PCM1791A: Monaural mode selection

Andrew Lykov

Part Number: PCM1791A

Please tell me the correct algorithm for seting the PCM1791A by I2S to Monaural mode PCM1791A.

I tried to do the following:
reset PCM1791A by I2S
set OPE bit "1" (Register 19, DAC operation control)
set MONO bit "1" (Register 20, Monaural mode selection)
set OPE bit "0" (Register 19, DAC operation control).

This algorithm doesn't work.

Help me please!!!!

over 3 years ago

0 Arash Loloee over 3 years ago

TI__Mastermind 24570 points

Hello,

I will take a look at this and let you know what I think is the issue.

Regards,

Arash

0 Arash Loloee over 3 years ago

TI__Mastermind 24570 points

Would you send me the exact script that you are using, i.e, how do you set OPE or MONO to your desired value?

Regards,

Arash

0 Andrew Lykov over 3 years ago in reply to Arash Loloee

Prodigy 10 points

Hellо,

wr_pcm(152, 18, 0b11010000)

wr_pcm(152, 19, 0b00100000)

wr_pcm(152, 20, 00000b1000)

wr_pcm(152, 19, 0b00000000)

wr_pcm(154, 18, 0b11010000)

wr_pcm(154, 19, 0b00100000)

wr_pcm(154, 20, 0b00001100)

wr_pcm(154, 19, 0b00000000)

wr_pcm(address chip, register, data)

Andrey

0 Arash Loloee over 3 years ago in reply to Andrew Lykov

TI__Mastermind 24570 points

Hi Andrey, looking at your codes I am not sure I follow what you are doing, for example for OPE which is B4 seems to me you are changing B5

also in 152, 20, 00000b1000 why you are changing your conventional format?

in general if you mute the part, it will stay in mute until you unmuted again. So with same token are you setting OPE=0 and never bring it back up?

Because of the holidays, TI E2E™ design support forum responses will be delayed from Dec. 25 through Jan. 2. Thank you for your patience.

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PCM1791A: Monaural mode selection