[CC2564B] question about PCM loopback mode

Hayden Kim

Genius 15580 points

CC2564B can work as both I2S master and I2S slave.

When "I2S slave", LRCK and BCK should be input, to get PCM_OUT, pcm data signal out, right?

So, is it same with PCM loopback mode?

I mean, with I2S slave and PCM loopback mode, what will happen if LRCK or BCK or BOTH are not provided?

Thanks and regards,

Hayden

over 9 years ago

0 Sundeep Javvaji over 9 years ago

TI__Mastermind 32615 points

Hi,

Let me check it internal and get back to you on this.

0 Miguel over 9 years ago

TI__Mastermind 23565 points

Hayden,

Yes, BCK (MC_CLK) and LRCK (PCM_FSYNC) shall be provided to the CC256x in I2S slave mode. This is just part of the standard. If they are not, neither PCM_IN an be processed nor PCM_OUT can be generated.

~Miguel

Bluetooth®︎

Bluetooth forum

[CC2564B] question about PCM loopback mode