Datasheet

PN532_C1 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2017. All rights reserved.
Product data sheet
COMPANY PUBLIC
Rev. 3.6 — 28 November 2017
115436 143 of 222
NXP Semiconductors
PN532/C1
Near Field Communication (NFC) controller
8.6.22 CIU memory map
The registers of the CIU are either map into the SFR or into the XRAM memory space.
Table 173. Contactless Interface Unit SFR memory map
ADDR Byte
size
Register name Description
D1h 1 CIU_Command Starts and stops the command execution
D2h 1 CIU_CommlEn Control bits to enable and disable the passing of interrupt
requests
D3h 1 CIU_DivlEn Control bits to enable and disable the passing of interrupt
requests
D4h 1 CIU_CommIrq Contains common Interrupt Request flags
D5h 1 CIU_DivIrq Contains diverse Interrupt Request flags
D6h 1 CIU_Error Error flags showing the error status of the last command
executed
DFh 1 CIU_Status1 Contains status flags of the CRC, Interrupt Request System and
FIFO buffer
E9h 1 CIU_Status2 Contain status flags of the Receiver, Transmitter and Data Mode
Detector
EAh 1 CIU_FIFOData in- and output of 64 bytes FIFO buffer
EBh 1 CIU_FIFOLevel Indicates the number of bytes stored in the FIFO
ECh 1 CIU_WaterLevel Defines the thresholds for FIFO under- and overflow warning
EDh 1 CIU_Control Contains miscellaneous Control bits
EEh 1 CIU_BitFraming Adjustments for bit oriented frames
EFh 1 CIU_Coll Bit position of the first bit collision detected on the RF-interface
Table 174. Contactless Interface Unit extension memory map
ADDR Byte
size
Register name Description
6301h 1 CIU_Mode Defines general modes for transmitting and receiving
6302h 1 CIU_TxMode Defines the transmission data rate and framing during
transmission
6303h 1 CIU_RxMode Defines the transmission data rate and framing during
receiving
6304h 1 CIU_TxControl Controls the logical behavior of the antenna driver pins TX1
and TX2
6305h 1 CIU_TxAuto Controls the settings of the antenna driver
6306h 1 CIU_TxSel Selects the internal sources for the antenna driver
1 CIU_RxSel Selects internal receiver settings
6308h 1 CIU_RxThreshold Selects thresholds for the bit decoder
6309h 1 CIU_Demod Defines demodulator settings
630Ah 1 CIU_FelNFC1 Defines the length of the valid range for the received frame
630Bh 1 CIU_FelNFC2 Defines the length of the valid range for the received frame
630Ch 1 CIU_MifNFC Controls the communication in ISO/IEC 14443/MIFARE and
NFC target mode at 106 kbit/s
630Dh 1 CIU_ManualRCV Allows manual fine tuning of the internal receiver