Module Name: src
Committed By: jruoho
Date: Mon Aug 29 15:35:29 UTC 2011
Modified Files:
src/share/man/man4: dtvi2c.4
Log Message:
Some improvements.
To generate a diff of this commit:
cvs rdiff -u -r1.2 -r1.3 src/share/man/man4/dtvi2c.4
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/share/man/man4/dtvi2c.4
diff -u src/share/man/man4/dtvi2c.4:1.2 src/share/man/man4/dtvi2c.4:1.3
--- src/share/man/man4/dtvi2c.4:1.2 Mon Aug 29 13:42:53 2011
+++ src/share/man/man4/dtvi2c.4 Mon Aug 29 15:35:29 2011
@@ -1,4 +1,4 @@
-.\" $NetBSD: dtvi2c.4,v 1.2 2011/08/29 13:42:53 wiz Exp $
+.\" $NetBSD: dtvi2c.4,v 1.3 2011/08/29 15:35:29 jruoho Exp $
.\"
.\" Copyright (c) 2011 The NetBSD Foundation, Inc.
.\" All rights reserved.
@@ -27,20 +27,25 @@
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE.
.\"
-.Dd August 14, 2011
+.Dd August 29, 2011
.Dt DTVI2C 4
.Os
.Sh NAME
.Nm dtvi2c
-.Nd iic-connected support modules for dtv
+.Nd Inter IC (I2C) modules for
+.Ic dtv
.Sh DESCRIPTION
The
.Nm
-modules are drivers for support hardware needed by DVB devices.
-This includes e.g. tuners, demodulators, and analog video decoders.
+modules provide support for
+.Xr dtv 4
+devices.
+The
+.Nm
+group includes digital tuners, demodulators, and analog video decoders.
.Pp
The usual hardware structure consists of a host controller
-(connected via
+(connected for instance via
.Xr usb 4
or
.Xr pci 4 )
@@ -52,37 +57,52 @@
For example, a typical
.Xr dtv 4
setup would look like this:
-.Bl -bullet -offset indent
-.It
-initialize transport stream (TS) port on host controller
+.Bl -enum -offset indent
.It
-configure demodulator (put it in the ATSC/QAM/DVB-T/etc. mode)
-.It
-configure tuner (set frequency etc.)
-.It
-start TS transfer (using DMA transfers or USB high speed transfers)
+Initialize transport stream
+.Pq Dv TS
+port on the host controller.
+.It
+Configure the demodulator that
+.Dq demodulates
+the information from an intermediate frequency
+.Pq Dv IF
+that is provided to it by the associated tuner.
+This step typically includes setting the desired
+quadrature amplitude modulation
+.Pq Dv QAM
+and bandwidth, among other things.
+.It
+Configure the tuner.
+Typically this step includes at least setting the frequency.
+.It
+Start TS transfer (using
+.Dv DMA
+transfers or
+.Dv USB
+high speed transfers).
.El
.Pp
The currently supported modules are:
.Bl -tag -width 10n -offset indent
-.It au8522
+.It Ic au8522
Auvitek AU8522 ATSC/QAM64/QAM256 demodulator
-.It cx24227
+.It Ic cx24227
Conexant CX24227 ATSC/QAM64/QAM256 demodulator
-.It lg3303
+.It Ic lg3303
LG LGDT3303 ATSC/QAM64/QAM256 demodulator
-.It mt2131
+.It Ic mt2131
MicroTune MT2131 ATSC demodulator
-.It nxt2k
+.It Ic nxt2k
XXX description
-.It tvpll
+.It Ic tvpll
Generic PLL-based tuners
-.It xc3028
+.It Ic xc3028
XCeive XC3028 analog and digital tuner
-.It xc5k
+.It Ic xc5k
Xceive XC5000 analog and digital tuner
-.It zl10353
-Zarlink ZL10353 (Intel CE623x) DVB demodulator
+.It Ic zl10353
+Zarlink ZL10353 (Intel CE623x) demodulator
.El
.Sh FILES
.Bl -bullet
@@ -107,7 +127,7 @@
.Sh HISTORY
The
.Nm
-device driver first appeared in
+modules first appeared in
.Nx 6.0 .
.Sh AUTHORS
.An -nosplit
@@ -120,5 +140,4 @@
.Aq jakll...@netbsd.org ,
and
.An Jukka Ruohonen
-.Aq jru...@netbsd.org .
-.Aq jakll...@netbsd.org ,
+.Aq jruoho...@iki.fi .
