PRODUCT

TMS320DM355

Digital Media System-on-Chip (DMSoC)

www.ti.com

SPRS463A –SEPTEMBER 2007 –REVISED SEPTEMBER 2007

Table 5-34. Switching Characteristics for I2C Timings(1) (see Figure 5-40)

 

 

 

 

DM355

 

 

NO.

 

PARAMETER

STANDARD

FAST MODE

UNIT

 

MODE

 

 

 

 

 

 

 

 

 

MIN MAX

MIN

MAX

 

16

tc(SCL)

Cycle time, SCL

10

2.5

 

μs

17

td(SCLH-SDAL)

Delay time, SCL high to SDA low (for a repeated START

4.7

0.6

 

μs

condition)

 

 

 

 

 

 

 

18

td(SDAL-SCLL)

Delay time, SDA low to SCL low (for a START and a repeated

4

0.6

 

μs

START condition)

 

 

 

 

 

 

 

19

tw(SCLL)

Pulse duration, SCL low

4.7

1.3

 

μs

20

tw(SCLH)

Pulse duration, SCL high

4

0.6

 

μs

21

td(SDAV-SCLH)

Delay time, SDA valid to SCL high

250

100

 

ns

22

tv(SCLL-SDAV)

Valid time, SDA valid after SCL low (For I2C devices)

0

0

0.9

μs

23

tw(SDAH)

Pulse duration, SDA high between STOP and START

4.7

1.3

 

μs

conditions

 

 

 

 

 

 

 

28

td(SCLH-SDAH)

Delay time, SCL high to SDA high (for STOP condition)

4

0.6

 

μs

29

Cp

Capacitance for each I2C pin

10

 

10

pF

(1)Cb = total capacitance of one bus line in pF. If mixed with HS-mode devices, faster fall-times are allowed.

CAUTION

The DM355 I2C pins use a standard ±4-mA LVCMOS buffer, not the slow I/OP buffer defined in the I2C specification. Series resistors may be necessary to reduce noise at the system level.

PREVIEW

SDA

23

19

20

SCL

16

22

18

Stop Start

21

28

 

18

 

17

Repeated

Stop

Start

 

Figure 5-40. I2C Transmit Timings

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Peripheral Information and Electrical Specifications

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Texas Instruments TMS320DM355 warranty Switching Characteristics for I2C Timings1 see Figure, Stop Start

TMS320DM355 specifications

The Texas Instruments TMS320DM355 is a versatile digital signal processor designed to support a wide array of multimedia applications, specifically in the realms of digital video and audio processing. As part of the TMS320 family of digital signal processors, the DM355 brings a blend of computational power, energy efficiency, and integrated features that make it highly effective for tasks such as video encoding, decoding, and general signal processing.

One of the standout features of the DM355 is its advanced DaVinci architecture, which is specifically optimized for multimedia tasks. This architecture integrates both DSP and application processing functionalities. The dual-core architecture includes a high-performance DSP core that specializes in real-time signal processing alongside an ARM926EJ-S RISC microprocessor, facilitating the execution of complex algorithms and control tasks.

The DM355 offers robust multimedia processing capabilities with support for several video formats, including MPEG-2, MPEG-4, H.264, and JPEG. This enables developers to create powerful video applications for a variety of devices, from industrial systems to consumer electronics. Its processing capabilities extend to audio processing, allowing it to efficiently handle audio codecs and enhance audio quality in applications ranging from IP cameras to set-top boxes.

In terms of connectivity, the TMS320DM355 supports various interfaces including USB 2.0, Ethernet, and various serial interfaces like UART, SPI, and I2C. This wide range of connectivity options ensures that the DM355 can easily interface with different peripherals and network components, making it a suitable choice for networked applications.

Energy efficiency is another significant advantage of the DM355. With a focus on low power consumption, the device is designed to operate effectively in battery-powered and heat-sensitive environments. Its low thermal design power allows for extended operational life and reduced thermal management requirements, making it ideal for portable devices.

Furthermore, the DM355 is supported by a comprehensive software development framework, including the TI Code Composer Studio and a range of middleware tools, which streamline application development and speed up time to market. Its rich ecosystem enhances its usability across different applications, ensuring that developers can leverage the full potential of the hardware.

In summary, the Texas Instruments TMS320DM355 stands out as a powerful yet cost-effective DSP solution, combining advanced multimedia processing capabilities, robust connectivity options, and energy efficiency. Its unique architecture and extensive support resources make it a preferred choice for developers seeking to create innovative multimedia solutions.