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BCNT specifies the number of “elements” in a “frame” or “line”. Always, a lower numbered queue has a higher dequeuing priority then a higher numbered queue. The set of PaRams gives the user the ability to pre-configure multiple transfer parameters during initialization to minimize application execution time. Each event in the event queue is processed in a FIFO order. How does linking work?

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Navigation menu Personal tools Log in Request account. When one transfer completes, trigger another transfer to run Ex: Please note as of Wednesday, August 15th, this wiki has been set to read only.

Using Indexing Remember this example? One INT per block vs. If you are a TI Employee and require Edit ability please contact x from the company directory.

Processor SDK RTOS EDMA3 – Texas Instruments Wiki

A basic transfer requires the source address, destination address and a count value how much to copy. This discussion should provide a quick introduction to these topics, then conclude with a series of examples that progressively demonstrate more-and-more of the LLD and EDMA3 capabilities. Announcements Most office hours are finalized Assignments up every Wednesday, due next week CS section. In general, the max.

This page has been accessed 2, times. Auth with social network: Before channel transfer starts, the PaRam that is associated with the channel is loaded into the TC.


The APIs are relatively easy to use and most are self explanatory. The global addresses of each EDMA controller can be found in the memory map section of the appropriate device User’s Guide. Registration Forgot your password?

A typical case is hardware FIFO where the read and the write are lle to and from the same locations. For example, if channel X is chained to channel Y, when channel X completes, it triggers channel Y to start transferring. Sample initialization libraries, both for Resource Manager and Driver, are also a part of the package excluding DRx4xx and DM platforms.

EDMA3 Keystone SoC Devices

Other examples include peripherals where the ingress or egress data is written into a fixed memory mapped register. An interrupt occurs 2.

Extra “Reload” parameter sets are available to hold another configuration that can be “reloaded” automatically into Channel X’s registers upon completion of a transfer.

Linking two or more channels together allows the EDMA to auto-reload a new configuration when the current transfer is complete. Instructions to do the same are also provided along with the package. To support multiple side-by-side installations of the product, the product version is encoded in the top level directory, ex. The first completion event is sent when a request is sent to the transfer controller. StarterWare includes Device Abstraction Layer DAL libraries, peripheral programming, and board level example applications that demonstrate the capabilities of the peripherals on the TI processors.


Similarly, if it holds “2”, events are queued on queue number Additionally, the EDMA3CC has devce error detection logic that causes an error interrupt generation on various error conditions For example, missed events, exceeding event queue thresholds, etc.

Figure of the EDMA3 Controller User Guide shows that a completion event can come dveice the transfer request process module and from one of the transfer controllers. Source address Destination address Length or size What options might be useful to perform the transfer? Set the params for the transfers. Porting instructions are also provided to use the package for different platforms and Operating Systems. The channel registers including DMA, QDMA, and interrupt registers are accessible via the global channel region address range, or in the shadow n channel region address ranges.

That is, set is edmz3 static. Compatibility keys are composed of 3 comma-delimited numbers – M, S, R – where: