LinuxLibre:ISDB USB ZINWELL

It is a Digital TV receiver (USB dongle) manufactured by Zinwell Inc. and sold in Brazil by IBAYO. It is compliant with the ISDB-T 1Seg DTV standard (japanese standard adopted in Brazil).

device ID: 5a57:4210 Zinwell

It is very similar to this reference design from Somagic: http://www.somagic.cn/english/product_info.asp?id=57

photos of the device board

• http://www.lucasvr.gobolinux.org/etc/zinwell-up.jpg
• http://www.lucasvr.gobolinux.org/etc/zinwell-down.jpg

ICs used in the device board

Somagic SMI-2020CBE

http://www.somagic-hz.com/product_info.asp?id=57

• Unknown microcontroller
• SPI and I2C interfaces for controling an external tuner and modulator
• USB interface (used to communicate with the PC)

Maxim MAX2163

• Tuner
• Controlled through configuration/status registers accessible at I2C address 0xc0 (write) and 0xc1 (read)
• Datasheet available here

MA50159

demodulator

Who is working on a free firmware implementation?

• Felipe Sanches
• Lucas Villa Real

We have some experimental code available on subversion.