OMAP-L138 uPP 32-bit transmit mode

If I have 64-bit data 0x00112233-44556677 from Memory move to uPP port used by 32-bit trasmit-mode.

What's data output  via uPP of CH-A[15:0] and CH-B[15:0] ? (CH-A = 0x00112233, CH-B=0x44556677 or otherwise)

Thank you.