PISO-813 Series Card
32-channel Single-Ended Isolated A/D Board
User Manual, Ver. 1.5, Feb. 2014, PMH-003-15, Page: 32
6.3
The I/O Address Map
The I/O address for PISO-813 series cards are automatically assigned by the main board ROM BIOS.
The I/O address can also be re-assigned by the user. It is strongly recommended that users do not
change the I/O address. The Plug&Play BIOS will effectively perform the assignment of proper I/O
addresses to each PISO-813 series card. The I/O address for the PISO-813 and PISO-813U are given
in the table below, all of which are based on the base address of each card.
for more information about wBase.
Address
Read
Write
wBase+0
RESET\ Control Register
RESET\ Control Register
wBase+0xd0
Low byte of A/D Data
-
wBase+0xd4
High byte of A/D Data
-
wBase+0xe0
-
Multiplexer channel select register
wBase+0xe4
-
PGA gain code register
wBase+0xf0
-
A/D trigger control register
wBase+0xfc
Read Card ID
-
6.3.1
RESET\ Control Register
(Read/Write): wBase+0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
RESET\
Whe the PC’s po er is first tur ed o , RE“ET
\ signal is in a Low-state.
This will disable all D/I/O
operations.
The user has to set the RESET\ signal to a High-state before any D/I/O command
applications are initiated.
For example:
outportb (wBase,1);
/* RESET\=High
all D/I/O are enable now */
outportb (wBase,0);
/* RESET\=Low
all D/I/O are disable now */
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