Reference Manual


Iso14a.PerformPPS

This command sets up the communication parameters for ISO 14443-4 commands.

Iso14a.PerformPPS may be used to change the default communication parameters in order to achieve faster HF communication. This command has to be executed directly after the Iso14a.RequestATS command but it is not necessary to execute it at all.

This command covers the PPS command as specified by ISO 14443-3 (type A).

The PPS1 bit mask is only sent to the PICC if DSI or DRI differ from the current settings.

Properties

Parameters (request frame)

Name Type/Size Description
CID Integer (8 bits)

Channel ID (CID) assigned to this PICC.

Possible values:

  • 0x00: PICC will respond to ISO 14443-4 commands with CID disabled.
  • 0x01-0x0E: valid CID value.
  • 0x0F-0xFF: rfu.
- Bit mask (8 bits) -
RFU Integer (bit mask area 0xF0) Zero padding
DSI Enumeration (bit mask area 0x0C)

Divisor Send/Receive Integer (DSI/DRI)

This parameter is mapped to the Divisor Send/Receive (DS/DI) value, which determines bit rate for sending data from PICC to PCD. The possible DS/DR values (mapped to the DSI/DRI index) are listed below.


Values:
  • Kbps106 (0)
  • Kbps212 (1)
  • Kbps424 (2)
  • Kbps848 (3)
DRI Enumeration (bit mask area 0x03)

Divisor Send/Receive Integer (DSI/DRI)

This parameter is mapped to the Divisor Send/Receive (DS/DI) value, which determines bit rate for sending data from PICC to PCD. The possible DS/DR values (mapped to the DSI/DRI index) are listed below.


Values:
  • Kbps106 (0)
  • Kbps212 (1)
  • Kbps424 (2)
  • Kbps848 (3)

Returned values (response frame)

None