User Manual

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6.10 HDMI Interface
The element14 BeagleBone Black has an onboard HDMI framer that converts the LCD
signals and audio signals to drive a HDMI monitor. The design uses an NXP TDA19988
HDMI Framer.
The following sections provide more detail into the design of this interface.
6.10.1 Supported Resolutions
The maximum resolution supported by the element14 BeagleBone Black is 1280x1024 @
60Hz. Table 8 below shows the supported resolutions. Not all resolutions may work on all
monitors, but these have been tested and shown to work on at least one monitor. EDID is
supported on the element14 BeagleBone Black. Based on the EDID reading from the
connected monitor, the highest compatible resolution is selected.
Table 8
HDMI Supported Monitor Resolutions
RES
O
L
U
T
I
O
N
A
U
D
I
O
800 x
600 @60Hz
800 x
600 @56Hz
640 x 480 @75Hz
640 x 480 @60Hz YES
720 x 400 @70Hz
1280 x
1024
@75Hz
1024 x
768 @75Hz
1024 x
768 @70Hz
1024 x 768 @60Hz
800 x 600 @75Hz
800 x 600 @72Hz
720 x 480 @60Hz YES
1280 x
720 @6
0
Hz
YES
1920
x
1080@24Hz
YES
NOTE: The updated software image used on the Rev A5B board added support for
1920x1080@24HZ.
Audio is limited to CEA supported resolutions. LCD panels only activate the audio in
CEA modes. This is a function of the specification and is not something that can be fixed
on the board via a hardware change or a software change.