Pseudo Apdus For Contactless Interface - ACS ACR89U-A2 Reference Manual

4.1.2.

Pseudo APDUs for Contactless Interface

4.1.2.1. Direct Transmit with ACR89U-A2 Format
To send a Pseudo APDU (Contactless Chip and Tag commands), and the Response Data will be
returned.
Direct Transmit Command Format (Length of the Contactless Chip and Tag Command + 5 Bytes)
Command
Direct
Transmit
Where:
Lc 1 Byte. Number of Bytes to Send.
- Maximum 255 bytes
Data In Contactless Chip or Tag Command.
The data to be sent to the Contactless Chip and Tag.
Direct Transmit Response Format (Contactless Chip and Tag Response + Data + 2 Bytes)
Item Command
1
2
Where:
Tg 1 Byte. A byte containing the logical number of the relevant target. This byte also
contains the More Information (MI) bit (bit 6). When the MI bit is set to 1, this indicates
that the host controller wants to send more data which is all the data contained in the
DataOUT[] array. This bit is only valid for a TPE target.
DataOut 0-262 Bytes. An array of raw data (from 0 up to 262 bytes) to be sent to the target by
the contactless chip.
MaxTg
Maximum number of targets to be initialized by the contactless chip. The chip is
capable of handling a maximum of two targets at once, so this field should not exceed
0x02h.
BrTy Baud rate and the modulation type to be used during the initialization.
-0x00h: 106 kbps type A (ISO/IEC 14443 Type A),
-0x01h: 212kbps (FeliCa polling),
-0x02h: 424kbps (FeliCa polling),
-0x03h: 106kbps type B (ISO/IEC 14443-3B),
-0x04h: 106kbps Innovision Jewel tag
InitiatorData[ ]
106kbps type A
ACR89U-A2 – Reference Manual
Version 1.00
Class INS P1
0xFFh 0x00h 0x00h
D4 40 Tg
D4 4A MaxTg BrTy
An array of data to be used during the initialization of the target(s).
Depending on the Baud Rate specified, the content of this field is different.
The field is optional and is present only when the host controller wants to
initialize a target with a known UID.
P2 Lc
Number of
0x00h
Bytes to send
Data
[DataOut[]]
[InitiatorData[]]
Data In
Contactless
Chip and
Data
TAG
Command
Meaning
Tag Exchange Data
Tag Polling
Page 59 of 80
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