DM6446 / AIC23 intermixed left and right audio output

Hi,

We are using DM6446 and TI MP2 Codec to decode audio with two languages that are encoded on two separate audio channels within a single stream and pass the decoded PCM data to the AIC23; we have observed the languages are alternatively intermixed e.g. left speaker will output English, Spanish, English, Spanish… and right speaker will output Spanish, English, Spanish, English…

We need to have a clean separate language output on the left and right speakers so what could cause this?

Are the settings below correct?

DM6446 ASP McBSP register setting:

Serial Port Control Register (SPCR) = 0x02F10031

        FREE = 1;

        FRST = 1;

        GRST = 1;

        XINTM = 3;

        XRST = 1;

        RINTM = 3;

        RRST = 1.

Receive Control Register (RCR) = 0x10400040

        RPHASE = 1;

        RFRLEN2 = 0 (1 word);

        RWDLEN2 = 2 (16 bits);

        RFRLEN1 = 0 (1 word);

        RWDLEN1 = 2 (16bits).

Transmit Control Register (XCR) = 0x10440040

        XPHASE = 1;

        XFRLEN2 = 0 (1 word);

        XWDLEN2 = 2 (16 bits);

        XFIG = 1;

        XFRLEN1 = 0 (1 word);

        XWDLEN1 = 2 (16bits).

Sample Rate Generate Register (SRGR) = 0x301FFF01

        CLKSM = 1;

        FSGM = 1;

        FPER = 31;

        FWID = 15.

Pin Control Register (PCR) = 0x03 (Runs as Slave)

        CLKXP = 1;

        CLKRP = 1.