ST STi7141 User Manual
STi7141
HD decoder for interactive digital cable set-top box
Data Brief
Features
■ Three integrated cable receiver / demodulators
■ DOCSIS/EuroDOCSIS 2.0 cable modem with
support for DOCSIS 3.0 down-stream channelbonding
■ SCTE-55 part 1 and 2 physical layer support for
CableCARD
■ Dual Core architecture providing mor e than
1600 DMIPS of processing performan ce
■ Linux
■ Firmware based multi-standard HD video
®
decoder for:
– H.264 / MPEG-4 AVC HP@L4
–MPEG-2 MP@HL
–SMPTE VC-1 AP@L3
■ Firmware based multi-standard audio processor
for:
– MPEG-1 I/II/III (MP3), MPEG-2 ACC (AAC-
LC)
TM
, Windows® CE and OS21 compatible
8-ch
S/PDIF
16
PCM Out
2-ch
PCM In
Audio Decoder
Players and
Interfaces
ST231
Analog
Audio
Audio
DACs
Protected JTAG
Dual Core
ST40-300
Mailboxes
64K SRAM
Resets /
Clocks /
Modes
Clock Gen
and
System
Services
3x
FDMA
DDR2
SDRAM
LMI
Out
Video In
– MPEG-4 HE AAC (aacPlus)
®
– Dolby
Digital (AC-3), Dolby® Digital Plus
■ Firmware based PTI (programmable transport
stream processor)
■ DVR support, and trick play modes
■ Dual display HD and SD
■ 2D blitter graphics with extention to pseudo 3D
and video mosaic support
■ Multi-level layered security
■ Interfaces include: USB, Ethernet, HDMI
eSATA.
Description
The STi7141 is a highly integrated SoC (systemon-chip) designed to meet the demanding needs of
the interactive cable set top box market place. The
STi7141 integrates all the major system functions
into a single device, and provides world leading,
multi-layer, advanced security technologies to
protect valuable video and audio assets.
Serial ATA
HDD, int/ext
Digital
DVP
eSATA
Interface
USB
USB
1.1
USB
USB
2.0
USB
USB
1.1
USB
USB
2.0
STB peripherals
and external interrupts
Comms
GPIOs
ILC
2 x I/F
SmCard
3x
UARTs
IR Tx/Rx
UHF Rx
Serial
FLASH
SPI
7x
SSC/I2C
PWM
TM
,
STBus
VTG0
VTG1
Aux video
display
DENC
DVO
HDMI
Digital Video Output
TMDS
DEI
Main video
display
PCI
EMI
EMI/MPX/PCI
EMPI
DSMA USMA
DOCSIS 2.0+ MAC
QAM/
FEC
QAM/
FEC
QAM/
RC
FEC
Digitized Cable Channels
TSMerger
MCARD
Interface
PTI
PTI
Blitter
HD
Video Decoder
ST231
2x
Ethernet
MAC
GMII / MII
Display
Main/Aux
COMPOSITOR
Cursor
3xGDP
Router and
Formatter
6DACs
Analog Video
Output
(HD/SD)
September 2008 Rev 1 1/6
For further information contact your local STMicroelectronics sales office.
www.st.com
6
Applications STi7141
1 Applications
The STi7141 is a low-cost, networkable, HDTV set-top box device, with an embeded
DOCSIS cable modem capable of providing DSG (DOCSIS set-top gateway), interactive
multimedia and internet access for the digital cable mar ket.
The STi7141 provides an enhanced performance, lower-cost replacement to the two-chip
solution STv0498 and STi7109.
The following figures describe typical set-top box applications based on the STi7141. These
applications maintain a high degree of software compatibility with set-top box designs based
on the STv0498 and STi7109.
Figure 1. STi7141 applicatio n: HD input SD disp lay c able set-top box pla tform with DOCSIS 2.0
DDR 2 DDR 2
Cable
MSCC
RJ45
USB 2
USB
Power supply
components
Silicon
tuner
Silicon
tuner
PGA
MoCA
MAC
and PHY
Ethernet
PHY
Power on
reset
Secure
micro
LMI
FAT1
FAT2
STv0130
RDC
GMII
MSCC
LMI
Composite
S-Video
Audio
S/PDIF
Ch 3/4
Filter
Opto
RF
Comp
S-Vid
Audio
S/PDIF
STi7141
MII
USB 2.0
USB 1.1
USB 1.1
EMI
Flash
USB 2.0
IR
Opto
USB 2
IR
2/6
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