Document Version 1.00
Last revised on
Page 56 of 87
2020-04-10
Reference Manual for uTrust 3720F and uTrust 3721F Readers
The input buffer shall contain two or three bytes
Byte0
Byte1
Byte3
Description
Escape
code(0x95)
0x00
-
Type A
0x01
-
Type B
0x02
-
Type A + type B
0xFF
Bitmask
See the following table
Cards-Type-Bit Mask (Lo Byte)
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
Card Type
-
-
-
-
-
-
-
1
Type-A
-
-
-
-
-
-
1
-
Type-B
-
-
-
-
-
1
-
-
B-prime
-
-
-
-
1
-
-
-
B-prime-Sof
-
-
-
1
-
-
-
-
i-Class
-
-
1
-
-
-
-
-
FeliCa 212
-
1
-
-
-
-
-
-
FeliCa 424
1
-
-
-
-
-
-
-
Topaz
The Hi Byte will always be 0x00 (RFU).
The output buffer is
Output buffer
NULL
6.3.4.5.
CNTLESS_CONTROL_PPS
This Escape command disables the automatic PPS done by the firmware/device for contactless cards
(HF only).
Input:
The first byte of input buffer contains the escape code.
The second byte either sets the mode or contains a code to retrieve the setting.
Input
Output
Byte0
Byte1 - PPS control byte
Byte0
Escape
code(0x99)
0
Enable
No Output
1
Disable
No Output
FF
Get current status
0
– PPS is enabled
1
– PPS is disabled