AM335X TRM PDF

AM335X TRM PDF

AMx ARM® Cortex™-A8 Microprocessors. (MPUs). Technical Reference Manual. Literature Number: SPRUH73C. October –Revised. AMx ARM® Cortex™-A8 Microprocessors. (MPUs). Technical Reference Manual. Literature Number: SPRUH73J. October –Revised December . Read about ‘TI: Technical Reference Manual for AMx ARM Cortex-A8 Microprocessors (MPUs)’ on elementcom. TI: Technical Reference.

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This page was last modified sm335x 9 Septemberat This signal is applied until the power supplies are stable and the device can begin normal operation. They are enabled by default and provide provide port specific statistics.

L3 map is not of much use to the developer while DDR map is dynamic and is part of the application. For example take a look at the link interrupt mapping. There are two pacing modes in driver. This page tem been accessed 11, times. This switch selects a 4bit hex value and a I2C converter allows this encoded value to be read by the AMx through the I2C0 port.

The Pin use description file provides us the information on the pin functionality mode selected. Storm prevention is implemented on the two PRU’s as a credit based scheme.

The Serialized output from the serializer is fed to the SPI0 port of the processor. The EVM has a rotary switch that allows a slave address to be selected. The time period of this tick function default ms in combination with credits value decides the rate at which Storm Prevention works. HW Port represents the physical port.

Serial number of the board. The Storm prevention implementation is similar in both PRU’s but implemented separately, so it’s possible to turn it off selectively for each port. The entire reset supervisor circuit can be seen in Figure 3. Cyclic packets are sent at triggered instances, whereas acyclic packets are sent based on time availability, as shown in the figure below.

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Developers are expected to familiarize themselves with the full list of Qm335x calls so that they can utilize all the features provided. There are two expansion connectors provided in the ICE board. All packets in queue 0 are cyclic packets. A reset signal is also applied during device operation when the microprocessor runs into an error condition which is undesirable for the current activity and all other error recovery mechanisms fail. Since broadcast and multicast packets are sent over all the ports of a switch they have the potential to create a storm which drowns all other traffic on the tr, in this regard this is a very important feature for the switch.

The stereo am335c output is terminated in a stereo headphone Jack. PRU avoids corruption and does not write over the memory till the packet is copied by the Host. Pacing is enabled in the driver using the variable intrPacingMode. They are also a great debugging tool and should be the first thing a developer should look at if they suspect any issue with Rx or Tx.

To get the values correctly the memory layout on both sides should be identical. All design files for this lesson can be downloaded here. SPI0 Expansion header pinout is provided below.

This is tem in the implementation of requirements specified by IEEE Codes to show the configuration setup on this board. The driver is written in a manner such that there is very little dependency on the Operating System. Access from PRU1 is also possible, so the separation is only logical, not in hardware. When a packet is received in firmware, the 3 bit PCP field of the VLAN tag is read and the packet is copied to the appropriate queue based on fixed mapping which maps 2 levels out of 8 of QoS to one queue.

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Boot mode selection is determined by the state of pins on J5. Similar to enablement, variable set to False. To overcome this problem, a reset supervisor circuit can be sm335x. So in total there are 15 queues 12 queues in EMAC4 receive queues for Host and 4 transmit queues for each of the two physical ports.

OSD335x Reset Circuitry

The handle is also required as a parameter for most of the external API’s and all IOCTL calls in the driver so it’s important to understand it’s members. The NIMU layer is explained in this guide. The actual capacity may be lower owing to collisions. The sizes are limited by L3 am33x which are dictated by SoC.

This might result in improper functionality.

AMxStarterKitHardwareUsersGuide – Texas Instruments Wiki

For example the line above where PRU user interrupt 0 maps to Host channel 2 can be modified to. Doing so can give incorrect results. It is also used during power-up to make sure the microprocessor and all its modules start their operation from a known state.