ST25R200 datasheet(46/88 Pages) STMICROELECTRONICS

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5.14.22

Protocol transmission register 3

Address: 15h

Type: RW

Domain: RD

Table 37. Protocol transmission register 3

Bit

Name

Default

Function

Comment

RFU

5.14.23

Protocol reception register 1

Address: 16h

Type: RW

Domain: RD

Table 38. Protocol reception register 1

Bit

Name

Default

Function

Comment

RFU

b_rx_sof

1: SOF PICC to PCD

According to ISO14443-3 chapter 7.10.3.3

Support of B’ (no SOF)

b_rx_eof

1: EOF PICC to PCD

According to ISO14443-3 chapter 7.10.3.3

a_rx_par

1: Receive with parity check

rx_crc

1: Receive with CRC check

rx_nbtx

0: Received bits are positioned normally

1: Received bits are positioned according

to nbtx<2:0> setting (ISO14443A)

nbtx<2:0> bits define the position of the first bit in the first

byte in consecutive reception

antcl

1: ISO14443A/ISO15693 bit oriented

anticollision frame

Shall be set to 1 when ISO14443A/ISO15693 bit-oriented

anticollision frame is expected.

When enabled:

coll_lvl is used to detect colliding bits the first parity bit is

ignored in case the split happens within the byte

ST25R200

Application information

DS13658 - Rev 2

page 46/88

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