Document Version 1.2
Last revised on
2017-09-26
Page 55 of 92
Reference Manual for uTrust 4701F and uTrust 4711F Readers
6.3.4.1.
CNTLESS_GET_CARD_INFO
This Escape command is used to get information about the contactless card placed in the field of the
reader.
Input:
The first byte of input buffer contains the escape code.
Output:
Byte0
Byte1
Byte2
Contactless card
present (0x01)
Card to Reader
communication baud rate
(0xNN - see table below for
details)
Card Type Info
(Upper nibble indicates memory
card/T=CL/dual mode card;
Lower nibble indicates Type A/ Type B
card
See Table below for values)
Card to Reader communication baud rate BYTE is defined as follows:
b0 – 212kbps supported (direction reader to card)
b1 – 424kbps supported (direction reader to card)
b2 – 848kbps supported (direction reader to card)
b3 – always 0
b4 – 212kbps supported (direction card to reader)
b5 – 424kbps supported (direction card to reader)
b6 – 848kbps supported (direction card to reader)
b7– 1 – indicates same baud rate in both directions
0 – indicates different baud rates in both directions
Example:
If 0xNN = 0x77, the card supports all baud rates namely 106, 212, 424 and 848 kbps in both directions.
If 0xNN = 0xB3, the card supports 106, 212 and 424 kbps in both directions.
Card Type Info:
Upper Nibble Value
Description
0
Memory card
1
T=CL card
2
Dual mode card
Lower Nibble Value
0
Type A card
1
Type B card
Byte0
Escape code(0x11)
