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2 i/o address map – ADLINK PCI-7224 User Manual

Page 32

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24

Registers Format

3.2 I/O

Address

Map

All the 724X registers are 8 bits. The users can access these registers only
by 8 bits I/O instructions. The following table shows the registers map,
including descriptions and their offset addresses relative to the base address.
Please refer to chapter 4 of this manual for a more detailed description on the
operation of different registers.

Offset

Write

Read

Boards

0x00 P1A

P1A

PCI-7224

0x01 P1B

P1B

PCI-7248

0x02 P1C

P1C

PCI-7296

0x03

P1Ctrl

Not used

cPCI-7248/49R

0x04 P2A

P2A

PCI-7248

0x05 P2B

P2B

PCI-7296

0x06 P2C

P2C

cPCI-7248/49R

0x07

P2Ctrl

Not used

0x08 P3A

P3A

P1AE

(1)

PCI-7296

0x09 P3B

P3B

P1BE

(1)

0x0A P3C

P3C

P1CE

(1)

(1)

for

0x0B

P3Ctrl

Not used

Not used

cPCI-7249R

0x0C P4A

P4A

P2AE

(1)

Only

0x0D P4B

P4B

P2BE

(1)

0x0E P4C

P4C

P2CE

(1)

0x0F

P4Ctrl

Not used

Not used

0x10 Timer/Counter

#0 Timer/Counter #0

PCI-7224

0x11 Timer/Counter

#1 Timer/Counter #1

PCI-7248

0x12 Timer/Counter

#2 Timer/Counter #2

PCI-7296

0x13

Timer/Counter
Mode Control

Timer/Counter
Mode Status

cPCI-7248/49R

0x20

ISC: Interrupt
Source Control

Not used

0x30

Clear Interrupt

Not used

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