlock/real-time control (RTC) output for synchronizing the color subcarrier of an external encoder

● Active video cropping

● Standard programmable video output formats:

● 20-/16-bit 4:2:2 YCbCr

● 10-/8-bit 4:2:2 YCbCr

● ITU-R BT.656 10-/8-bit 4:2:2 with embedded syncs

● Advanced programmable video output formats:

● Oversampled raw VBI data during active video

● Sliced VBI data during vertical blanking or active video

● Multiple VBI data formats supported:

● World standard teletext (WST), North American broadcast text system (NABTS), closed-caption (CC), and extended data service (XDS)

● Wide screen signaling (WSS), video program system (VPS), vertical interval time code (VITC), and a custom configuration mode that allows the user to program the VDP for unique VBI data signals

● Macrovision™ copy protection detection

● Programmable host port options including I2C and PHI (3 modes)

● Brightness, contrast, saturation, and hue control through host port

● Internal program ROM

● 5-V tolerant digital I/O ports

● 80-terminal TQFP package

● Applications

● Digital television

● Digital image processing

● Video conferencing

● Multimedia

● Digital video

● Desktop video

● Video capture

● Video editing

● Professional video applications

● Security applications

●Macrovision is a trademark of Macrovision Corporation.

●Other trademarks are the property of their respective owners.