User`s manual

24 Registers Format
72XX Series
User’s Manual
3.2 I/O Address Map
All the 724X registers are 8 bits. The users can access these reg-
isters 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 man-
ual for a more detailed description on the operation of different
registers.
Offset Write Read Boards
0x00 P1A P1A PCI-7224
PCI-7248
PCI-7296
cPCI-7248/49R
PCIe-7248/7296
0x01 P1B P1B
0x02 P1C P1C
0x03 P1Ctrl Not used
0x04 P2A P2A
PCI-7248
PCI-7296
cPCI-7248/49R
PCIe-7248/7296
0x05 P2B P2B
0x06 P2C P2C
0x07 P2Ctrl Not used
0x08 P3A P3A
P1AE
(1)
PCI-7296
PCIe-7296
(1)
for
cPCI-7249R
Only
0x09 P3B P3B
P1BE
(1)
0x0A P3C P3C
P1CE
(1)
0x0B P3Ctrl Not used Not used
0x0C P4A P4A
P2AE
(1)
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
PCI-7248
PCI-7296
PCIe-7248/7296
cPCI-7248/49R
0x11 Timer/Counter #1 Timer/Counter #1
0x12 Timer/Counter #2 Timer/Counter #2
0x13
Timer/Counter
Mode Control
Timer/Counter
Mode Status
0x20
ISC: Interrupt
Source Control
Not used
0x30 Clear Interrupt Not used
Table 3-1: I/O Address Map