VES9600

The VES9600 is a single chip channel receiver for 2K and 8K COFDM modulated signals based on the ETSI specification (ETSI 300 744). The device interfaces directly to an IF signal, which is sampled by a 9-bit AD converter.

The VES9600 performs all the COFDM demodulation tasks from IF signal to the MPEG2 transport stream. An internal DSP core manages the synchronization and the control of the demodulation process.

After base band conversion and FFT, the channel frequency response is estimated based on the scattered pilots, and filtered in both time and frequency domains. This estimation is used as a correction on the signal, carrier by carrier. A common phase error and estimator is used to deal with the tuner phase noise.The FEC decoder is automatically synchronized thanks to the frame synchronization algorithm that uses the TPS information included in the modulation. Finally descrambling according to DVB-T standard,is achieved at the Reed Solomon output.This VES9600 is controlled via an I2C bus. The chip provides a switchable tuner I2C bus to be disconnected from the I2C master when not necessary. The DSP software code can be fed to the chip via the master I2C bus or via a dedicated I2C bus (Eeprom).

Designed in 0.35 mm CMOS technology and housed in a 208-pin MQFP package, the VES9600 operates over the commercial temperature range.