Set The Picc Operating Parameter; Table 9: Picc Operating Parameter. (Default Value = Ffh) - ACS ACR122U Manual

6.5. Set the PICC Operating Parameter

This is used to set the PICC Operating Parameter of the reader.
Command Format (5 Bytes)
Command
Set PICC
Operating
Parameter
Response Format (1 Byte)
Response
Result
Bit Parameter
7 Auto PICC Polling
6 Auto ATS Generation
5 Polling Interval
4 FeliCa 424K
3 FeliCa 212K
2 Topaz
1 ISO 14443 Type B
ISO 14443 Type A
#To detect the Mifare
0
Tags, the Auto ATS
Generation must be
disabled first.
ACR122U – Application Programming Interface
Version 2.02
Class INS
0xFFh 0x00h
Data Out
PICC Operating Parameter
Description
To enable the PICC Polling
To issue ATS Request whenever an
ISO14443-4 Type A tag is activated
To set the time interval between
successive PICC Polling.
The Tag Types to be detected
during PICC Polling.

Table 9: PICC Operating Parameter. (Default Value = FFh)

P1 P2
New PICC Operating
0x51h
Parameter
Le
0x00h
Option
1 = Enable
0 = Disable
1 = Enable
0 = Disable
1 = 250 ms
0 = 500 ms
1 = Detect
0 = Skip
1 = Detect
0 = Skip
1 = Detect
0 = Skip
1 = Detect
0 = Skip
1 = Detect
0 = Skip
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