BT864AKRF Datasheet, PDF (3/71 Pages) Conexant Systems, Inc – YCrCb to NTSC/PAL Digital Video Encoder

Bt864A/Bt865A
YCrCb to NTSC/PAL Digital Video Encoder
Data Sheet
Distinguishing Features
The Bt864A/Bt865A is specifically designed for video systems requiring the
‹ 8- or 16-bit 4:2:2 YCrCb inputs
generation of composite, Y/C (S-video) or RGB (SCART) video signals from an 8- or
‹ NTSC-M/PAL/PAL–M/PAL–N/PAL–Nc
composite video outputs
16-bit YCrCb digital video stream. Worldwide video standards are supported including _{‹ S-Video/RGB (SCART) outputs}
NTSC-M (N. America, Taiwan, Japan), PAL-B,D,G,H,I (Europe, Asia), PAL–M (Brazil), _{‹ CCIR 601 or square pixel operation}
PAL-N (Uruguay, Paraguay) and PAL–Nc (Argentina). The Bt864A and Bt865A are _{‹ 2x oversampling}
functionally identical, with the exception that Bt865A can output the Macrovision level _{‹ 10-bit DACs}
7 anticopy algorithm.
‹ Master or slave video timing
Horizontal sync (HSYNC*) and vertical sync (VSYNC*) may be configured as inputs
(slave mode) or outputs (master mode). BLANK* is an input and may be externally
controlled. Horizontal and vertical blanking are automatically generated. The rise and
fall times of sync, the burst envelope, and closed caption data are internally
controlled.
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 allows one output to provide baseband
composite video while the other drives an RF modulator. Analog RGB is also available
to allow for support of the European SCART/PeriTV interface.
‹ Auto mode detection function
(slave mode)
‹ Interlaced/noninterlaced operation
‹ Macrovision 7 support (Bt865A only)
‹ Closed caption encoding
‹ Teletext encoding (WST system B)
‹ I²C Interface
‹ On-board voltage reference
‹ Power-down modes
‹ Programmable luma delay (single-
channel)
Functional Block Diagram
‹ 5 V or 3.3 V supply voltage
‹ Copy Generation Management System
(CGMS)
TTXDAT TTXREQ SDA SCL VBIAS VREF
FSADJUST
Related Products
CLK
P[7:0]
Internal
VREF
10
DAC
COMP
‹ Bt852
‹ Bt856/7
‹ Bt864/5
‹ Bt866/7
CVBS/B
Applications
Y[7:0]
RESET*
HSYNC*
VSYNC*
BLANK*
FIELD
SLAVE
Latch
1.3 MHz
LPF
2x
Upsampling
Mod.
and
Mixer
10
Color
DAC
Space
Convert 10
DAC
10
DAC
‹ Digital cable systems
CVBS/G _{‹ Satellite television setup boxes (DBS/DSS)}
‹ DVD players
Y/CVBS _{‹ Digital VCR (DVC, DVHS)}
‹ VideoCD players
C/R ^{‹ Portable VideoCD players}
‹ Digital cameras
‹ PC add-on cards
VDD3V
ALTADDR SLEEP
RGBOUT
100138C
Conexant
iii
02/17/03