Philips Semiconductors
HD-CODEC
Product specification
SAA7108AE; SAA7109AE
1 FEATURES
1.1 Video decoder
• Six analog inputs, internal analog source selectors, e.g.
6 × CVBS or (2 × Y/C and 2 × CVBS) or (1 × Y/C and
4 × CVBS)
• Two analog preprocessing channels in differential
CMOS style for best S/N performance
• Fully programmable static gain or Automatic Gain
Control (AGC) for the selected CVBS or Y/C channel
• Switchable white peak control
• Two built-in analog anti-aliasing filters
• Two 9-bit video CMOS Analog-to-Digital Converters
(ADCs), digitized CVBS or Y/C signals are available on
the Image Port Data (IPD) port under I2C-bus control
• On-chip clock generator
• Line-locked system clock frequencies
• Digital PLL for horizontal sync processing and clock
generation, horizontal and vertical sync detection
• Requires only one crystal (either 24.576 MHz or
32.11 MHz) for all standards
• Automatic detection of 50 and 60 Hz field frequency,
and automatic switching between PAL and NTSC
standards
• Luminance and chrominance signal processing for
PAL BGHI, PAL N, combination PAL N, PAL M,
NTSC M, NTSC-Japan, NTSC N, NTSC 4.43 and
SECAM
• User programmable luminance peaking or aperture
correction
• Cross-colour reduction for NTSC by chrominance comb
filtering
• PAL delay line for correcting PAL phase errors
• Brightness Contrast Saturation (BCS) and hue control
on-chip
• Two multi functional real-time output pins controlled by
the I2C-bus
• Multi-standard VBI data slicer decoding World Standard
Teletext (WST), North-American Broadcast Text
System (NABTS), Closed Caption (CC), Wide Screen
Signalling (WSS), Video Programming System (VPS),
Vertical Interval Time Code (VITC) variants
(EBU/SMPTE) etc.
• Standard ITU 656 Y-CB-CR 4 : 2 : 2 format (8-bit) on IPD
output bus
• Enhanced ITU 656 output format on IPD output bus
containing:
– active video
– raw CVBS data for INTERCAST applications
(27 MHz data rate)
– decoded VBI data
• Detection of copy protected input signals according to
the Macrovision™(1) standard. Can be used to prevent
unauthorized recording of pay-TV or video tape signals.
1.2 Video scaler
• Both up and downscaling
• Conversion to square pixel format
• NTSC to 288 lines (video phone)
• Phase accuracy better than 1/64 pixel or line, horizontally
or vertically
• Independent scaling definitions for odd and even fields
• Anti-alias filter for horizontal scaling
• Provides output as:
– scaled active video
– raw CVBS data for INTERCAST, WAVE-PHORE,
POPCON applications or general VBI data decoding
(27 MHz or sample rate converted)
• Local video output for Y-CB-CR 4 : 2 : 2 format (VMI,
VIP, ZV).
(1) Macrovision™ is a trademark of the Macrovision Corporation.
2004 Jun 29
3