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McASP clocking

Sergey Kolchanov
Prodigy 250 points

Hi all.

Reading McASP User Guide I found that " the receiver can use ACLKX as the
serial clock when the transmitter and receiver of the McASP are configured to operate synchronously." But is it possible for transmitter to use ACLKR as the clock source in any way?

I am using custom board with 6747 DSP with external clock pinned on ACLKR.

Thanks and regards.

  • 0
    TI__Mastermind 43660 points
    Sergey,

    The receiver only has the option to operate synchronously from the ACLKX and AFSX signals. This is achieved when the ASYNC bit in the transmit clock control register (ACLKXCTL) is cleared to 0. You cannot use ACLKR as clock source for synchronous operation. Please refer Section 24.2.4.1.5 in TRM for details on McASP operation when ACLKXCTL.ASYNC = 0.

    Regards,
    Senthil