Jäger ADwin-Pro, System And Hardware Description

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Pro I: Digital-I/O- and Counter Modules
Pro-CNT-16/32 Rev. A
ADwin
116
ADwin-Pro Hardware, manual version 2.9, June 2006
5.8.12 Pro-CNT-16/32 Rev. A
The counter module Pro-CNT-16/32 Rev. A has 16 counters (32 bit). All
counter values can be loaded into the register with a single ADbasic command
so that all counter values can be latched simultaneously. It is also possible to
latch the counters individually. With a rising edge of a TTL pulse the 32-bit
counter increments by one. The counter can be cleared by software command.
The count rate can be derived by the difference between two successive read-
ings of the latch. Since the register access is discrete-time, the frequency can
be calculated online.
Fig. 219 – Pro-CNT-16/32 Rev. A : Block diagram
The module Pro-CNT-16/32 Rev. A is equipped with 16 times the components
shown in the block diagram, exception: the event input and the control register.
Fig. 220 – Pro-CNT-16/32 Rev. A : Pin assignment
NOTE: Only Counter #1 is shown for clarity of the schematic.
Control registers
32 bit Counter #1...#16
32 bit Latch #1...#16
CLK
EN
CLR
ADwi
n
-P
ro
bus
CLK #n
EVENT
10k
10k
CNTR 9 CLK
CNTR 13 CLK
CNTR 10 CLK
CNTR 14 CLK
CNTR 11 CLK
CNTR 15 CLK
CNTR 12 CLK
CNTR 16 CLK
DGND
EVENT IN
RESERVED
CNTR 1 CLK
CNTR 5 CLK
CNTR 2 CLK
CNTR 6 CLK
CNTR 3 CLK
CNTR 7 CLK
CNTR 4 CLK
CNTR 8 CLK
RESERVED
DGND
+5V, <100mA (unfused)
DGND
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED