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NXP Semiconductors
UM191812
PN544 C2 User Manual
191812
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2010. All rights reserved.
User Manual
Rev. 1.2 — 2010-06-16
154 of 172
Address Name
Comment
Default
0x9808
AST-ANT1-ANT2
Antenna Self Test: default PBF (4
th
parameter)
0xFF
0x989D
AST-GSP2
Antenna Self Test: GSP for TX2
0x27
0x989E
AST_Current
Antenna Self Test: Current start threshold
0x3F
0x989F
AST-GSP1
Antenna Self Test: GSP for TX1
0x2D
0x9890
GPIO_Config_POUT
Gpio default configuration: POUT (Output Port Latch)
Read or write the output port value.
Each bit in the configuration register represents the GPIO pin with the
corresponding number
(default value 0x00: output pins are set to 0)
0x00
0x9891
GPIO_Config_PIN
Gpio default configuration: PIN (Input Port Value)
Each bit in the configuration register represents the GPIO pin with the
corresponding number
Read the input port value
0x00
0x9892
GPIO_Config_PINV
Gpio default configuration: PINV (Port Invert)
Port inversion register
Each bit in the configuration register represents the GPIO pin with the
corresponding number
0x00
0x9893
GPIO_Config_PDIR
Gpio default configuration: PDIR (Port Direction)
Each bit in the configuration register represents the GPIO pin with the
corresponding number
If set to 1, the corresponding GPIO is configured in output (whatever PEN
value). If set to 0 and if the corresponding PEN bit is set to 1, the
corresponding GPIO is configured in input.
0x00
0x9894
GPIO_Config_UPUD
Gpio default configuration: UPUD (Pull up enable register)
Each bit in the configuration register represents the GPIO pin with the
corresponding number
Set to 1, an internal pull up is connected to the corresponding GPIO.
0x03
0x9895
GPIO_Config_DPUD
Gpio default configuration: DPUD (Pull Down Enable Register)
Each bit in the configuration register represents the GPIO pin with the
corresponding number
Set to 1, an internal pull down is connected to the corresponding GPIO
0x00