TL7231MD Datasheet, PDF (1/37 Pages) Samsung semiconductor – FULL LAYER-III ISO/IEC 11172-3 AUDIO DECODER

TL7231MD
FULL LAYER-III ISO/IEC 11172-3 AUDIO DECODER
n Single-chip ISO/IEC 11172-3 Layer n 6-Band Equalizer Function
III Audio Decoder
n Voice Record/Playback Capability
n Supports All MPEG Bit Rates
Including Free Format
n On-chip DAC with 1-bit Sigma Delta
Modulation
n
Supports 32/44.1/48KHz Sampling
Frequencies for MPEG Bit Stream
n
Supports Off-chip DAC Interface
n Supports Single Channel, Dual
n On-chip ADC with 12-bit Resolution
Channel, Stereo, and Joint Stereo ^{n Power Management to Reduce}
n Any Combination of Intensity
Stereo and MS Stereo is
Power Consumption
n PLL for Internal Clocks and for
supported.
Output PCM Clock Generation
n Serial Bit Stream Input
n 8-bit Host Interface Port
n Digital Volume Control
n Digital Bass/Treble Control
n Single 16.9344MHz External Clock
Input
n 3.0 V Operation
n Small Footprint 100-pin Thin Quad
Flat Package
DESCRIPTION
TL7231MD is a single-chip ISO/IEC 11172-3 Layer III audio decoder, capable of decoding
compressed elementary bit streams as specified in ISO/IEC standard. Since it integrated on-
chip ADC and on-chip DAC, it can provide you more small and cheaper solution for MP3 player
application. It is designed to be well suited for portable audio appliances.
TL7231MD receives the input data bit stream through a serial data interface. The decoded
signal is 16-bit serial PCM format that can be sent directly to DAC. The generated PCM data
can be sent to on-chip DAC or off-chip DAC according to user preference. The off-chip DAC
interface is programmable to adapt the PCM output of TL7231MD to the most common DACs
used on the market.
An 8-bit host interface port is provided to receive control information from and send status
information to host. 8-bit microcontrollers such as those of Intel or Motorola can be connected
easily.
TL7231MD has the capability of compressing voice signals. It can receive voice signals through
on-chip ADC. The compressed voice signals are transmitted to or received from host through
serial data interface. It can also reproduce the voice signals from the compressed voice signals.
September 1999
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