AS3911 datasheet(73/159 Pages) AMSCO

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ams Datasheet

Page 73

[v2-11] 2016-Jun-13

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AS3911 − Application Information

ISO14443A and NFC 106kbit/s Settings Register

Figure 51:

ISO14443A and NFC 106kbit/s Settings Register

Note(s):

1. Default setting is set at power-up and after Set Default command.

2. no_tx_par and no_rx_par are used to send and receive custom frames like MIFARE™ Classic frames.

Address 05h: ISO14443A and NFC 106kbit/s

Settings Register

Type: RW

Bit

Name

Default

Function

Comments

7no_tx_par

1: No parity bit is

generated during Tx

Data stream is taken from FIFO, transmit has to be

done using command Transmit Without CRC

6no_rx_par

1: Receive without

parity and CRC

When set to 1 received bit stream is put in the

FIFO, no parity and CRC detection is done

5nfc_f0

1: Support of NFCIP-1

Transport Frame format

Add SB (F0) and LEN bytes during Tx and skip SB

(F0) byte during Rx

4p_len3

Refer to ISO14443A

Modulation Pulse

Width

Modulation pulse width; defined in number of

13.56 MHz clock periods.

3p_len2

2p_len1

1p_len0

0antcl

1: ISO14443

anticollision frame

Has to be set to 1 when ISO14443A bit oriented

anticollision frame is sent

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