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TC9446FG Datasheet

  • TC9446FG

  • Audio Digital Processor for Decode of Dolby Digital (AC-3), ...

  • 41頁

  • TOSHIBA

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TC9446FG
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC9446FG
Audio Digital Processor for Decode of Dolby Digital (AC-3), MPEG2 Audio
TC9446FG is the various digital signal processor for decoding.
It contains the decode processing program which embraced
encoding signals, such as Dolby Digital (AC-3)/Pro Logic (Note 1),
MPEG2 audio and DTS (Note 2).
Decoding of Dolby Digital or MPEG2 audio is made with a
single chip. Moreover, an external memory can be connected to
the TC9446FG to decode DTS.
Features
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Dolby digital (AC-3) or MPEG2 audio decode
Acceptable bit rate upto 640 kbps
Audio interface
4 output port, 2 input port (2 port of LRCK and BCK)
DIR (digital audio interface receiver) built-in
DIT (digital audio interface transmitter) built-in
DIR and DIT are available upto 96 kHz sampling of 2 channel
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Operating clock: DLL oscillator upto 6th times for DSP clock
Instruction cycle: 20 ns/1 instruction at 50 MIPS operation
DSP
Processor: 24 bit 脳 24 bit + 51 bit multiplier and adder, 51 bit ALU
Data bus: 24 bit 脳 3
Data RAM: 12 k word
Coefficient ROM: 4 k word
Program ROM: 12 k word
Program RAM: 128 word
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MCU interface: Serial interface or I
2
C bus interface
Others
It is possible to connect external RAM, 256 k or 1 M SRAM
External interruption input terminal
Flag input terminal: 4 inputs
P-QFP100-1420-0.65Q
Weight: 1.57 g (typ.)
General-purpose output port: 8 outputs (The ports can be used as interrupt outputs to MCU and logic control
outputs.)
incorrect operation detect
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Operating Voltage: 3.0 鹵 0.3 V
In CMOS structure and high-speed processing
100 pin flat package design
Note 1: 鈥淒olby鈥? 鈥淧ro Logic鈥? and the double-D symbol are trademarks of Dolby Laboratories.
Note 2: 鈥淒TS鈥?and 鈥淒TS Digital Surround鈥?are registered trademarks of Digital Theater Systems, Inc.
Note 3: Since this product has a weak terminal in serge voltage, please advise handling it enough.
1
2005-09-28

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