SAA7105E_05 Datasheet, PDF (1/78 Pages) NXP Semiconductors – Digital video encoder

SAA7104E; SAA7105E
Digital video encoder
Rev. 02 — 23 December 2005
Product data sheet
1. General description
The SAA7104E; SAA7105E is an advanced next-generation video encoder which
converts PC graphics data at maximum 1280 × 1024 resolution (optionally 1920 × 1080
interlaced) to PAL (50 Hz) or NTSC (60 Hz) video signals. A programmable scaler and
anti-flicker filter (maximum 5 lines) ensures properly sized and flicker-free TV display as
CVBS or S-video output.
Alternatively, the three Digital-to-Analog Converters (DACs) can output RGB signals
together with a TTL composite sync to feed SCART connectors.
When the scaler/interlacer is bypassed, a second VGA monitor can be connected to the
RGB outputs and separate H and V-syncs as well, thereby serving as an auxiliary monitor
at maximum 1280 × 1024 resolution/60 Hz (PIXCLK < 85 MHz). Alternatively this port
can provide Y, P_B and P_R signals for HDTV monitors.
The device includes a sync/clock generator and on-chip DACs.
All inputs intended to interface to the host graphics controller are designed for low-voltage
signals between down to 1.1 V and up to 3.6 V.
2. Features
s Digital PAL/NTSC encoder with integrated high quality scaler and anti-flicker filter for
TV output from a PC
s Supports Intel Digital Video Out (DVO) low voltage interfacing to graphics controller
s 27 MHz crystal-stable subcarrier generation
s Maximum graphics pixel clock 85 MHz at double edged clocking, synthesized on-chip
or from external source
s Programmable assignment of clock edge to bytes (in double edged mode)
s Synthesizable pixel clock (PIXCLK) with minimized output jitter, can be used as
reference clock for the VGC, as well
s PIXCLK output and bi-phase PIXCLK input (VGC clock loop-through possible)
s Hot-plug detection through dedicated interrupt pin
s Supported VGA resolutions for PAL or NTSC legacy video output up to 1280 × 1024
graphics data at 60 Hz or 50 Hz frame rate
s Supported VGA resolutions for HDTV output up to 1920 × 1080 interlaced graphics
data at 60 Hz or 50 Hz frame rate
s Three Digital-to-Analog Converters (DACs) at 27 MHz sample rate for CVBS (BLUE,
C_B), VBS (GREEN, CVBS) and C (RED, C_R) (signals in parenthesis are optional); all at
10-bit resolution
s Non-Interlaced (NI) C_B-Y-C_R or RGB input at maximum 4 : 4 : 4 sampling