From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Subject: Re: Question: PCM short and long sync formats Date: Mon, 26 Mar 2012 11:26:50 +0100 Message-ID: <20120326102650.GC3098@opensource.wolfsonmicro.com> References: <4F69ABB0.2000706@linux.intel.com> <20120321115146.GC3226@opensource.wolfsonmicro.com> <4F7031AD.3090202@linux.intel.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============4206835774177617744==" Return-path: Received: from opensource.wolfsonmicro.com (opensource.wolfsonmicro.com [80.75.67.52]) by alsa0.perex.cz (Postfix) with ESMTP id 501F0248D4 for ; Mon, 26 Mar 2012 12:25:18 +0200 (CEST) In-Reply-To: <4F7031AD.3090202@linux.intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: Omair Mohammed Abdullah Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org --===============4206835774177617744== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="raC6veAxrt5nqIoY" Content-Disposition: inline --raC6veAxrt5nqIoY Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Mar 26, 2012 at 02:36:53PM +0530, Omair Mohammed Abdullah wrote: > On Wednesday 21 March 2012 05:21 PM, Mark Brown wrote: > >What do you mean when you say "PCM short frame sync" and "PCM long > >frame sync"? > Sorry for the late reply, I was away. > What I mean by short/long frame sync is: the frame sync lasts for 1 > bit/1 word wide. > Eg.: For short frame sync, we get a frame sync signal for 1 clock > before the first bit on the RX/TX. > It is different from I2S mode where the frame sync is inverted and > the transition starts 1 clock before the bits and lasts till bit 1. I'm sorry but I still have no idea what you're talking about. You've described PCM mode but not explained what "short frame sync" and "long frame sync" mode are. =20 --raC6veAxrt5nqIoY Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAEBAgAGBQJPcEMLAAoJEBus8iNuMP3dEfIP/3flf9OIggc2Dv2ghNMW2Cza FPuExuNAS1lN5AlFVYAS9c7iZaSXfCDhKSWtxL6uyo4Ic41Lsn2Zkzi672yxFwHk 7mk6If6T2bncAazoDSdw+n5g7yh+SMT8+HCdIqrUHz75CV7A7TmOWXBi6XEg94+Z Jkh41m1H8jAS4M0ev8mfqST4wA0Evf02+uanjmSI9y77UVtM/wQtM0RaYgOr69vu 078IDv/XbYEkvyzusR9jde4GCgC18g4seehCL54crWKPNOOUZXNVTOYr1mKjokM1 fCe4Xrypinnf3hmKVPeHhZ+k/PwN2z9FHGrt1Cg0yapifL4/enFeJASgtZuNuu7R XKLcVpZ9NvqarngiWEQkf6Fsuz9LiOY5Vru0TE2kAl50d0uZi39sy0oFZfjtdrFN EwfE1FFkhR+Jhu5yGF5ROxjTWfs4vQgtnjh6hrkK7PN0gG/zN9OTEdbVfqfwW4J0 nBeUI5Am3dOWPY8YZ6Enh03IInUSpo4BswoY4f1ebY6D6tqLuAnrEpz1BIEnoHCq qVu1XlbZi5AKVnd5GPsOu7w2SEe2yc+vEdIHDBhLLYQDjiKJREe6SxAET7VjB3DM oI9Z60397EbqxsJSBE0oCOi7qA6f4QjHKAXystr+oc+09ku2QrgB8mre/jWfluLt 1HuhXA8unerppxpk/SEP =GNqe -----END PGP SIGNATURE----- --raC6veAxrt5nqIoY-- --===============4206835774177617744== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline --===============4206835774177617744==--