2.4.4.1.1 Trigger Out 1
The Trigger Out 1 command sets the polarity, rising edge delay, and falling edge delay of the TRIG_OUT_1
signal. The delays are compared to when the pattern is displayed on the DMD. Before executing this command,
stop the current pattern sequence.
Table 2-111. Trigger Out 1 Command
I
2
C
USB
Read
Write
0x1A1D
0x6A
0xEA
Table 2-112. Trigger Out 1 Command Definition
BYTE
BITS
RESET
TYPE
0
0
0 = Non inverted trigger output
d0
wr
7:1
Reserved
d0
r
2:1
15:0
Trigger output Raising Edge delay in micro seconds (int16 number) Valid
Range : -20 to 20000
d0
wr
4:3
15:0
Trigger output Falling Edge delay in micro seconds (int16 number) Valid Range :
-20 to 20000
d0
wr
(1)
When non inverted output is selected, the rising edge must be less than or equal to the falling edge.
(2)
When inverted output is selected, the rising edge must be greater than or equal to the falling edge.
(3)
Minimum pulse width is 20 µs.
(4)
The minimum delay is affected when the number of active blocks is reduced. The formula to calculate the minimum delay is:
–(min_exposure – 5) µs. See
for the min_exposure for the number of active DMD blocks.
2.4.4.1.2 Trigger Out 2
The Trigger Out 2 Control command sets the polarity and rising edge delay of the TRIG_OUT_2 signal. The
delay is compared to when the pattern is displayed on the DMD. Before executing this command, stop the
current pattern sequence.
Table 2-113. Trigger Out 2 Command
I
2
C
USB
Read
Write
0x1A1E
0x6B
0xEB
Table 2-114. Trigger Out 2 Command Definition
BYTE
BITS
RESET
TYPE
0
0
0 = Non inverted trigger output
d0
wr
7:1
Reserved
d0
r
2:1
15:0
Trigger output Raising Edge delay in micro seconds (int16 number) Valid
Range : -20 to 20000
d0
wr
4:3
15:0
Trigger output Falling Edge delay in micro seconds (int16 number) Valid Range :
-20 to 20000
d0
wr
(1)
When non inverted output is selected, the rising edge must be less than the falling edge.
(2)
When inverted output is selected, the rising edge must be greater than the falling edge.
(3)
Minimum pulse width is 20 µs.
(4)
The minimum delay is affected when the number of active blocks is reduced. The formula to calculate the minimum delay is:
–(min_exposure – 5) µs. See
for the min_exposure for the number of active DMD blocks.
DLPC900 Control Commands
DLPU018G – OCTOBER 2014 – REVISED APRIL 2022
DLPC900 Programmer's Guide
65
Copyright © 2022 Texas Instruments Incorporated
Summary of Contents for DLP LightCrafter Dual DLPC900
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