It doesn't look possible to me. Take a look at the "simplified block diagram". There is some bypass capability built into the part, but it is limited to taking the output of the PGA and passing it directly to the output. Unfortunately for you, the output of the PGA is also the input to the A/D so there's no way to pass different audio streams to the output and the A/D. One possible hack for this would be if you used the internal mixing capabilities of the device such that you mixed IN1L and IN1R and sent those to PGA_L and to the HPL/ROUT. You could also mix IN2L and IN2R and send that to PGA_R and to the A/D for conversion. In this case you end up with a mono version of each input though.
Brad > -----Original Message----- > From: Joyab Bhabharawala [mailto:[EMAIL PROTECTED] > Sent: Wednesday, March 26, 2008 12:06 AM > To: Griffis, Brad; [email protected]; 'Piyush > Thakkar' > Cc: 'Piyush Thakkar' > Subject: RE: TLV320AIC31 - Multichannel audio capture > > Hi Brad, > > I have connected one stereo input to IN1L+ & IN1R+ (Single ended > input), and the second stereo input to IN2L & IN2R. > Now what I want is to give audio input from IN1L+ & IN1R+ to HPLOUT & > HPROUT. And at the same time I want to record the input coming from IN2L/R > through audio serial bus. > > Is it possible? How can I do it if possible? > > Joyab > > -----Original Message----- > From: Griffis, Brad [mailto:[EMAIL PROTECTED] > Sent: Tuesday, March 25, 2008 5:03 PM > To: Joyab Bhabharawala; [email protected] > Cc: Piyush Thakkar > Subject: RE: TLV320AIC31 - Multichannel audio capture > > Please clarify your question. Your subject mentions "multi channel > capture" > which means multiple audio inputs. But then you ask for multiple outputs > later on. Which is it? > > Open an AIC31 data sheet and find the signal names for the inputs and the > outputs and then let us know which ones you want to use simultaneously. > > Brad > > ________________________________________ > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf > Of > Joyab Bhabharawala > Sent: Tuesday, March 25, 2008 4:19 AM > To: [email protected] > Cc: 'Piyush Thakkar' > Subject: TLV320AIC31 - Multichannel audio capture > > Hi, > > I have a board with DM6446 Soc and AIC31 as audio codec. AIC31 has support > for two stereo inputs. > Currently we enabled only one input and give it to either loopback or > record. > Can I capture audio from both of these input lines simultaneously? > That is, Can I have two different stereo outputs? > What driver level changes are required? > My current aic31 driver supports single channel capture/Loopback .i.e. > only > one channel is enabled at a time. > > Thanks in advance, > Joyab > > -- > _____________________________________________________________________ > Disclaimer: This e-mail message and all attachments transmitted with it > are > intended solely for the use of the addressee and may contain legally > privileged and confidential information. If the reader of this message is > not the intended recipient, or an employee or agent responsible for > delivering this message to the intended recipient, you are hereby notified > that any dissemination, distribution, copying, or other use of this > message > or its attachments is strictly prohibited. If you have received this > message > in error, please notify the sender immediately by replying to this message > and please delete it from your computer. Any views expressed in this > message > are those of the individual sender unless otherwise stated.Company has > taken > enough precautions to prevent the spread of viruses. However the company > accepts no liability for any damage caused by any virus transmitted by > this > email. > __________________________________________________________________________ > > > > - This message has been scanned for viruses, spam and dangerous content > and > is believed to be clean. > > -- > _____________________________________________________________________ > Disclaimer: This e-mail message and all attachments transmitted with it > are intended solely for the use of the addressee and may contain legally > privileged and confidential information. If the reader of this message > is not the intended recipient, or an employee or agent responsible for > delivering this message to the intended recipient, you are hereby > notified that any dissemination, distribution, copying, or other use of > this message or its attachments is strictly prohibited. If you have > received this message in error, please notify the sender immediately by > replying to this message and please delete it from your computer. Any > views expressed in this message are those of the individual sender > unless otherwise stated.Company has taken enough precautions to prevent > the spread of viruses. However the company accepts no liability for any > damage caused by any virus transmitted by this email. > __________________________________________________________________________ > _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
