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This register is a data port for output only. It reflects the outgoing logic levels of the pins whether the
pins are defined as an output mode by CR03. This register will reflect the value of output Flip-flop while
read access. The output data will be inverted or changed output style by CR02 or CR04.
CR02 - GP Port 1: Polarity Inversion Register
Bit 7 ... 0
Pins GP17 ... GP10
This register enables polarity inversion of pins defined as input or output by CR03.
When set to a "1", the incoming/outgoing port value is inverted.
When set to a "0", the incoming/outgoing port value is the same as in data register.
CR03 - GP Port 1: Input/Output Configuration Register
Bit 7 ... 0
Pins GP17 ... GP10
This register selects Input or Output mode of pins.
When set to a "1", respective GPIO port is programmed as an input port.
When set to a "0", respective GPIO port is programmed as an output port.
CR04 - GP Port 1: Output style control Register
Bit 7 ... 0
Pins GP17 ... GP10
When set to a "1", respective GPIO port is programmed as a pulse signal.
When set to a "0", respective GPIO port is programmed as a level signal.
CR05 - GP Port 1: Input Latched Data Register
Bit 7 ... 0
Pins GP17 ... GP10
This register will latch Port 1 data while power on or RST# pin low, which is controlled by CR14h bit 0.
CR08 - GP Port 2: Input Port Data Register
Bit 6 ... 0
Pins GP26 ... GP20
Bit 7
Reserved
This register is a data port for input only. It reflects the incoming logic levels of the pins whether the
pins are defined as an input mode by CR0B. It will be inverted data by CR0A.
CR09 - GP Port 2: Output Port Data Register
Bit 6 ... 0
Pins GP26 ... GP20
Bit 7
Reserved
This register is a data port for output only. It reflects the outgoing logic levels of the pins whether the
pins are defined as an output mode by CR0B. This register will reflect the value of output Flip-flop while
read access. The output data will be inverted or changed output style by CR0A or CR0C.
Kontron User's Guide
EPIC/PM
50
17 16BGeneral Purpose I/O
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