simultaneous use imx6 pads as multiplexed SPI and PCM

[mohsengh]

Hello dears

As we can see in following picture, in CSR8311 Bluetooth module PCM1 pins are multiplexed with SPI and PIO lines.

but in according to below table we can't use imx6solox pads as multiplexed SPI and PCM. Green rows seems to be OK, but red rows is wrong.

Can every one explain this noncompliance.

best regards.

[igorpadykov]

Hi Mohsen

in general such configuration in red can be used, but not simultaneously

configure as ALT3(spi) or as ALT4(ssi), TXFS and RXD will work fine with PCM module.

Could you describe in more details, where this picture was provided, which document.

Best regards
igor
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[mohsengh]

Hi igor

As we can see in following picture, in CSR8311 Bluetooth module PCM1 pins are multiplexed with SPI .

So, for interface with this module i need 5 signal, one for select (SPI_PCM#_SEL) and four selected interface .

IF assign imx6 pads to meet SPI connection(shown in above schematic and below table), we have problem to meet PCM pin connection.

It seams to be shifted signal AUD5_TXFS and AUD5_RXD.

I've created this table from IMX6 reference manual not any documents.

best regards

[igorpadykov]

Hi Mohsen

i.MX6 can not use pad as spi and audmux/ssi (pcm) simultaneously.

Only one function at time can be used.

Best regards
igor

[mohsengh]

Dear igor

Thank you for your reply.

best regards