Page 21
Signal Handling
TM-4100GE Software
4.3 GPIO Control Block
Figure 21 below shows the GPIO Control Block signals for the GE Cameras.
FIGURE 21.
GE Camera GPIO Control Block
Inputs I0 through I7 can be either external or internal inputs to the look-up table. The outputs are used
by the imager part of the GE camera.
The HD and VD signals can be passed through, bypassing the GPIO lookup table. Figure 23 on page 22
shows a screen dump of the GPIO function select page, where HD/VD bypass selection can be made.
The default value 0 (zero) is through the lookup table. Value 1 (one) is bypassing the lookup table.
The SDK and the Cam2Net Camera Interface Application both supply methods to select GPIO bypass
of the external VD and HD (I1 and I2).
It is also possible to select which signal source to lead to the GPIO inputs. This is done in the GPIO
look-up table page as shown in Figure 22.
TTLIN(EXT_TRIG)
FDV
TTLIN(EXT_VD)
LDV
CTRL2
TTLIN(EXT_HD)
CTRL1
TTLN(INT)
CAM_STROBE
CTRL0
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
Q9
Q10
Q11
Q12
Q13
Q14
Q15
I0
I1
I2
I3
I4
I5
I6
I7
pulse_out0
pulse_out1
pulse_out3
pulse_out2
Pulse_Gen0
Pulse_Gen1
Pulse_Gen2
Pulse_Gen3
pulse_trig0
pulse_trig1
pulse_trig2
pulse_trig3
EXT_VD
EXT_HD
TTLOUT(STROBE)
EVINIT
INTG_CON
TRIG
RESV
LUT
8-to-16
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