Datasheet

CLOUD 47X0 F REFERENCE MANUAL 11
2.4. Definition of various terms and acronyms
Term
Expansion
APDU
Application Protocol Data Unit
ATR
Answer to Reset, defined in ISO7816
ATS
Answer to select, defined in ISO/IEC 14443
Byte
Group of 8 bits
CCID
Chip Card Interface Device
CID
Card Identifier
DFU
Device Firmware Upgrade
DR
Divider receive: used to determine the baud rate between the reader to the card
DS
Divider send: used to determine the baud rate between the card to the reader
LED
Light emitting diode
MIFARE
The ISO14443 Type A with extensions for security (NXP)
NA
Not applicable
NAD
Node Address
Nibble
Group of 4 bits. 1 digit of the hexadecimal representation of a byte.
Example: 0xA3 is represented in binary as (10100011)b. The least significant nibble is
0x3 or (0011)b and the most significant nibble is 0xA or (1010)b
PCD
Proximity Coupling Device
PC/SC
Personal Computer/Smart Card: software interface to communicate between a PC
and a smart card
PICC
Proximity Integrated Chip Card
PID
Product ID
Proximity
Distance coverage till ~10 cm.
PUPI
Pseudo unique PICC identifier
RF
Radio Frequency
RFU
Reserved for future use
USB
Universal Serial Bus
VID
Vendor ID
(xyz)b
Binary notation of a number x, y, z 0,1
0xYY
The byte value YY is represented in hexadecimal