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Revision 0.6
OMAP TM 4 PandaBoard System
Reference Manual
November 29, 2010
DOC-21010
GPIO
GPIO_0
GPIO_122
Signal Name
H_GPIO_0/
TFP410_NPD
DVI_MSEN
Description
TFP410 Device Power down (note: this GPIO goes through a
voltage translator to meet the 3.3V I/O requirement of the
TFP410 on this pin)
1 = Normal Operation, 0 = Power Down
TFP410 Monitor Sense
0 = Powered on receiver sensed at the differential outputs
1 = No powered on receiver detected. (note: this output
from the TFP410 is open-drain and has a pull-up to 1.8V, so
it is connected directly to OMAP)
Table 5: DVI-D Display GPIO Definitions
2.12.2 Parallel Display Expansion Connector Interface
The second parallel display option for the PandaBoard is to plug an external display module into parallel
display expansion connectors J1 and J4. See Figure 10 on page 33 for a diagram of this configuration. To
enable this configuration, rework would have to be done to the board. The rework would consist of
removing 28 resistors (RMUX “A” shown in Figure 9 on page 31) and adding 28 different resistors
(RMUX “B” shown in Figure 10 on page 33). To do this, perform the following two steps:
1) Remove the following 28 resistors on the top side of the board as highlighted in red in Figure 11
on page 35 in the following locations: R40-R43, R45, R46, R48-R53, R64-R73, and R80-R85.
These 28 resistors comprise the “RMUXA” block shown in Figure 9.
2) Add 0201, 33 ohm resistors on the back side of the board as highlighted in red in Figure 12 on
page 36 in the following locations: R176-R203. These 28 resistors comprise the “RMUXB”
block shown in Figure 10. Note: if 33 ohm resistors are not available, then zero ohm resistors
may be used, or you may simply solder across the individual resistor pads.
NOTE: the two expansion connectors are through-hole, 1.27mm pitch connectors that are placed
identically and are pin-compatible with the display expansion connectors on the OMAP3530
Beagleboard. Display modules that were developed for the Beagleboard may be reused on the
PandaBoard.
Page 32 of 82
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相关PDF资料
UEVM4460G-02-01-00 PANDABOARD ES
UHDM7218BPA PLATE BARRIER 71.86X17.87" GRY
UHDM7218ECA PLATE END 71.86X17.87" GREY
UHDM7218EPA PLATE END 71.86X17.87" GREY
UHDM8418BPA PLATE BARRIER 83.9X17.9X0.1" GRY
UHDM8418ECA PLATE END 83.9X17.9X2.5" GREY
UHDM8418EPA PLATE END 83.87X17.87" GREY
UHDM8424BPA PLATE BARRIER 83.9X23.9X0.1" GRY
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