下图为基于TMS320DM644x有VOD使能的IP机顶盒方框图

下图为基于TMS320DM64x™数字媒体处理器的VOD使能的IP机顶盒方框图

The TMS320DM6446/3 leverage TI’s DaVinci™ technology to meet the networked media encode and decode application processing needs of next-generation embedded devices. The DSP subsystem supports a programmable audio/video multimedia engine that provides application
flexibility and support for future CODEC standards. The integrated ARM®-based application processor supports all the required call control,device drivers and network provisioning. The Video Processing subsystem supports functions such as video resizing, On Screen Display (OSD) support, and a full compliment of video I/O capabilities.
Key Features
TMS320C64x+™ DSP performance: 600 MHz
ARM926EJ-S performance: 300 MHz
Video processing subsystem (VPSS) with configurable video/imaging peripheral
Highly integrated peripherals; including video accelerators, (4) DACs,hardware OSD, USB 2.0 and more
Advanced connectivity with 10/100 Ethernet MAC; half or duplex plus QoS support
Ready-to-use application software such as H.264, H.263, MPEG4,G.729ab, WVM9 and more
Supports glueless interfaces for common video and audio formats
Performance real-time image processing, resizing, auto focus and more
DDR2 and SDRAM support
Packaging: 361-pin Pb-Free BGA (ZWT suffix; 0.8-mm pitch)
Applications
Set-top boxes
Networked digital media centers
Home security

TMS320DM6446数字媒体片上系统(DMSoC)方框图

The TMS320DM64x digital media processors offer the industry’s highest performance and are programmable protecting your code investment.On-chip video ports offer an easy connection to video devices and are capable of handling both video and audio encode/ decode for IP-based video infrastructure applications.
Key Features
Performance up to 5760 MIPS at 720 MHz
400/500/600 MHz options also available
Multiple input/output glueless interfaces for common video and audio formats
Performance real-time video encoding, decoding/transcoding between CODECs
Three dual-channel video ports support simultaneous video input/output
Advanced connectivity with 10/100 Ethernet MAC and 66 MHz PCI
Ready-to-use application software such as MPEG4, MPEG2, MPEG1,WMV9, H.263, H.261, M-JPEG, JPEG2000, JPEG, H.264 and more
Applications
IP-based video conferencing and IP-based videophones
Network camera-based surveillance and IP video nodes
Video-on-demand set-top boxes, personal video recorders and digital media centers
Statistical multiplexers and broadcast encoders

TMS320DM642数字媒体处理器方框图

The newest MSP430F20xx low pin-count, ultra-low power MCU series delivers a 500-nanoamp standby mode utilizing unique very-low-power oscillator (VLO) technology. The industry leading 500-nanoamp standby is achieved with all device failsafe features active including zeropower
brown-out reset.
Key Features
Low supply voltage range 1.8 V – 3.6 V
Ultra-low power consumption as low as 500-nanoamp standby,220 μA at 1 MHz, 2.2 V active, 0.1 μA off mode (RAM retention)
Ultra-fast wake-up from standby mode in less than 1 μs
16-bit RISC architecture, 62.5-ns instruction cycle time
Basic clock module configurations:
Internal frequencies up to 16 MHz with four calibrated frequencies to ±1%
Internal very-low-power LF oscillator
32-kHz crystal
External digital clock source
16-Bit Timer_A with two capture/compare registers
On-chip comparator for analog signal compare function or slope A/D (MSP430x20x1 only)
The MSP-FET430U14 offers a completely integrated development environment for only U.S. ＄149
Packaging: 14-pin TSSOP, PDIP or 16-pin QFN
Applications
Self-managed, high-precision A/D
Remote security sensors
Real-time housekeeping
Power management
Flexible “glue” logic

