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).

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=60

• 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 1100000
• Exact datasheet not available but must be similar to MAX2160

MA50159

demodulator

Who is working on a free firmware implementation?

• Felipe Sanches
• Lucas Villa Real

We are not writing code yet. We need to discover the MCU architecture first. But we are actively trying to figure out info about this device and we have one of these in hands to make some tests.