The MSB1221 contains a superior mobile Coded Orthogonal Frequency Division Multiplex (COFDM) demodulator
that is both Nordig Unified 1.0.3/2.0, D-Book 5.0, E-Book, DVB-T (as defined in ETS 300 744 specification) and
MBRAI 2.0 compliant. It can be used in all 2K, 4K, and 8K modes with 5, 6, 7, and 8 MHz channels and is
capable of receiving all modes of transmission.
6, 7, and 8 MHz OFDM channels can be generated from a single 20.48, 24 MHz or a 28.8 MHz crystal.
Alternatively, there is an option to replace this crystal with an external clock input from tuner. A digital filter
with high rejection capability is also added to cope with digital or analog adjacent channels.
maximum flexibility and fast acquisition. It also allows the demodulator to synchronize and extract the TPS
parameters even with a SNR of -5 dB.
tuner and broadcaster without re-programming the tuner. Having superior multipath processing algorithms
provide excellent Single Frequency Network performance.
Combining channel prediction algorithms makes MSB1221 suitable for mobile TV applications.
effects on the quality of digital TV reception.
MSB1221 is a low-power solution packaged in a 7x7 mm 48-pin LQFP.
that is both Nordig Unified 1.0.3/2.0, D-Book 5.0, E-Book, DVB-T (as defined in ETS 300 744 specification) and
MBRAI 2.0 compliant. It can be used in all 2K, 4K, and 8K modes with 5, 6, 7, and 8 MHz channels and is
capable of receiving all modes of transmission.
The device includes a low-power, high performance A/D converter capable of accepting direct IF at 36 or 44
MHz. Furthermore, it supports low IF, and ZIF signaling. Sampling rates required for all these frequencies in 5,6, 7, and 8 MHz OFDM channels can be generated from a single 20.48, 24 MHz or a 28.8 MHz crystal.
Alternatively, there is an option to replace this crystal with an external clock input from tuner. A digital filter
with high rejection capability is also added to cope with digital or analog adjacent channels.
The MSB1221 is able to recover up to +/- 1MHz of the frequency offset. A sophisticated algorithm controls all
acquisition and tracking operations to reduce the scanning time. This mechanism ensures minimum interaction,maximum flexibility and fast acquisition. It also allows the demodulator to synchronize and extract the TPS
parameters even with a SNR of -5 dB.
Blind acquisition mode enables automatic detection of all OFDM signal parameters, including mode, guard
interval, etc. The frequency capture range is sufficient to compensate for the combined offset introduced by thetuner and broadcaster without re-programming the tuner. Having superior multipath processing algorithms
provide excellent Single Frequency Network performance.
Dynamic FFT window positioning enables optimal performance in the presence of changing pre-echo and
post-echo profiles. The position is always optimized even with echoes having a delay longer than guard interval.Combining channel prediction algorithms makes MSB1221 suitable for mobile TV applications.
A unique engine was implemented to filter out the impulse interference without affecting normal performance.
This reduces undesirable influences from vehicles and electrical appliances that are known to have detrimentaleffects on the quality of digital TV reception.
Serial or parallel MPEG transport stream output can be interfaced to commonly available processor chips. There
is also the option for the MPEG stream to be outputted under the control of an external clock signal. TheMSB1221 is a low-power solution packaged in a 7x7 mm 48-pin LQFP.
