ST STV0900 User Manual

STV0900
Multistandard advanced dual demodulator
for Satellite Digital TV and Data services set-top boxes
Data Brief
Description
Features
Demodulation
– RF interfaces – Each demodultor can handle:
–DIRECTV
DVBS2 QPSK, 8PSK and 16APSK
Digital Nyquist root filter
With 0.20, 0.25, 0.35 excess bandwidth
factors. – DVBS or DIRECTV – DVBS2 broadcasting (CCM) – DVBS2 adaptative (ACM)
Dual decoding
– Up to 180 Mega DVBS2 channel bits per
second (Mcbps) at input to FEC
– Up to 130 Mcbps DVBS or DIRECTV
legacy per FEC – Legacy DVB-S – DVB-S2
Transport stream management
Dual data to MPEG decoder
Single ACM data to microprocessor
DVB-S2 framing
TM
and DVBS QPSK
TM
TM
Interfaces
– Dedicated 27 MHz clock generation for
back-end decoder
2
–I
C serial bus interface – JTAG interface - boundary scan – 2 DiSEqC
TM
2.x interfaces – GPIOs and interrupt lines – Monitoring through I
Technology
2
C serial interface
– 90 nm CMOS process – Multi supply: 1.0 V core, 2.5 V analog,
3.3 V digital interfaces
– Power saving features
Package
– Exposed PAD LQFP 128 14x14, 0.4 pitch – 4 layer PCB recommended.
December 2006 Rev 1 1/5
For further information contact your local STMicroelectronics sales office.
www.st.com
5
Application block diagrams STV0900

1 Application block diagrams

Figure 1. STV0900 dual broadcast application block diagram

DiSEqC 2.0
STV0900
diseqc1_o
diseqc1_i
STB6100
STB6100
27MHz
[sdat1, sclt1]
agc_rf1
[Im1,Ip1]
[Qm1,Qp1]
xtal_i
[sdat2, sclt2]
agc_rf2
[Im2,Ip2]
[Qm2,Qp2]
STi710X
[sda,scl]
[d1<0>, clkout1, strout1,
d/p1,
error1]
clkout_27
[d2<0>, clkout2,
strout2,
d/p2,
error2]
27MHz
Possible broadcast configurations are:
dual DVBS or dual DIRECTV
dual DVBS2 decoding with dual TS output,
DVBS or DIRECTV
2/5
TM
legacy and DVBS2 decoding with dual TS output.
TM
legacy decoding with dual TS output,
diseqc2_o
diseqc2_i
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