PIO-D64/PIO-
D64U User’s Manual ( Ver.1.
6, Mar. 2015, PMH-007-16 ) ----- 31
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 power-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
all D/I/O are enable now */
outportb(wBase,0);
/* RESET\ = Low
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?=0
this Aux is used as a D/I
Aux?=1
this Aux is used as a D/O
When the PC is first power-on, All Aux? signal are in Low-state. All Aux?
are designed as D/I for all 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 for feature extension, so don’t control this register now.
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