TC9446FG Datasheet, PDF (1/41 Pages) Toshiba Semiconductor – Audio Digital Processor for Decode of Dolby Digital (AC-3), MPEG2 Audio

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC9446FG
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
P-QFP100-1420-0.65Q
• Dolby digital (AC-3) or MPEG2 audio decode
Weight: 1.57 g (typ.)
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
• Operating clock: DLL oscillator upto 6th times for DSP clock
• Instruction cycle: 20 ns/1 instruction at 50 MIPS operation
• DSP
Processor: 24 bit × 24 bit + 51 bit multiplier and adder, 51 bit ALU
Data bus: 24 bit × 3
Data RAM: 12 k word
Coefficient ROM: 4 k word
Program ROM: 12 k word
Program RAM: 128 word
• MCU interface: Serial interface or I²C 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
General-purpose output port: 8 outputs (The ports can be used as interrupt outputs to MCU and logic control
outputs.)
incorrect operation detect
• Operating Voltage: 3.0 ± 0.3 V
• In CMOS structure and high-speed processing
• 100 pin flat package design
Note 1: “Dolby”, “Pro Logic”, and the double-D symbol are trademarks of Dolby Laboratories.
Note 2: “DTS” and “DTS Digital Surround” 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