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DAC38RF89: Sync Source Control Register

user6193156
Intellectual 290 points
Part Number: DAC38RF89

The Sync Source Control  Register (0x127 or 0x227) has four sync sources(auto-sync from SPI register write,sysref,sync_out from JESD,mem_spi_sync).

What is the difference between them? When should each sync source be used?

Are there any examples?

  • 0
    TI__Guru* 91947 points

    User,

    If bit 0 = auto-sync from SPI register write is set, a SYNC is issued after writing to this register. See section 8.4.5.1 of the data sheet for more info regarding this one.

    If bit 1 = sysref is set, every pulse of SYSREF will SYNC this register. This is required when trying to synchronize multiple DAC's.

    If bit 2 = sync_out from JESD is set, after the JESD comes out of initialization this register will get synchronized.

    If bit 3 = mem_spi_sync is set, when writing a "1" to bit 1 of address 0x28, this register will get synchronized. This allows the user to re-sync using software.

    Regards,

    Jim