diff options
Diffstat (limited to 'Documentation/DocBook/media/v4l/media-types.xml')
| -rw-r--r-- | Documentation/DocBook/media/v4l/media-types.xml | 33 |
1 files changed, 28 insertions, 5 deletions
diff --git a/Documentation/DocBook/media/v4l/media-types.xml b/Documentation/DocBook/media/v4l/media-types.xml index 1af384250910..8b4fa39cf611 100644 --- a/Documentation/DocBook/media/v4l/media-types.xml +++ b/Documentation/DocBook/media/v4l/media-types.xml @@ -57,10 +57,6 @@ <entry>Connector for a RGB composite signal.</entry> </row> <row> - <entry><constant>MEDIA_ENT_F_CONN_TEST</constant></entry> - <entry>Connector for a test generator.</entry> - </row> - <row> <entry><constant>MEDIA_ENT_F_CAM_SENSOR</constant></entry> <entry>Camera video sensor entity.</entry> </row> @@ -84,7 +80,34 @@ </row> <row> <entry><constant>MEDIA_ENT_F_TUNER</constant></entry> - <entry>Digital TV, analog TV, radio and/or software radio tuner.</entry> + <entry>Digital TV, analog TV, radio and/or software radio tuner, + with consists on a PLL tuning stage that converts radio + frequency (RF) signal into an Intermediate Frequency (IF). + Modern tuners have internally IF-PLL decoders for audio + and video, but older models have those stages implemented + on separate entities. + </entry> + </row> + <row> + <entry><constant>MEDIA_ENT_F_IF_VID_DECODER</constant></entry> + <entry>IF-PLL video decoder. It receives the IF from a PLL + and decodes the analog TV video signal. This is commonly + found on some very old analog tuners, like Philips MK3 + designs. They all contain a tda9887 (or some software + compatible similar chip, like tda9885). Those devices + use a different I2C address than the tuner PLL. + </entry> + </row> + <row> + <entry><constant>MEDIA_ENT_F_IF_AUD_DECODER</constant></entry> + <entry>IF-PLL sound decoder. It receives the IF from a PLL + and decodes the analog TV audio signal. This is commonly + found on some very old analog hardware, like Micronas + msp3400, Philips tda9840, tda985x, etc. Those devices + use a different I2C address than the tuner PLL and + should be controlled together with the IF-PLL video + decoder. + </entry> </row> </tbody> </tgroup> |