Advantech PCL-818 Series Manual de usuario descargar pdf (Pagina 50)

PCL-818 Series User Manual 42

Appendix B Block Diagram

B.1 PCL-818HD/HG

B.2 PCL-818L

8254

Counter # 0

Counter # 1

Counter # 2

CLK 1

CLK 2

Out 1

Out 2

Address Bus

PC BUS

DMA Signals

IRQ Signals

EOC

Ext Trig

Analog

Input

12-bit A/D

Converter

Sample

& Hold

Prog. Gain

Amplifer

1 K Word

FIFO

Control/Status

Logic

Counter 0 CLK

Counter Gate

10MHz

OSC

Divider

100KHz

1MHz

10MHz

:

Register

Select

Status

Address

Decoder

Data

Buffer

CPLD

Intermal Data Bus

D/A Output

Digital

Input

Digital

Output

16-bit

Digital Out

:

16-bit

Digital In

12-bit D/A

Converter

:

MUX

16 S/E

or

8 Diff

:

.

Channel

Scan Logic

Trigger

Logic

Data

MUX

RAM

DMA

Logic

IRQ

Logic

8254

Counter # 0

Counter # 1

Counter # 2

CLK 1

CLK 2

Out 1

Out 2

Address Bus

PC BUS

Ext Trig

Analog

Inp ut

Counter 0 CLK

Counter Gate

10MHz

OSC

Divider

100KHz

1MHz

10MHz

:

Register

Select

Status

Address

Decoder

CPLD

Interm al D a ta B us

D/A Output

Digital

Input

Digital

Output

:

:

:

.

Channel

Scan Logic

Trigger

Logic

Data

MUX

DMA

Logic

IRQ

Logic

EOC

12-bit A/D Converter

with

Sam ple a n d H o ld

Prog. Gain

Am plifer

RAM

MUX

16 S/E

or

8 Diff.

16-bit

Digital Out

16-bit

Digital In

12-bit D/A

Converter

Data

Buffer

DMA Signals

IRQ Signals

1 2 ... 45 46 47 48 49 50 51 52 53 54 55 ... 73 74

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