What are the audio multiplexer register settings for “Internal Network Mode Example 3” in the i.MX Reference Manual

[linearcorpengr]

What are the audio multiplexer register settings for “Internal Network Mode Example 3” in the Reference Manual?

Below is the register setup I tried. Using the below register settings I get NO audio.  It is interesting to note that if I set mode=0 in the below code then audio works between int_port 1 and ext_port 5.

int_port = 1;

ext_port = 5;

other_port = 3;

int_port--;

ext_port--;

other_port--;

// setup internal port 1 (int_port)

ptcr = IMX_AUDMUX_V2_PTCR_SYN |

IMX_AUDMUX_V2_PTCR_TFSDIR |

IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |

IMX_AUDMUX_V2_PTCR_TCLKDIR |

IMX_AUDMUX_V2_PTCR_TCSEL(ext_port);

pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port);

imx_audmux_v2_configure_port(int_port, ptcr, pdcr);

// setup external port 3 (other_port)

ptcr = IMX_AUDMUX_V2_PTCR_SYN;

pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port);

imx_audmux_v2_configure_port(other_port, ptcr, pdcr);

// setup external port 5 (ext_port)

ptcr = IMX_AUDMUX_V2_PTCR_SYN;

pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(int_port) |

IMX_AUDMUX_V2_PDCR_MODE(1) |

IMX_AUDMUX_V2_PDCR_INMMASK(0x05);

imx_audmux_v2_configure_port(ext_port, ptcr, pdcr);

[linearcorpengr]

Here are the register values.  Any ideas why the audio would not work? 

Audio works between port 1 and port 5
------------------------------------------------------------
int_port=1 ptcr=a5000800 pdcr=00008000
ext_port=3 ptcr=a5000800 pdcr=00008000
ext_port=5 ptcr=00000800 pdcr=00000005

Audio fails between port 1 and port 5
------------------------------------------------------------
int_port=1 ptcr=a5000800 pdcr=00008000
ext_port=3 ptcr=a5000800 pdcr=00008000
ext_port=5 ptcr=00000800 pdcr=00000105

[linearcorpengr · Accepted solution]

Ooops - my bad.  INMMASK is backwards. 

0  includes signal for ANDing
1  excludes signal from ANDing

Audio works between port 1 and port 5
------------------------------------------------------------
int_port=1 ptcr=a5000800 pdcr=00008000
ext_port=3 ptcr=a5000800 pdcr=00008000
ext_port=5 ptcr=00000800 pdcr=000001fe