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Ethernet Media Access Controller (EMAC) Registers

See Section 2.5.5 for definitions of alignment, code, and CRC errors. Overruns have no effect on this statistic.

5.50.8Receive Jabber Frames Register (RXJABBER)

The total number of jabber frames received on the EMAC. A jabber frame is defined as having all of the following:

∙Was any data or MAC control frame that matched a unicast, broadcast, or multicast address, or matched due to promiscuous mode

∙Was greater than RXMAXLEN bytes long

∙Had a CRC error, alignment error, or code error

See Section 2.5.5 for definitions of alignment, code, and CRC errors. Overruns have no effect on this statistic.

5.50.9Receive Undersized Frames Register (RXUNDERSIZED)

The total number of undersized frames received on the EMAC. An undersized frame is defined as having all of the following:

∙Was any data frame that matched a unicast, broadcast, or multicast address, or matched due to promiscuous mode

∙Was less than 64 bytes long

∙Had no CRC error, alignment error, or code error

See Section 2.5.5 for definitions of alignment, code, and CRC errors. Overruns have no effect on this statistic.

5.50.10 Receive Frame Fragments Register (RXFRAGMENTS)

The total number of frame fragments received on the EMAC. A frame fragment is defined as having all of the following:

∙Any data frame (address matching does not matter)

∙Was less than 64 bytes long

∙Had a CRC error, alignment error, or code error

∙Was not the result of a collision caused by half duplex, collision based flow control

See Section 2.5.5 for definitions of alignment, code, and CRC errors. Overruns have no effect on this statistic.

5.50.11 Filtered Receive Frames Register (RXFILTERED)

The total number of frames received on the EMAC that the EMAC address matching process indicated should be discarded. Such a frame is defined as having all of the following:

∙Was any data frame (not MAC control frame) destined for any unicast, broadcast, or multicast address

∙Did not experience any CRC error, alignment error, code error

∙The address matching process decided that the frame should be discarded (filtered) because it did not match the unicast, broadcast, or multicast address, and it did not match due to promiscuous mode.

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Ethernet Media Access Controller (EMAC)/Management Data Input/Output (MDIO)

SPRUEQ6–December 2007

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Texas Instruments TMS320DM646x Receive Jabber Frames Register Rxjabber, Receive Undersized Frames Register Rxundersized
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TMS320DM646x specifications

The Texas Instruments TMS320DM646x series is a powerful family of digital media processors designed to handle high-performance applications in video, imaging, and audio processing. These devices leverage advanced technologies to deliver efficient processing capabilities for a variety of embedded systems, making them ideal for multimedia solutions.

At the core of the TMS320DM646x is the versatile DSP architecture, which optimizes performance for digital signal processing tasks. This architecture allows for real-time processing, enabling the devices to handle complex algorithms necessary for image and video compression, thereby meeting the rigorous demands of modern multimedia applications.

One of the standout features of the TMS320DM646x series is its dual-core architecture. This consists of a Digital Signal Processor (DSP) alongside an ARM-based application processor. The DSP is predominantly employed for critical processing tasks, allowing it to execute high-throughput data streams efficiently, while the ARM processor manages control tasks and user interfaces. This division of labor enhances overall system performance and responsiveness.

The series supports a wide range of video formats and technologies, including HD video encoding and decoding, which accommodates HD resolution content essential for today’s multimedia applications. Furthermore, the TMS320DM646x integrates hardware accelerators for video compression standards such as H.264 and MPEG-4, which significantly reduce the processing burden on the CPU, resulting in lower power consumption and higher efficiency.

Networking capabilities are another significant feature of the TMS320DM646x. With support for Ethernet, the device can handle streaming media applications and connectivity, facilitating the transmission of high-quality audio and video over the internet. This connectivity is crucial for developing robust IPTV and streaming solutions.

Power management is a primary focus in the design of the TMS320DM646x series. The processors are built to operate efficiently with minimal power consumption, making them suitable for portable and battery-operated devices. The low power characteristics do not compromise performance, enabling high computational capabilities while maintaining energy efficiency.

Overall, the Texas Instruments TMS320DM646x series offers an exceptional combination of processing power, advanced multimedia capabilities, and energy efficiency. It optimally supports a wide array of applications, from video processing and image analysis to audio encoding. This comprehensive feature set, along with its robust architecture, positions the TMS320DM646x as a leading choice for developers in the digital media space.
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