Sensoray 626 Manual de usuario descargar pdf (Pagina 19)

Sensoray Model 626 Instruction Manual

17

10.3 Block Diagram

Figure 6 - Block diagram of a counter pair

Counter A

Counter B

Input logic

&

Multiplier

En

coder

Di

g

i

ta

l I

/O

In

te

rn

a

l

c

l

oc

k

Software control

Input logic

&

Multiplier

Encoder

Di

g

i

ta

l I

/O

In

te

rn

a

l

c

l

oc

k

Software control

Count

Direction

Index

Pre-Load

register A

Pre-Load

register B

PCI Bus

Count A

Overflow

Overflow A

Counter B

Counter B

Clear/Pre-load

Count

Direction

Index

Count B

Latch 1

In

p

ut A

In

p

ut B

Latch A

Clear/Pre-load

Overflow

Interrupt

Capture

Register

B

Interrupt

Capture

Register

A

Combined Counter Interrupts

From

other

counter

interrupts

From

other

counter

interrupts

Latch B

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 31 32

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