Timeframe: 1999-2002 (including side projects)
Type: Own development of HW&SW
Status: Engineering samples available at BayCom, later licensed to Terratec (DR Box 1)
Keywords: DAB, USB, 8051, FPGA, VHDL, PCB design, Linux and Windows drivers
- PCB containing
- DAB receiver module (Bosch DFIRE-1)
- FPGA (FIFOs, glue logic)
- Anchor/Cypress EzUSB with 8051 core
- Audio DAC
- SPDIF converter
- LCD and keyboard interface
- Power supply
- 8051 firmware
- FPGA download
- Controlling DAB module via USB commands
- USB handling of I2S (192kbyte/s) and RDI (384kByte/s)
- Full DAB radio in standalone mode
- Windows and Linux drivers
- RDI and control interface to user level application (DAB-Server, data service decoders)
The Box can be attached to any computer with USB port.
The Terratec DR-Box 1 is software compatible with our DAB-USB. If you want to use the DR-Box 1 with Linux, you need the packages dabusb-linux-drivers and dabusb-linux-i386 from our download page.
Technical data of the DAB-USB-Interface:
- Operating System: Linux, 2000, XP
- Port: USB (Universal Serial Bus) for RDI und decoded Audio (I2S)
- Receiver: Bosch DFIRE-1, (DFIRE-2 from 02/2000)
- Analog audio outputs: 1 fixed volume (line output), 1 variable volume (headphones output)
Fig: DAB-Server architecture
The ‘DAB server’s communication protocol is based on HTTP and supports these features:
- Web-based and authenticated configuration of server parameters, like tuned frequency etc.
- User accessible statistic page of tuned ensemble.
- Simple HTTP-based API to retrieve FIGs,
- Streamserver support for MPEG- and Packet-data-streams.
- Playlist support for all common MPEG players like ” winamp, xmms etc.
The Data-Decoder is a client-application that supports these features:
- Decodes all known packet types of PAD and Packet streams (MOT 2.4, Dynamic label, XPAD, IP Over DAB, DGPS via DAB)
- All decoded data can be displayed using any web browser.
- All dataservices of an ensemble are decoded simultaneously.
- Dynamic labels are kept in a history list.