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OMAP
TM
4 PandaBoard System
Reference Manual
Revision 0.4
September 22, 2010
DOC-21010
Page 30 of 83
GPIO
Dir
Signal Name
Description
GPIO_41 O
HDMI_LS_OE
TPD12S015 Level Shifter and internal LDO Enable
1 = Enabled, 0 = Disabled
GPIO_60 O HDMI_CT_CP_HPD
TPD12S015 DC/DC Converter and Hot-Plug Detect
Enable 1 = Enabled, 0 = Disabled
Table 4: HDMI GPIO Definitions
2.12
Display Interface
The PandaBoard provides two possible options for the usage of the OMAP4430 parallel display signals.
The first option (the as-shipped default configuration) routes them to a TFP410 DVI transmitter, whose
output feeds an onboard DVI-D connector. The second option routes them to a pair of 20-pin LCD
expansion connectors (J1 and J4). Both of these possible options are discussed in the following
paragraphs. See Figure 8 for a diagram of the PandaBoard Display Interface. The path shown in red in
Figure 8 is the as-shipped default configuration.
(J1 & J4)
(U2)
(P1)
Figure 8 – Panda Display Interface Block Diagram
2.12.1
Parallel Display DVI-D connector
As mentioned previously, the as-shipped parallel display interface configuration for the PandaBoard is
with the parallel display interface signals from OMAP driven to a TFP410 DVI transmitter, whose output
feeds an onboard DVI-D connector. See Figure 9 for a block diagram of this interface.
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