MSP430x20x1功能方框图

The TFP510 and TFP513 provide a universal interface allowing a glueless connection to most commonly available graphics controllers. Some of the advantages of this universal interface include selectable bus widths, adjustable signal levels and differential and single-ended clocking. The DVI interface supports flat panel display resolutions up to UXGA at 165 MHz in 24-bit true color pixel format.
Key Features
Digital visual interface (DVI) compliant
Supports resolutions from VGA to UXGA (25-MHz to 165-MHz pixel rates)
Universal graphics controller interface
12-bit, dual-edge and 24-bit, single-edge input modes
Adjustable 1.1-V to 1.8-V and standard 3.3-V CMOS input signal levels
Fully differential and single-ended input clocking modes
Standard Intel® 12-bit digital video port compatible as on Intel 81x chipsets
Programmable using I2C serial interface
Monitor detection through hot-plug and receiver detection
Packaging: 64-pin TQFP PowerPAD™
Applications
Set-top boxes
DVD recorders/players

TFP510方框图

The TSB43DA42 is a third-generation integrated 1394 Link/PHY solution with an optimized feature set and enhanced performance to enable the next generation of digital connectivity for consumer
electronic devices.
Key Features
Integrated 2-port, 400-Mbps 1394a PHY
DTCP content protection enabled with three 5C ciphers and full AKE performed with hardware assist
Support for IEC61883 including MPEG2, DirecTV™ (DSS), DV and audio (A&M)
Packet insertion and PID filtering for MPEG2 and DSS transmit (partial TS)
Support for PCI, SRAM-like, or 68K-style external CPU interfaces
Higher asynchronous throughput with DMA hardware enhancements for faster OSD and high-speed HDD support
Applications
Digital TVs
Set-top boxes
PVRs
A/V receivers
DVD recorders

TSB430A42方框图

The TSB41AB2 provides the digital and analog transceiver functions needed to implement a two-port node in a cable-based IEEE 1394 network.The cable ports incorporate two differential line transceivers.The transceivers include circuitry to monitor the line conditions as needed for determining connection status, for initialization and arbitration and for packet reception and transmission.
Key Features
Devices are offered in multiple pin count/package types with 1, 2, 3, 4 and 6 ports to fit a variety of applications
Interfaces directly with TI’s link layer devices and will support serial bus data rates of 100, 200 and 400 Mbps
1394a-compliant, features suspend/resume and fly-by arbitration
Provides bus holding buffers for simple and cost-effective single-capacitor isolation
Ultra-low power
Packaging: 64-pin TQFP PowerPAD™
Applications
HDTVs
Set-top boxes

TSB41AB2方框图

The PCF8574 and PCF8574A are two-wire I2C bus™ to 8-bit parallel bus I/O expanders from TI’s I2C logic portfolio. They are designed to provide a simple and cost-effective method to monitor and control several peripheral signals. The difference between the PCF8574 and PCF8574A is the I2C address.
Key Features
• Pin-to-pin compatible and functionally equivalent with competitive offerings. These are offered in a variety of packages including:
20-pin TVSOP (23% smaller than 20-pin TSSOP)
20-pin QFN package (62% smaller than 20-pin TSSOP); industry’s smallest PCF8574 and PCF8574A package
Two-wire I2C bus to eight-bit bidirectional parallel-bus expander
Operating supply voltage from 2.5-V to 6-V VCC
Low standby current consumption of 10 mA maximum (FSCL = 0 Hz)
Open-drain interrupt output to signal a change on an I/O pin
Latched outputs with high-current drive capability for driving LEDs
• Addressed by three hardware-address pins
Applications
Fan control
LED drivers
System monitoring
Temperature sensor monitoring
Push button monitoring
Eight-bit bidirectional

PCF8574/A功能方框图

The TS5A23157 is a dual single-pole, double-throw (SPDT) analog switch designed for 1.65- to 5.5-V VCC operation. The TS5A23157 can handle both analog and digital signals and permits signals with amplitudes of up to 5.5 V (peak) to be transmitted in either direction without clipping. Analog switches in the TS switch product family provide lowpower consumption and high speed while maintaining exceptional signal integrity. Typical applications include analog signal routing, signal gating, chopping and digital signal multiplexing/demultiplexing.
Key Features
Passes both analog and digital signals
Specified break-before-make switching
Low-charge injection
Excellent on-resistance matching
Low total harmonic distortion
1.8- to 5.5-V single-supply operation
Bidirectional data flow with near-zero propagation delay
Benefits
Optimizes circuit routing on densely populated PCBs
Low-power consumption (10 μA at 1.95 V) supports portable applications
Supports both digital and analog applications
Low input/output capacitance minimizes loading and signal distortion
TS5A23157DGSR offers space-saving, low-profile TSSOP (MSOP-10) package

