Most problematic things were tuner clock bypassing, tuner RF bypassing and GPIOs.
AFATECH TECHNOLOGIES DRIVERS
There was existing drivers for all the used chips, so it was "only" tweaking correct setup. Because of dual tuner support it has physically 4 chips and logically even one more (AF9035 integrates AF9033). I had very much troubles in order to get that device working! That was due to very complex hardware configuration. Originally AF9035 was made by Afatech and later Afatech was acquired by ITE Technologies. Last one reveals it is clearly reference design. Content is read by AF9035 on startup.ģ6.000 MHz crystal is for FC0012 RF-tuners. Eeprom is used to tell device hardware confguration for AF9035. Markings are not clearly visible, but looks like letters are "402RP", which I could guess is 24C02RP.
AFATECH TECHNOLOGIES SERIAL
The only and the one 8 pin IC is 2k serial eeprom. That side of PCB is quite empty and boring. RF-input, antenna wire, is also bypassed from tuner to other. Only one crystal is needed as tuner has clock bypass. 36.000 MHz clock is feed from the crystal that is located another side of PCB. There is also I2C bus between each demodulator and tuner pair, but it is not easily visible. It is baseband (aka Zero-IF) interface to feed signal from tuner to demodulator. From that picture it could be easily seen 4-wires going from both tuners to AF9033/AF9035. First FC0012 is connected to the AF9035 and second one to AF9033, both TS and I2C buses.įC0012 tuner is based of direct-conversion architecture. TS bus feeds data and I2C is used for control. Two wires going through resistors R23 / R24 is likely I2C bus. That four wire bus, going through resistor network RP1, is most likely serial TS. There is clearly visible 4 + 2 wires between AF9033 and AF9035. AF9033 gets clock from AF9035, own crystal is not needed for that kind of dual configuration.
![afatech technologies afatech technologies](https://i.ytimg.com/vi/slye0tdSqpg/maxresdefault.jpg)
Note that AF9035 itself integrates one AF9033 - so there is two AF9033 logically on that device. It is slave demodulator for AF9035 offering 2nd tuner. The most centre big chip is AF9033 DVB-T demodulator.
![afatech technologies afatech technologies](https://de.hama.com/bilder/00062/abx/00062759abx.jpg)
12.000 MHz is very standard USB reference clock. It offers 12.000 MHz clock source for AF9035.
![afatech technologies afatech technologies](https://i.ebayimg.com/images/g/YgcAAOSwyQtVj96A/s-l400.jpg)
There is small metal box, crystal, between AF9035 and USB-connector. That version of AF9035 has also pins to connect slave demodulator using serial TS. Lets still mention it is chip that integrates USB-interface and DVB-T demodulator. I am not going to AF9035 details now as I have explained it quite carefully earlier. Piece of tape between RF-tuner and IR-receiver is avoiding possible short circuit(?).īlack chip most near USB-connector is AF9035. There is two RF-tuners as this device supports dual mode - it could receive two television channel at the time even those channels are delivered using different frequency.īlack component, which is partially top of both tuners, is IR-receiver for remote controller. Two chips, which are partially under piece of tape and located near antenna connector, are FC0012 RF-tuners.
AFATECH TECHNOLOGIES DRIVER
Instead thanks to some anonymous Linux user who donates his device for driver development.ĭevice is supported under Linux starting from the Kernel 3.9.Īll relevant chips are composed to that side of the PCB. I would not like to thank device vendor Cabletech as they didn't even answered my queries about sample device. Device uses chipset vendor reference design USB ID 15a4:1001. It has two independent tuners aka dual tuner model. That device is Afatech AF9035 reference design.