PCM1864 8 channel MUX select

Xiao Zhu2

Expert 3215 points

Other Parts Discussed in Thread: PCM1864

Hello Team

My customer want to use PCM1864 8 channel. The question is how to use MUX to select the channel?

over 8 years ago

0 Don Dapkus over 8 years ago

TI__Guru**** 189399 points

Hi, Xiao,

This is described in the data sheet:

www.ti.com/.../detailed_description
www.ti.com/.../detailed_description

Let us know if you have any further questions!

-d2

0 Xiao Zhu2 over 8 years ago in reply to Don Dapkus

TI__Expert 3215 points

Hello Dapkus
If the resistor 0x03 select VINL2[SE] + VINL1[SE]， what does the output data format? Are the two channel data output serial or other foramt? if yes ，what about use the mode TDM？
Thank you.

0 Justin Bohr over 8 years ago in reply to Xiao Zhu2

TI__Mastermind 27900 points

Hi Xiao,

These selections, ones that have a + symbol in them, will be mixes of these two signals before the PGA. The output will be a the selected format in I2S output of one channel that is a mix VINL2 and VINL1, another ADC will produce the other channel for I2S. If you use this selection in TDM mode, the result will be one channel of audio that is a mix of VINL2 and VINL1 along with the 3 other channels produced by the 3 other ADCs.

Justin

Because of the Thanksgiving holiday in the U.S., TI E2E™ design support forum responses may be delayed from November 25 through December 2. Thank you for your patience.

Audio

Audio forum

PCM1864 8 channel MUX select