TS5A23157封装和功能图

The PCA9539 consists of two 8-bit configuration (input or output selection),input port, output port and polarity inversion (active-high or active-low operation) registers. At power-on, the I/Os are configured as inputs. The system master can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for each input or output is kept in the corresponding input or output register. The polarity of the input port register can be inverted with the polarity inversion register. All registers can be read by the system master.
Key Features
VCC range: 2.3 to 5.5 V
Low standby current consumption of 1 A max
Open-drain interrupt output to signal a change on an I/O pin
/RESET input which initializes the slave device without de-powering it
Latched outputs with high-current drive capability for driving LEDs
Internal I2C address set by two hardware address pins for use of up to four devices on the I2C bus™
Consists of two 8-bit configuration, input, output and polarity inversion registers
Applications
System monitoring: Fan, LED and temperature
Humidity sensors
Audio control
16-bit bidirectional expansion

PCA9539方框图

The PCA9545A is a quad, bidirectional translating switch controlled via the I2C bus. The SCL/SDA upstream pair fans out to four downstream pairs, or channels. Any individual SCn/SDn channel or combination of channels can be selected, determined by the contents of the programmable
control register.
Key Features
Four bidirectional translating switches
Each channel (SCLn/SDAn) can be selected via I2C bus
Low RDSON switches (10 typically)
VCC range: 2.3 to 5.5 V
Voltage-level translation between 2.5-, 3.3- and 5-V buses
Internal I2C address: 1110 0xx
Two address pins
One to four channels can be selected at one time
Interrupt output signals change on a channel
RESET input initializes the device without de-powering it and deselects all channels
Applications
System monitoring: Fan, LED and temperature
• Mixed voltage I2C systems
• I2C bus expansion

PCA9545A方框图

The PCM1850 is a high-performance stereo analog-to-digital converter that features an input multiplexer (MUX) and wide-range programmable gain amplifier (PGA). The input MUX allows the user to connect up to six stereo sources, which may be selected through SPI (PCM1850) or I2C (PCM1851) control interfaces.
Key Features
Input multiplexer, six stereo channels
PGA gain: +11 to –11 dB range, 0.5 dB step
SNR: 101 dB (typ)
SPI (PCM1850) or I2C (PCM1851) control
Sampling rate: 16 to 96 kHz
System clock: 256 fS, 384 fS, 512 fS or 768 fS
+5 V for analog, +3.3 V for digital
Packaging: 32-pin TQFP, Pb-Free
Applications
DVD recorders
AV amp receivers
CD recorders
MD recorders
Multitrack receivers

PCM1850方框图

Fabricated using the BiCOM-III process, the THS7303 is a low-power,three-channel integrated video buffer. It incorporates a selectable 5thorder Butterworth filter to eliminate data converter images. Each channel is individually I2C configurable for all functions, which makes it flexible
for any application. Its rail-to-rail output stage allows for both AC and DC coupling applications, and the 6-dB gain along with built-in SAG correction allows for maximum flexibility as an output video buffer.
Key Features
3 video amps for CVBS, S-Video, YUV, SD/ED/HD YPBPR and RGB
I2C control of all functions
Integrated low-pass filters
Selectable input bias modes
2:1 input MUX allows multiple input sources
Built-in 6-dB gain (2 V/V)
Single supply: 2.7 V to 5 V
Low quiescent current: 16.6 mA
Differential gain/phase: 0.13%/0.55° at 3.3 V
Applications
Set-top box output video buffering
PVR/DVDR output buffering
USB/Portable video buffering