![ICP DAS USA PEX-D24 Скачать руководство пользователя страница 31](http://html1.mh-extra.com/html/icp-das-usa/pex-d24/pex-d24_user-manual_4476339031.webp)
PIO/PEX-D24/D56 Series User Manual (Ver.3.1, Mar. 2015, PMH-005-31)
31
3.3.1 RESET\ Control Register
(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\
When the PC is first powered-on, the RESET\ signal is in the Low-state.
This
will disable all D/I/O operations.
The user has to set the RESET\ signal to the
High-state before performing any D/I/O commands.
outportb (wBase,1);
/*RESET\=High
all D/I/O operations are enable now */
outportb (wBase,0);
/*RESET\=Low
all D/I/O operations are disable now */
3.3.2 AUX Control Register
(Write): wBase+2
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Aux7
Aux6
Aux5
Aux4
Aux3
Aux2
Aux1
Aux0
Aux?=0
this Aux is used as a D/I
Aux?=1
this Aux is used as a D/O
When the PC is first powered-on, all Aux signals are in the Low-state. All Aux
are designed as D/I operations for all PIO/PISO series cards.
3.3.3 AUX Data Register
(Read/Write): wBase+3
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Aux7
Aux6
Aux5
Aux4
Aux3
Aux2
Aux1
Aux0
When the Aux is used as D/O operations, the output state is controlled by this
register. This register is designed for use with future extensions. Therefore, do
not use this register.