STMICROELECTRONICS QAMI5107

QAMi5107
Low-cost QAM demodulator and MPEG2 decoder SOC
for set-top boxes
Data Brief
Features
■
ITU-T J.83 A/C, DVB-C, TSMF compliant
■
Full video and audio decoding features
■
Comprehensive on-chip peripherals
■
Advanced security ready, compatible with
latest CA requirements.
Initial demodulator
IB_IN_P
ADC
IB_IN_M
Adjacent filter
Symbol timing recovery
Nyquist filter - Digital AGC
Signal quality
estimator
GPIO/AGC1
BER Tester
Carrier recovery
AGC and
delayed AGC
GPIO/AGC2
Phase noise tracker
GPIO switching matrix
GPIO/LOCK
GPIO/IT
GPIO/SCLT
GPIO/SDAT
Pre and post echo adaptive equalizer
FEC Annex A and C
De-interleaver
Reed - Solomon FEC decoder
Descrambler
Lock status
IT generator
I2C Repeater
GPIO/CS0
TS_DATA[7:0]
GPIO/CS1
M_SYNC
TSMF function
Output
formatter
to all blocks
NRESET
A
M_CKOUT
Clock
generator
Z0
M_ERR
JTAG controller
ST20 C1 core 200 MHz
JTAG
DCU
2K SRAM
JTAG[4:0]
SCL
I²C interface
FDMA
Int controller
4K ICache
M_VAL
2D graphics
Blitter display
[email protected]
Video
decoder
SDA
4K DCache
UART (2)
SmartCard 1
IR Tx/Rx
GPIO (4)
16
Comms
peripherals
SSCs (2)
ILC
Comms block
QAMi5107 Interconnect
PTI
PCM
ClockGen
Reset
System services
FMI
TV out
player
S/PDIF
player
Audio
DAC
December 2006
Flash
peripherals
AudioL
AudioR
S/PDIF
Rev 1
For further information contact your local STMicroelectronics sales office.
SDR/DDR
SDRAM
Audio
decoder
Video quad
DACs
16
TS in
16
LMI
DVO
Video output
RGB / YC / CVBS
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Description
1
QAMi5107
Description
The QAMi5107 provides an integrated demodulator/decoder solution for digital cable
receivers for compressed video, sound and data services. A QAM (quadrature amplitude
modulation) demodulator and FEC performs IF to MPEG-2 block processing of QAM
carriers. The demodulated stream is then processed by video and audio decoders.
The device implements a fully unified SDR SDRAM based memory architecture that
integrates the Omega2 video decoder cell together with a blitter engine and a multichannel
DMA controller to provide enhanced performance for graphics and real-time stream
transfers. Transfer of data such as pixmaps, audio streams, stills and PES can be performed
efficiently using the QAMi5107 DMA.
A true-color mode provides OSD graphics allowing the display of RGB16 formats: RGB565,
ARGB1555 and ARGB4444. This directly supports up to 65,536 colors in a region. Alpha
blending by region or by pixel is available for mixing with video and background layers. The
above feature set, guarantees a smooth user interface and high performance for demanding
middlewares such as MHP™.
The QAMi5107 is the first single chip cable STB IC to combine a very low cost solution with
advanced security features. DVB and ICAM descramblers together with a smart card
interface ensure that all the major conditional access systems can be supported.
1.1
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QAM Demodulator features
●
Decodes ITU-T J.83-Annexes A/C and DVB-C bit streams
●
Processes Japanese transport stream multiplex frame (TSMF)
●
High-performance integrated A/D converter suitable for direct IF architecture in all QAM
(quadrature amplitude modulation) modes
●
Supports 16, 32, 64, 128 and 256 point constellations
●
Very low power consumption
●
Full digital demodulation
●
Variable symbol rates
●
Front derotator for better low symbol rate performance and relaxed tuner constraints
●
Integrated matched filtering
●
Robust integrated adaptive pre and post equalizer
●
On-chip FEC A/C with ability to bypass individual blocks
●
10 programmable GPIO
●
Two AGC outputs suitable for delayed AGC applications (sigma-delta outputs)
●
Integrated signal quality monitors, plus lock indicator and interrupt function mapped to
GPIO pin
●
Improved signal acquisition
●
System clock generated on-chip from quartz crystal
●
Low frequency crystal operations 4, 16, 25 - 30 MHz
●
4 I²C addresses
●
Easy control and monitoring via 2-wire fast I2C bus
QAMi5107
1.2
Description
●
Additional I2C bus (I2C repeater) dedicated to tuner control for minimum tuner
disturbance
●
Programmable clock derived from system clock and available for external use
●
Parallel and serial output interfaces, with DVB common interface support
●
On chip voltage regulator
●
CMOS technology, 1.0 V operation
Decoder features
●
Enhanced ST20 32-bit VL-RISC CPU
–
200-MHz, single cycle cache, 4-Kbyte instruction cache, 4-Kbyte data cache, 2-Kbyte
SRAM
●
Unified memory interface
–
●
Programmable flash memory interface
–
●
●
●
■
■
4 separately configurable banks, 8/16-bits wide
–
SRAM, peripheral, flash, SFlash™ support
–
Support for low cost DVB-CI
Programmable transport interfaces (PTI)
–
single transport stream input
–
support for DVB transport streams
–
integrated DVB, ICAM descramblers
MPEG2 [email protected] video decoder
–
●
Up to 166 MHz,16-bit wide SDRAM interface and 133 MHz DDR interface
Fully programmable horizontal and vertical SRCs
Graphics/display
–
3 display planes
–
8 bpp CLUT graphics, 256 x 30 bits (AYCbCr) CLUT entries, 16 bpp true color
graphics, RGB565, ARGB1555, ARGB4444 formats. Link list control
–
Alpha blending, antialiasing, antiflutter, antiflicker filters
–
2-D paced blitter engine with fill function
–
Blitter based display compositor
–
Digital video output: compliant with CCIR 601/CCIR 656.
PAL/NTSC/SECAM encoder
–
RGB, CVBS, Y/C and YUV outputs with four 10-bit DACs outputs. RGB/CVBS or
YUV/CVBS or YC/CVBS
–
Encoding of CGMS, Teletext, WSS, VPS, closed caption
Audio subsystem
–
MPEG-1 layers I/II decoding
–
Simultaneous MPEG audio decode and output of Dolby streams on S/PDIF
–
IEC958/IEC1937 digital audio output interface
–
Integrated stereo audio DAC system
Central DMA controller
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Applications
■
●
2
QAMi5107
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
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
Flash
SDRAM
FMI
Cable
Tuner
LMI
IF
Audio L/R
TSOut
TSIn
QAMi5107
PIO
Smartcard
Video
ST8024
RGB, YC, Cvbs
I2C
E2 PROM
Tx/Rx
IR
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QAMi5107
3
Revision history
Revision history
Table 1.
Document revision history
Date
Revision
20-Dec-2006
1
Changes
Initial release.
5/6
Revision history
QAMi5107
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