AM1806 uPP DMA

Yasushi Mochizuki

Prodigy 200 points

Other Parts Discussed in Thread: AM1806

Dear All,

I　am making a driver software for uPP interface of AM1806.

Channel A for data reception from FPGA with DMA I

Channel B for data reception from FPGA with DMA Q

I want to stop and cancel DMA Q of Channel B while Channel A is working.

Is there a way to stop and cancel DMA transfer for only Channel B?

over 12 years ago

0 Pubesh over 12 years ago

TI__Mastermind 20790 points

Yasushi Mochizuki,

Thanks for the post.
Yes, you can stop the data transmission through receive or transmit mode.
In transmit mode, WAIT is an input signal and may be disabled using the WAITx bit in UPICR;
In receive mode, WAIT is an output signal.
Kindly refer the section "30.2.5.5 WAIT Signal" at AM1806 TRM(spruh83).

In addition that you can find the software(EZSDK) download link from AM1806 product folder.

0 Yasushi Mochizuki over 12 years ago

Prodigy 200 points

Hi Pubesh,

Thank you for your reply.

(1)When the channel is used for data reception, WAIT signal is controlled by software?

The uPP module doesn't control the WAIT signal?

(2)After I stop the reception by WAIT signal, Can I start the new reception without to assert SWRST?

Thank you for your help.

0 Pubesh over 12 years ago in reply to Yasushi Mochizuki

TI__Mastermind 20790 points

Yasushi Mochizuki,

Please have a look at the below wiki for UPP.
http://processors.wiki.ti.com/index.php/Introduction_to_uPP
The feature of the uPP include:
Optional synchronization WAIT signal with programmable polarity.

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AM1806 uPP DMA