參數(shù)資料
型號(hào)： SAA7201H
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 消費(fèi)家電
英文描述： Integrated MPEG2 AVG decoder
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP160
封裝： 28 X 28 MM, 3.40 MM HEIGHT, PLASTIC, MO-112, SOT-322-1, QFP-160
文件頁(yè)數(shù)： 2/36頁(yè)
文件大?。?/td> 292K
代理商： SAA7201H
1997 Jan 29
2
Philips Semiconductors
Objective specification
Integrated MPEG2 AVG decoder
SAA7201
FEATURES
General
Uses single external Synchronous DRAM (SDRAM)
organized as 1M
×
16 interfacing at 81 MHz; compatible
with the SDRAM ‘lite’ or ‘PC’
Fast external CPU interface; 16-bit data + 8-bit address
Dedicated input for audio and video data in PES or ES
format; data input rate:
≤
9 Mbytes/s in byte mode;
≤
20 Mbit/s in bit serial mode; audio and/or video data
can also serve as input via CPU interface
Single 27 MHz external clock for time base reference
and internal processing; all required decoding and
presentation clocks are generated internally
Internal system time base at 90 kHz can be
synchronized via CPU port
Flexible memory allocation under control of the external
CPU enables optimized partitioning of memory for
different tasks
Boundary scan (JTAG) plus external SDRAM self test
implemented
Supply voltage 3.3 V
Package 160 QFP.
CPU relation
16-bit data, 8-bit address, or 16-bit multiplexed bus;
Motorola and Intel mode supported
Support for fast DMA transfer to either internal registers
or external SDRAM
Maximum sustained rate to the external SDRAM is
9 Mbytes/s.
MPEG2 system
Parsing of MPEG2 PES and MPEG1 packet streams
Double System Time Clock (STC) counters for
discontinuity handling
Time stamps or CPU controlled audio/video
synchronization
Support for seamless time base change (edition)
Processing of errors flagged by channel decoding or
demux section
Support for retrieval of PES header and PES private
data.
MPEG2 audio
Decoding of 2 channel, layer I and II MPEG audio;
support for mono, stereo, intensity stereo and dual
channel mode
Constant and variable bit rates up to 448 kbit/s
Audio sampling frequencies: 48, 44.1, 32, 24, 22.05 and
16 kHz
CRC error detection
Selectable output channel in dual channel mode
Independent volume control for both channels and
programmable inter-channel crosstalk control through a
baseband audio processing unit
Storage ancillary data up to 54 bytes
Dynamic range control at output
Muting possibility via external controller; automatic
muting in case of errors
Generation of ‘beeps’ with programmable tone height,
duration and amplitude
Serial two channel digital audio output with 16, 18, 20 or
22 bits per sample, compatible with either I
2
S or
Japanese formats
Serial SPDIF audio output
Clock output 256 or 384
×
f
s
for external D/A converter
Audio input buffer in external SDRAM with
programmable size (default is 64 kbit)
Programmable processing delay compensation
Software controlled stop, pause, restricted skip, and
restart functions.
MPEG2 video
Decoding of MPEG2 video up to main level, main profile
Nominal video input buffer size equals 2.6 Mbit for Video
Main Profile and Main Level (MP@ML)
Output picture format: CCIR-601 4 : 2 : 2 interlaced
pictures; picture format 720
×
576 at 50 Hz or 720
×
480
at 60 Hz
3 : 2 pull-down supported with 24 and 30 Hz sequences
Support of constant and variable bit rates up to 15 Mbit/s
Output interface at 8-bit wide, 27 MHz UYVY
multiplexed bus
Horizontal and vertical pan and scan allows the
extraction of a window from the coded picture
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PDF描述
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