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  Introduction
  지상파DMB 및 유럽 DAB 수신기용 baseband SoC로써 Eureka-147 demodulator, programmable audio decoder, 4M byte SDRAM 및 다양한 I/O interface를 내장하고 있으며 소비전력 60mW 이하의 저전력으로 구현하여 특히 휴대용 단말기에 적합하며, 차량용 이나 가정용 단말기 등에 응용될 수 있습니다.
  Features
   
 
Eureka-147 Demodulator
· Support various IF frequency, 0.8 ~ 2.048MHz, including 38.912MHz
· 10-bit ADC integrated
· Automatic gain control for RF IC
· Support all modes, mode I, II, III, and IV of ETSI 300-401.
· TII decoding
· Fast sync acquisition within 2 physical frames at -80dBm
· Frequency offset correction of up to 64 subcarriers (in mode I)
· Digital AFC with resolution of 1Hz
· FIC decoding
· Simultaneous decoding of up to 8 service components
· Up to 8 packet mode or data group mode data decoding with CRC
· Seamless dynamic reconfiguration
· Convolutional deinterleaver and (204,188) RS decoder in T-DMB standard.
· Descrambler compliant with ETS 300 174

Audio Decoder
· MPEG 1/2 Audio L2, 48K/24K sample rate
· Support all bit rates in ETSI 300 401.
· MP3 playback
· PAD extraction and decoding
· Automatic fade-in and fade-out filtering
· I2S / SPDIF
Architectural Overview
 
 

Interface
· Intel/Motorola type 8 bit host interface with programmable DMA
· Serial host interface through I2C/SPI
· Serial MPEG2 TS
· USB 1.1 device controller with transceiver
· NAND flash
· I2C master/slave
· 3 SPI ports
· 8 bit ROM/SRAM/NOR flash interface with 24 bit address space
· I2S, SPDIF

 
  Applications
   
  Archimedes는 PMP, MP3 players, car stereo, HI-FI audio와 같은 digital multimedia device에 지상파 DMB 또는 Eureka-147 DAB front-end로 응용할 수 있으며, 10-bit ADC와 4M byte SDRAM을 내장하고 있으므로 생산원가를 절감할 수 있습니다.
소프트웨어 측면에서는 RF IC 제어, FIC decoding, (MOT, BWS, TDC, IP tunneling 등의) Data service filtering기능을 칩 내부에서 수행하므로, high level command protocol의 User Interface 설계가 용이합니다. 또한 Embedded 32-bit RISC processor의 특성상 전용단말기 개발에도 적합합니다.
 
 

T-DMB or DAB Front-End
Personal media players (PMPs), portable game consoles, and telematics terminals are a few of leading products in rapidly emerging digital convergence market. Archimedes is able to reinforce the convergence device with T-DMB feature in reduced development time.

The figure below shows a typical configuration of a multi-media device with the T-DMB front-end. On receiving a T-DMB channel, Archimedes provides the host CPU with the MPEG2 TP stream for the video service and visual radio, PCM data or MUSICAM stream for the audio service, or packet/data group level stream for the data service.

For the data service on the packet mode sub channel, Archimedes can decode the packet address and verify the CRC.

 
 
  Stand-alone T-DMB or DAB Receiver
Using Archimedes with a few components, such as RF IC, flash memory, key matrix, LCD, and an audio DAC, stand-alone DAB/MP3 players can be developed. Archimedes can play MP3 as well as MUSICAM. Other audio formats such as OGG and WMA will be supported in the near future.
USB type T-DMB receivers can also be developed using Archimedes. T-DMB can be played on a notebook computer or PDA by transferring the MPEG2 transport stream through the USB 1.1 port of Archimedes. A software decoder, however, needs to be installed.
 

 

  Physical Information

 
 
 
 

 

  Features
   
 
Eureka-147 Demodulator
· Support various IF frequency, 0.8 ~ 2.048MHz, including 38.912MHz
· 10-bit ADC integrated
· Support all modes, mode I, II, III, and IV of ETSI 300-401.
· TII decoding
· Fast sync acquisition within 2 physical frames at -80dBm
· Frequency offset correction of up to 128 subcarriers (in mode I)
· Digital AFC with resolution of 1Hz
· Simultaneous decoding of up to 8 service components
· Up to 8 packet mode or data group mode data decoding with CRC
· Enhanced packet mode
· Seamless dynamic reconfiguration
· Convolutional deinterleaver and (204,188) RS decoder in T-DMB standard.
· Descrambler compliant with ETS 300 174

Audio Decoder
· MPEG 4 ER-BSAC
· MPEG 4 AAC/AAC+ v1/2
· MPEG 1/2 Audio L2, 48K/24K sample rate
· MP3/WMA/OGG playback
· FM reception
· Automatic fade-in and fade-out filtering
· Equalizer
· I2S / SPDIF
Architectural Overview
 
 

Interface
· Intel/Motorola type host interface
· Serial host interface through I2C or SPI
· Transport stream
· USB 1.1 device controller with transceiver
· NAND flash
· I2C master/slave
· SPI
· IrDA
· UART
· ISO7816
· Remocon
 
  SDK
   
  · RTOS kernel
· Configurable libraries