ACR128 Dual Interface Smart Card Reader
Table 11: Register 0x23 –Automatic PICC Polling (Default value = 0x97 or 0x99 or 9F)
CMD Description Description
Bit 0
Auto PICC Polling
1 = Enable; 0 =Disable
Bit 1
Turn off Antenna Field if no PICC is found
1 = Enable; 0 =Disable
Bit 2
Turn off Antenna Field if the PICC is inactive.
1 = Enable; 0 =Disable
Bit 3
Activate the PICC when detected.
1 = Enable; 0 =Disable
Bit 5 .. 4 PICC Poll Interval for PICC
<Bit 5 – Bit 4>
<0 – 0> = 250 msec
<0 – 1> = 500 msec
<1 – 0> = 1 sec
<1 – 1> = 2.5 sec
Bit 6
Test Mode
1= Enable; 0= Disable (default)
Bit 7
Enforce ISO14443A Part 4
1= Enable; 0= Disable.
To enable the Auto PICC Polling function, issue the following command:
ACR128 Escape Command
Enable Auto PICC Polling
23
01
9F
To disable the Auto PICC Polling function, issue the following command:
ACR128 Escape Command
Disable Auto PICC Polling
23
01
9E
To read the existing polling status, issue the following command:
ACR128 Escape Command
Read Existing Polling Status
23
00
Response
Response
Data
E1 00 00 00 01
Status
NOTE:
1. It is recommended to enable the option “Turn Off Antenna Field if the PICC is inactive”, so that the
“Inactive PICC” will not be exposed to the field all the time, therefore preventing the PICC from “warming
up”.
2. The longer the PICC Poll Interval is set, the more efficient energy saving is achieved. However, the
response time of PICC Polling will become longer. The Idle Current Consumption in Power Saving Mode
is about 60mA, while the Idle Current Consumption in Non-Power Saving mode is about 130mA. Idle
Current Consumption corresponds to the setting wherein the PICC is not activated.
3. The reader will activate the ISO14443A-4 mode of the ISO14443A-4 compliant PICC automatically. Type
B PICC will not be affected by this option.
4. The JCOP30 card comes with two modes: ISO14443A-3 (MIFARE 1K) and ISO14443A-4 modes. The
application has to decide which mode should be selected once the PICC is activated.
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ACR128 API
Version 1.7 May 2008
