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Question, i.MX6Q SSI RX by SDMA

Question asked by AVNET JAPAN FAE (team share account) on Mar 25, 2015
Latest reply on Apr 13, 2015 by Yuri Muhin

Dear team,

 

My customer is facing the issue that the RX from SSI by SDMA does not work on their custom board.

They use SDMA for TX/RX from/to SSI of i.MX6.

TX by SDMA works fine but RX does not work.

They use AUDMUX, SSI2 and AUD3 are used to connect with external DSP.

TXD, RXD,TXFS and TXC pins are used.

The following register dump is captured when the TX completion interrupt occurs.

i.MX6 is expected to receive audio data from external DSP at that time but no data has been received.

 

SSI2_SRX:0x00000000

SSI2_SISR:0x000011e1

SSI2_SCR:0x000000bf

SSI2_SIER:0x005000f

SSI2_STCR:0x000001e9

SSI2_SRCR:0x00000189

SSI2_SFCSR:0x00880788

 

AUDMUX

PTCR2:0x94842800

PDCR2:0x00004000

PTCR3:0x8c421800

PDCR3:0x00002000

 

Do you have any ideas about the cause of this issue?

 

Thanks,

Miyamoto

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