1

Function description

The STA660 can demodulate and decode two digital radio streams in parallel thus allowing to implement a DAB

foreground plus DAB background application.

1.1

DAB/DAB+/DMB-A signal processing

The STA660 detects, acquires, and demodulates DAB/DAB+/DMB-A signal. Such functions are primarily

implemented by dedicated hardware accelerators. The demodulated signal is then processed for audio decoding

and service decoding by the ARM9 processor or Xp70 DSP.

The STA660 is able to simultaneously demodulate two different DAB/DAB+/DMB-A signals radio streams. This

feature allows the device to decode one digital radio audio/data stream in parallel with the reception of a data

service broadcasted on a different radio channel.

In the single channel implementation (single RF tuner) the STA660 demodulates at the same time both the audio

and the data carried inside a single ensemble. This means that the user can both listen to audio and receive

traffic information or data broadcasted on that specific single ensemble.

In the dual channel implementation the STA660 can simultaneously demodulate audio and data associated to

different ensembles. This means that it is possible to receive traffic information broadcasted on ensemble A while

listening to audio program broadcasted on ensemble B.

1.2

Overview of main functional blocks

LVDS

Interface

LVDS

Interface

DAB/ DAB+/ DMB

Channel Decoder

GAPGPS02976

Tuner1

Tuner2

DSP

PLL

System

Xp70 DSP

I-RAM

D-TCM

I2S

Host Interf

UART

SDRAM Ctrl

SPI Flash Interf

ROM

RAM

I-TCM

D-TCM

ARM946

STA660

Function description

DB3863 - Rev 1

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