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6.5. GPIO programming examples
6.5.1
GPIO in combination with Pulse Width trigger mode
Example: 10µs unit pulse width exposure control (PWC).
Address
0xA040
0xB000
0xB004
0xB008
0xB00C
0xB010
0xB014
0xB018
0xB060
0xB090
LVAL IN
DVAL IN
FVAL IN
EEN IN
OPT IN 1
OPT IN 2
Soft Trigger 0
Soft Trigger 1
Soft Trigger 2
Soft Trigger 3
25 MHz
Pixel Clock
Fig.10. Pulse Generator Timing Example 1
CM-140 GE / -RA/-UV / CB-140GE/-RA
Pixel clock is 65MHz. 650 clocks (750-100) equals 10µs.
Register
Trigger Mode
Clock Choice
Counter Dividing Value
Length Counter 0
Start point Counter 0
Repeat Count 0
End point Counter 0
Counter Clear 0
CAMERA TRIGGER Selector
Pulse Generator 0 Selector
（
（ Cross point switch)
( Cross Point Switch )
Pulse Generator 3
Pulse Generator 2
Pulse Generator 1
Pulse Generator 0
12bit
12bit
Counter
Counte
LUT
LUT
(20bit Counter)
(20bit Counter)
(20bit Counter)
(20bit Counter)
OPT IN 1
Pulse Generator 0
- 17 -
Value
2 = Pulse Width
1 = Pixel Clock (65 MHz)
0 = Pass through
1000 Clocks
100 Clocks
1
750 Clocks
4 = Rising Edge Clear
11 = pulse generator 0
4 =OPT IN 1
Trigger 0
Trigger 1
OPT OUT 1
OPT OUT 2
Time Stamp Reset
output
100
100
750
1000
1000
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