User's Manual

ACR1281U

 Advanced Card Systems Ltd. Page 23 of 81

7. PICC Polling for specific PICC Types

The PICC polling function can be configured to detect “ISO14443 Type A PICCs” or “ISO14443

Type B PICCs” or both.

• ISO 14443 Type A PICCs Only = { E0 00 00 20 01 01}

• ISO 14443 Type B PICCs Only = { E0 00 00 20 01 02 }

• ISO 14443 Type A and B PICCs = { E0 00 00 20 01 03} #default setting

• Read the existing status = { E0 00 00 20 00}; Response = {E1 00 00 00 01 “Status”}

Hints:

1. It is recommended to specific the PICC types in the application so as to speed up the card

detection process.

8. Auto PPS (Communication Speed Change)

Whenever a PICC is recognized, the reader will try to change the communication speed between

the PCD and PICC defined by the Maximum Connection Speed. If the card does not support the

proposed connection speed, the reader will try to connect the card with a slower speed setting.

• Set Connection Speed = {E0 00 00 24 02 “Max Tx Speed” “Max Rx Speed”}

106k bps = 00

212k bps = 01

424k bps = 02 #default setting

848k bps = 03

No Auto PPS = FF

• Read the existing status = {E0 00 00 24 00};

Response = {E1 00 00 00 04 “Max Tx Speed” “Current Tx Speed” “Max Rx Speed”

“Current Rx Speed”}

Hints:

1. Normally, the application should know the maximum connection speed of the PICCs being used.

#The environment also affects the maximum achievable speed. The reader just uses the proposed

communication speed to talk with the PICC. The PICC will become inaccessible if the PICC or

environment does not meet the requirement of the proposed communication speed.

2. The reader supports different speed between sending and receiving.

9. Antenna Field ON/OFF

This command is used for turning on/off the antenna field.

• Enable the Antenna Field = {E0 00 00 25 01 01}

• Disable the Antenna Field = {E0 00 00 25 01 00}

• Read the existing status = {E0 00 00 25 00}; Response = {E1 00 00 00 01 “Status”}

Hints:

1. Make sure the Auto PICC Polling is disabled first before turning off the antenna field.