Burst Length of EPI

Hiroyasu Tazawa1

Hi, Everyone

I have a question about EPI of TM4C129x.
I use Host bus mode/ Burst mode.

Which register should we use to set Burst length ?
I think We should set PSRAMSZ bit of EPIHB16TIME register.

This understanding is correct ?

Best Regards
Hiroyasu

over 9 years ago

0 Amit Ashara over 9 years ago

TI__Guru**** 244400 points

Hello Hiroyasu,

The Burst on the bus is controlled by the amount of word access requested by the device and not by the PSRAMSZ of the EPIHB16TIME register. If the CPU performs a single word access then only 2 half words will be read from the external memory. On the other a LDMIA instruction will lead to a longer burst on the interface,

Regards
Amit

0 Hiroyasu Tazawa1 over 9 years ago in reply to Amit Ashara

Guru 12350 points

Hi, Amit

It was late. Thank.you!

Best Regards
Hiroyasu

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Burst Length of EPI