1.1 Features
· Four Separate Video Decoder Channels With
Features for Each Channel:
– Accept NTSC (M, 4.43), PAL (B, D, G, H, I,
M, N), and SECAM (B, D, G, K, K1, L) Video
Data
– Support ITU-R BT.601 Standard Sampling
– High-Speed 9-Bit Analog-to-Digital
Converter (ADC)
– Two Composite Inputs or One S-video Input
(for Each Channel)
– Fully Differential CMOS Analog
Preprocessing Channels With Clamping
and Automatic Gain Control (AGC) for Best
Signal to Noise (SNR) Performance
– Brightness, Contrast, Saturation, Hue, and
Sharpness Control Through Inter-Integrated
Circuit (I2C)
– Complementary 4-Line (3-H Delay) Adaptive
Comb Filters for Both Cross-Luminance
and Cross-Chrominance Noise Reduction
– Patented Architecture for Locking to Weak,
Noisy, or Unstable Signals
· Four Independent Polymorphic Scalers
· Single or Concurrent Scaled and Unscaled
Outputs Via Dual Clocking Data, Interleaved
54-MHz Data or Single 27-MHz Clock
· Scaled/Unscaled Image Toggle Mode Gives
Variable Field Rate for Both Scaled and
Unscaled Video
· Low Power Consumption: 700 mW Typical
· 128-Pin Thin Quad Flat Pack (TQFP) Package
· Single 14.31818-MHz Crystal for All Standards
and All Channels
· Internal Phase-Locked Loop (PLL) for
Line-Locked Clock (Separate for Each
Channel) and Sampling
· Sub-Carrier Genlock Output for Synchronizing
Color Sub-Carrier of External Encoder
· Standard Programmable Video Output Format
– ITU-R BT.656, 8-Bit 4:2:2 With Embedded
Syncs
– 8-Bit 4:2:2 With Discrete Syncs
· Advanced Programmable Video Output
Formats
– 2´ Over-Sampled Raw Vertical Blanking
Interval (VBI) Data During Active Video
– Sliced VBI Data During Horizontal Blanking
or Active Video
· VBI Modes Supported:
– Teletext (NABTS, WST)
– Closed-Caption Decode With FIFO, and
Extended Data Services (EDS)
– Wide Screen Signaling (WSS), Video
Program System (VPS), Copy Generation
Management System (CGMS), Vertical
Interval Time Code (VITC)
– Gemstar 1´/2´ Electronic Program Guide
Compatible Mode
– Custom Configuration Mode Allows User to Program the Slice Engine for Unique VBI
Data Signals
· Improved Fast Lock Mode Can Be Used When
Input Video Standard Is Known and Signals on
Switching Channels Are Clean
· Four Possible I2C Addresses Allowing 16
Decoder Channels on a Single I2C Bus

1.2 Applications
· The following is a partial list of suggested applications:
– Security Camera Systems
– Large Format Video Wall Displays
– Games Systems

1.3 Description
The TVP5154 device is a 4-channel, low-power, NTSC/PAL/SECAM video decoder. Available in a
space-saving 128-pin thin quad flat pack (TQFP) package, each channel of the TVP5154 decoder
converts NTSC, PAL, or SECAM video signals to 8-bit ITU-R BT.656 format. Discrete syncs are also
available. All four channels of the TVP5154 are independently controllable. The decoders share one
crystal for all channels and for all supported standards. The TVP5154 can be programmed using a single
inter-integrated circuit (I2C) serial interface. The decoder uses a 1.8-V supply for its analog and digital
supplies, and a 3.3-V supply for its I/O. The optimized architecture of the TVP5154 decoder allows for low
power consumption. The decoder consumes less than 720 mW of power in typical operation.
Each channel of the TVP5154 is an independent video decoder with a programmable polymorphic scaler.
Each channel converts baseband analog video into digital YCbCr 4:2:2 component video, which can then
be scaled down to any resolution to 1/256 vertical and 15-bit horizontal in 2-pixel decrements. Composite
and S-video inputs are supported. Each channel includes one 9-bit analog-to-digital converter (ADC) with
2´ sampling. Sampling is ITU-R BT.601 (27.0) MHz, generated from a single 14.31818-MHz crystal or
oscillator input) and is line locked. The output formats can be 8-bit 4:2:2 with discrete syncs or 8-bit ITU-R
BT.656 with embedded synchronization.
The TVP5154 utilizes Texas Instruments patented technology for locking to weak, noisy, or unstable
signals. A real-time control (RTC) output is generated for each channel for synchronizing downstream
video encoders.
Complementary 4-line adaptive comb filtering is available per channel for both the luma and chroma data
paths to reduce both cross-luma and cross-chroma artifacts. A chroma trap filter also is available.
An improved fast lock mode can be used when the input video standard is known and the signals on the
switching channels are clean. Note, switching from snow and/or noisy channels to good channels takes
longer. In fast lock mode, video lock is achieved in three fields or less.
Video characteristics, including hue, contrast, brightness, saturation, and sharpness, may be
independently programmed for each channel using the industry standard I2C serial interface. The
TVP5154 generates synchronization, blanking, lock, and clock signals in addition to digital video outputs
for each channel. The TVP5154 includes methods for advanced vertical blanking interval (VBI) data
retrieval. The VBI data processor slices, parses, and performs error checking on teletext, closed caption,
and other data in several formats.
I2C commands can be sent to one or more decoder cores simultaneously, reducing the amount of I2C
activity necessary to configure each core. A register controls which decoder core receives I2C commands,
and can be configured such that all four decoders receive commands at the same time.
The main blocks for each of the channels of the TVP5154 decoder include:
· Robust sync detector
· ADC with analog processor
· Y/C separation using 4-line adaptive comb filter
· Independent, concurrent scaler outputs
· Chrominance processor
· Luminance processor
· Video clock/timing processor and power-down control
· I2C interface
· VBI data processor