Omega Vehicle Security OME-PIO-D56 - Manual (Page 36)

3.3.1 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\
Note. Refer to Sec. 3.1 for more information about wBase.
When the PC is first powered up, the RESET\ signal is in Low-state. This will
disable all D/I/O operations. The user has to set the RESET\ signal to High-state
before any D/I/O command.
outportb(wBase,1);
/* RESET\=High Æ all D/I/O are enable now */
outportb(wBase,0); /* RESET\=Low Æ all D/I/O are disable now */
3.3.2 AUX Control Register
(Read/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
Note. Refer to Sec. 3.1 for more information about wBase.
Aux?=0Æ this Aux is used as a D/I
Aux?=1Æ this Aux is used as a D/O
When the PC is first powered up, All Aux? signals are in Low-state. All Aux? are
designed as D/I for all OME-PIO/PISO series. Please set all Aux? in D/I state.
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
Note. Refer to Sec. 3.1 for more information about wBase.
When the Aux? is used as D/O, the output state is controlled by this register.
This register is designed and reserved for feature extension, so do not control this
register now.
OME-PIO-D56/PIO-D24 User Manual (Ver.2.1, Oct/2003, PPH-005-21) ---- 34