Table of Contents
Advertisement
5.3.7
GPIO
GPIO is a general interface for input and output and controls the I/O for trigger signals and other valid
signals and pulse generators. By using this interface you can control an external light source, make a
delay function for an external trigger signal, or make a precise exposure setting together with a PWC
trigger.
5.3.7.1
Basic block diagram
The basic block diagram is as follows.
In the SP-20000-CXP2, the pixel clock is fixed at 40 MHz, even though the sesor clock is selecteable in
Link Configuration setting.
Soft Trigger
LVAL IN
FVAL IN
Exposure Active
Acquisition Trigger Wait
Acquisition Active
Frame Trigger Wait
Frame Active
User output 0
User output 1
User output 2
User output 3
GPIO 4 (TTL IN 1)
GPIO 5 (OPTO IN 1)
GPIO 7 (CXP IN)
GPIO 10 (TTL IN2)
GPIO 11 (LVDS IN)
Pixel Clock
SP-20000M-CXP2 / SP-20000C-CXP-2
Sel Bit (5,0)
Cross Pont
Switch
12 bit Counter
Fig.5
Sel Bit (7)
INV
Sel Bit (7)
INV
INV N
Gate 1
Gate 2
NAND
Sel Bit (7)
INV
Non INV
Pulse Generator 0
Pulse Generator 1
Pulse Generator 2
Pulse Generator 3
GPIO interface
- 16 -
Trigger 2 (Frame Start)
GPIO 1 (TTL OUT 1)
GPIO 8 (TL OUT 2)
GPIO 9 (TTL OUT 3)
Ｃｌｅａｒ ＩＮ
Pulse Generator
20 bit counter x 4
CLR
Ｃｌｏｃｋ ＩＮ
Advertisement
Table of Contents
