Texas Instruments DLP LightCrafter 6500, Руководство пользователя, Страница: 15 / 60

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DLP LightCrafter 6500 Connections
15 DLPU028C – October 2014 – Revised November 2016
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DLP LightCrafter 6500 and 9000 Module Overview
– Pin 9 is Green PWM output.
– Pin 10 is Blue PWM output.
– Pin 11, 12, 13, and 14 are ground.
• J24 – Trigger output connector. Trigger outputs 1 and 2 for triggering external devices.
• J25 –Trigger output voltage level selectors. See Figure 1-6 .
– Jump across pins 1 to 2 for 3.3 V
– Jump across pins 2 to 3 for 1.8 V
• D5 – Red fault status LED. When lit indicates a fault has occurred in the controller
• D6 – Green Heartbeat LED. When toggling indicates controller is operating.
• D8 – 12-V Power LED. When lit indicates external 12-V supply is on.
• D9 – PWRGOOD LED. When lit indicates power is normal.
NOTE: The DLPC900 does not have a dedicated INIT_DONE signal output to indicate that it has
completed its power-up initialization and is ready to accept commands. The user may
configure one of the nine GPIOs available as an INIT_DONE signal output simply by adding
the GPIO configuration into a default batch file that is executed at power-up. A 10-k
Ω pull-
down resistor must be connected to the GPIO that will be used.
The following is an example of adding the configuration for GPIO_08 to a batch file, where
GPIO_08 is configured as an output and the signal is set high. When this command is added
to the top of the batch file, the GPIO output will go high in approximately 800 ms from the
time POSENSE goes high.
GPIO_CONFIG: 0x8 0x3
1.5.1 DLP LightCrafter 6500 LED Enable and PWM Outputs
The LED enables on J23 are low-current 3.3-V outputs and should not be used to drive LEDs directly. The
enables should be used as a control to enable a regulator that provides the necessary current to the
LEDs. The PWM outputs are also 3.3-V outputs and used for controlling the current to the LEDs, which
controls the brightness.
NOTE: The 12-V DC output on J23 should not be used to power the LED drive circuitry as it does
not provide the necessary current when all three LED enables are simultaneous turned on.
Doing so can cause a drop in the 12-V supply to the EVM regulator circuitry and reset the
controller.