qami5107 STMicroelectronics, qami5107 Datasheet - Page 4

• Manufacturer Part Number: qami5107
• Description: Low-cost Qam Demodulator And Mpeg2 Decoder Soc For Set-top Boxes
• Manufacturer: STMicroelectronics

Applications
2
4/6
■
●
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.
On-chip peripherals
Smartcard
–
–
–
–
–
–
–
JTAG/TAP interface
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
QAMi5107 application diagram - low-cost Cable STB
E2 PROM
ST8024
Cable
Tuner
TSOut
TSIn
PIO
I
IF
2
C
Flash
QAMi5107
FMI
SDRAM
Tx/Rx
IR
LMI
Audio L/R
RGB, YC, Cvbs
Video
QAMi5107