Measurement-computing CIO-DAS16/330 Manual do Utilizador descarregar pdf (Página 17)

Figure 4-1 may help understand these registers, and is further explained in the section covering the 8254.

Figure 4-1. Pacer Clock and Control

4.10 ANALOG INPUT RANGE REGISTER

BASE ADDRESS +11 - Compatible Mode

G0G1Uni/BipRangeXXXX

01234567

A write to this register sets the analog input range for all 8/16 analog inputs. The lower four bits set the analog input

range. The upper four bits are not used in compatible mode (Table 4-3).

10 MHz

COUNTER 0

COUNTER 2

COUNTER 1

A/D PACER

+5V

10K

+5V

10K

1 /10

CONTROL REGISTER

BASE + 10

TRIG

CTR0

GATE

OUT

10 MHz

1MHz

+5V

10K

CIO-AD16 8254 PACER CLOCK & CONTROL

CTR 2 OUT

CTR 0 OUT

TRIGGER

GATE 0

CTR 0 IN

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 33 34

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Measurement-computing CIO-DAS16/330 Manual do Utilizador Página 17