BT864A ETC, BT864A Datasheet - Page 3

• Manufacturer Part Number: BT864A
• Description: High Performance YCrCb to NTSC/PAL Digital Video Encoders
• Manufacturer: ETC

Analog luminance (Y) and chrominance (C) information is
available on the Y and C outputs for interfacing to S-video
equipment. The composite analog video signal is output
simultaneously onto two outputs. This enables two simultaneous
baseband composite video signals, or one output, to provide
baseband composite video while the other drives an RF
modulator. Programmable luminance delay (single-channel)
permits the synchronization of both luminance and chrominance
when video is transmitted to a television monitor via an RF
modulator. Analog RGB is also available to allow for support
of the European SCART/PeriTV interface. A two-wire teletext
(WST-B) interface is also included in the Bt864A/865A.
Macrovision anticopy circuitry is included in the Bt865A to
support DVD and newer set-top box services. The Bt864A is pin
and function compatible with the Bt865A to permit video design
and testing for applications that do require Macrovision circuitry
and those that do not.
I 2 C Interface
Bt864A/865A registers are accessed via a two-wire Inter-Integrated
Circuit (I
are used to transfer data at a rate of 100 Kbps. These lines are
used to access and program the internal registers of the device,
including the Macrovision registers of the Bt865A. Deactivation of
I
Implementation
The Bt864A/865A is packaged in a 52-pin Plastic Quad Flat
Pack (PQFP) with a 14 mm x 14 mm body size. It requires
only a minimum of discrete passive support components.
It is ideal for low-cost and high-performance video systems
and consumer electronics.
2
C communication is possible by asserting sleep or reset modes.
2
C) interface. Serial clock and data lines (SCL and SDA)
What is a Video Encoder?
A video encoder is an electronic integrated circuit (chip)
that delivers the signal to your television from a DVD or
video CD player, LaserDisc player, cable or satellite TV
set- top box, digital camera, video conferencing system,
Internet browser or personal computer (PC). It is the
chip that makes everyone’s favorite shows look bright,
crisp, colorful and clear. With today’s new digital video
systems,TV pictures can look their best when showing
movies and sports from DVD and TV set-top boxes.
Video encoder chips today have the functions of four
separate chips integrated into one single chip. These chips
take the digital video information which is stored on DVD
discs or digital camera memory cards, or transmitted to a
satellite dish TV receiver or cable tuner box, and convert it
into the “old-fashioned” type of signal a TV requires. The
video encoder converts digital bits into analog electrical
signals, which tell the TV what colors should be shown on
the screen and how bright or dark they should be. Better
quality video encoder chips produce better quality video
and make the images seem more lifelike and exciting.
Video encoder technology has improved rapidly in recent
years, allowing people to connect a variety of different video
devices to their TVs and create the home entertainment
systems of their dreams. These relatively inexpensive
devices are one of the most critical components of modern
video systems, and they have found widespread usage in
business, home office, medical, security, professional video
studios, and all types of consumer video applications.