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Apr 11, 2017
07:19 AM
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Apr 11, 2017
07:19 AM
Hello,
I'm having difficulties while developing a SPI driver using the Synchronous Serial Controller of TC1793. The driver (master mode) works perfectly for frequencies under 5 MHz.
If the SPI frequency is increased, an unexpected behavior happens: the CS line goes up while I'm still sending data to TB register. It seems that the TB register isn't being written fast enough (the core is running @ 270 MHz).
Is there any SPI application example other than Dave's generated one (it isn't being helpful) or a FAE contact to support us?
Thanks in advance.
I'm having difficulties while developing a SPI driver using the Synchronous Serial Controller of TC1793. The driver (master mode) works perfectly for frequencies under 5 MHz.
If the SPI frequency is increased, an unexpected behavior happens: the CS line goes up while I'm still sending data to TB register. It seems that the TB register isn't being written fast enough (the core is running @ 270 MHz).
Is there any SPI application example other than Dave's generated one (it isn't being helpful) or a FAE contact to support us?
Thanks in advance.
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3 Replies
Apr 12, 2017
07:18 AM
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Apr 12, 2017
07:18 AM
We need an NDA before we can send any Information. But as hint, did you check Maximum frequency in the user Manual? see product page of TC1793. On the product page there are also Supportíng appnotes.
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Apr 18, 2017
12:27 PM
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Apr 18, 2017
12:27 PM
How can we proceed with the NDA? Yes, it way under it's maximum frequency, according to User's manual it would be capable of handling bauds up to 55 Mbps, however we're having problems at 5 Mbps.
Apr 20, 2017
05:58 PM
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Apr 20, 2017
05:58 PM
Did you try using the DMA to send your data?