QAMI5107 Datasheet, PDF (4/6 Pages) STMicroelectronics – Low-cost QAM demodulator and MPEG2 decoder SOC for set-top boxes

Applications
■ On-chip peripherals
– 2 ASCs (UARTs) with Tx and Rx FIFOs
– 3 banks of 8-bit and 1 bank of 7-bit parallel I/O
– 1 smartcard interface and clock generator
– 2 SSCs for I²C /SPI master/slave interfaces
– Infrared transmitter/receiver
– Integrated VCXO
– Low-power / RTC / watchdog controller
● JTAG/TAP interface
QAMi5107
2
Applications
The QAMi5107 is targeted at worldwide cable markets that use ITU-T J83 Annexes A/C or
DVB-C specifications. It provides a single chip solution for the following functions: QAM
demodulation, FEC, transport, descrambling, MPEG a/v decoding, CPU, graphics and
peripherals. Few external components are required to realize a complete STB solution
resulting in very low BOM cost. The QAMi5107 is perfectly suited for digital conversion of
existing analog networks as well as providing advanced security enhancements and system
cost down for designs currently using the QAMi5516 and STx5105/STx5107.
Figure 1. QAMi5107 application diagram - low-cost Cable STB
Smartcard
Flash
SDRAM
FMI
Cable
IF
Tuner
TSOut
LMI
Audio L/R
TSIn
PIO
ST8024
I²C
E2 PROM
QAMi5107
Video
RGB, YC, Cvbs
Tx/Rx
IR
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