SAA7130 Просмотр технического описания (PDF) - Philips Electronics
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SAA7130 Datasheet PDF : 46 Pages
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Philips Semiconductors
SAA7130HL
PCI video broadcast decoder
Video is digitized and decoded to YUV. The digital streams are pumped via DMA into the
PCI memory space.
The SAA7130HL incorporates the means for legacy analog audio signal routing. The
analog audio input signal is fed via an analog audio loopback cable into the line-in of a
legacy sound card. An external audio signal, that would have otherwise connected directly
to the sound card, is now routed through the SAA7130HL. This analog pass-through is
enabled as default by a system reset, i.e. without any driver involvement and before
system setup.
During the power-up procedure, the SAA7130HL will investigate the on-board EEPROM
to load the board-specific system vendor ID and board version ID into the related places
of the PCI configuration space. The board vendor can store other board-specific data in
the EEPROM that is accessible via the I2C-bus.
TV cable
or
terrestrial
CVBS
S-video
audio
line-in
TV CAPTURE PCI CARD
TV TUNER AND
IF-PLL
CVBS
AF sound
(mono)
I 2C - bus
DECODER FOR
TV VIDEO
analog
audio
loopback
cable
DMA MASTER
INTO PCI
SAA7130HL
I2C-BUS EEPROM
SYSTEM
VENDOR ID
PCI-bus:
digital video, raw VBI, TS
SOUND
CARD
SAA7130HL_4
Product data sheet
SOUTH
BRIDGE
NORTH
BRIDGE
AGP
VGA AND
LOCAL MEMORY
ISA
SYSTEM
MEMORY
FSB
CPU AND
CACHE MEMORY
mhc172
Fig 5. TV mono capture card
Figure 6 shows an application extension with a hybrid TV tuner front-end and digital
terrestrial channel decoding for DVB-T.
The single-conversion tuner TD1316 provides two dedicated IF signals for the analog
IF-PLL (TDA9886) and the digital IF-PLL (TDA9889). The CVBS (video) and AUD (audio,
mono) output signals of the analog IF-PLL can be routed to one of the video inputs and
Rev. 04 — 11 April 2006
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
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