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 on hrm Septemberat The Serialized output from the serializer is fed to the SPI0 port of the processor.
The sample code for Handle allocation and initialization from the example application is shown below. The time availability check for cyclic packets means to basically check whether the zm335x packet can be transmitted such that its transmission does not overlap the next cyclic trigger, considering the size of the acyclic packet. The members of PRU statistics are listed in the memory map. In addition to these there is 1 collision queue each for Host and 2 ports which can hold one packet irrespective of packet size.
Boot Peripheral Options – ARM Cortex-A8 Based Products – Critical Link Support
Another important difference which is obvious from the name is that an EMAC does not forward a packet from one port to another like a Switch. This article builds upon the foundation outlined in it. The sizes are limited by L3 size which are dictated by SoC. Views Read View source View history. For am335x take a look at the link interrupt mapping.
It is important to differentiate between the two different types of implementations in SDK context because this keeps coming up while discussing SDK and it’s components.
Queue 0 high priority queue is reserved as the real-time queue. As of now the multicast and broadcast storm prevention functionalities are clubbed together but it is proposed to have am335z separate in the future.
USB power 5V is provided to this connector through a buck-boost converter circuit. It expects the application to do following MDIO operations. Developers must take care to maintain correct priorities and order so as not to alter the behavior of the driver.
The Pin use description file provides us the information on the pin functionality mode selected. If the counter value is 0 then the packet is dropped.
There is no restriction on the number of acyclic packets sent out in each cycle but it is contingent on time availability. Codes to show the configuration setup on this board. NOTE When a queue overflows, packets are not automatically copied to the next free queue. Please note as of Wednesday, August 15th, this wiki has been set to read only. They are enabled by default and provide provide port specific statistics.
This provides reliability for real time traffic. Apart from the above four user keys, the design also has a button to interrupt the processor via the non maskable interrupt pin. Similar to enablement, variable set to False. This is done in the following line defined in main. It can be set as per the application requirements. Technical Reference Manual for an SoC. A brief summary is provided below to explain where the data is copied to, how and why.
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. This corresponds to a boot sequence of:. It is also used during power-up to make sure the microprocessor and all its modules start their operation from a known state. IP address, network mask and other params can be set through the NDK configuration file.
The EVM has a rotary switch that allows a slave address to be selected. Boot configuration pins are latched upon de-assertion of PORz pin. So overflow can occur.
The answer is that channels allow us to map multiple PRU User interrupts and system interrupts to a single channel and in turn to a single ARM interrupt. This page has been accessed 51, times.
AMx Industrial Communication Engine EVM Rev2 1 HW User Guide – Texas Instruments Wiki
There is one table am353x each physical port. This flash is connected to the SPI0 port of the processor. The advantage of pacing is that a greater throughput is achieved while disadvantage is that if any critical packets need to be serviced immediately, it’s possible that some delay may occur.
As one can see most of the members are identical to that of PRU statistics they are a subset and if all packets are sent to the Host then these member values for PRU and Host statistics should match. This is easier than trying to connect an emulator sm335x reading the values at run time.
OSD335x Reset Circuitry
This page was last modified on 27 Februaryat If a callback is not registered then the queue is just emptied to prevent queues from overflowing. Retrieved from ” http: The actual capacity may be lower owing to collisions. The PRU’s then assert an interrupt to tell the Host about the presence of a packet. Any button press duration which is lower than this value is ignored, considered an accidental touch.
The flowchart shown above shows the sequence in very broad strokes.
This is a 12 character string which is: Cold Reset and Warm Reset. Serial number of the board. It will go high only when the power on all power rails are stable as shown in Figure 1. A basic understanding of it goes a long way in explaining the software architecture and if a developer is only trying to use the Rx and Tx capabilities of EMAC or Switch a knowledge of this is sufficient to build an application.