Document Version 1.00
Last revised on
Page 12 of 87
2020-04-10
Reference Manual for uTrust 3720F and uTrust 3721F Readers
Document
reference in the
manual
Description of the referenced document
Document Issuer
PCSC3-SUP2
Interoperability Specification for ICCs and
Personal Computer Systems
Part 3. Supplemental Document for
Contactless ICCs
PC/SC Workgroup
CCID
Specification for Integrated Circuit(s) Cards Interface
Devices 1.1
USB-IF
USB
Universal Serial Bus Specification 2.0
USB-IF
2.6.
Conventions for Bits and Bytes
Bits are represented by lower case ‘b’ where followed by a numbering digit.
Bytes are represented by upper case ‘B’ where followed by a numbering digit.
Example:
163 decimal number is represented
●
in hexadecimal as 0xA3
●
in binary as (10100011)b
The least significant nibble of 0xA3 is
●
0x3 in hexadecimal
●
(0011)b in binary
The most significant nibble of =xA3 is
●
0xA in hexadecimal
●
(1010)b in binary