AT88SC6416CRF-EK Atmel, AT88SC6416CRF-EK Datasheet - Page 3

• Manufacturer Part Number: AT88SC6416CRF-EK
• Description: KIT EVAL RF READER & SOFTWARE
• Manufacturer: Atmel

Specifications of AT88SC6416CRF-EK

• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

4. Communications
4.1
4.2
4.3
5006DS–CRRF–04/09
Anticollision Protocol
CRC Error Detection
Type A Tolerance
All personalization and communication with this device is performed through the RF interface.
The IC includes an integrated tuning capacitor, enabling it to operate with only the addition of a
single external coil antenna.
The RF communications interface is fully compliant with the electrical signaling and RF power
specifications in ISO/IEC 14443-2:2001 for Type B only. Anticollision operation and frame for-
matting are compliant with ISO/IEC 14443-3:2001 for Type B only.
ISO/IEC 14443 nomenclature is used in this specification where applicable. The following abbre-
viations are utilized throughout this document. Additional terms are defined in the section in
which they are used.
When the PICC enters the 13.56 MHz RF field of the host reader (PCD), it performs a power on
reset (POR) function and waits silently for a valid Type B polling command. The CryptoRF PICC
processes the antitearing registers as part of the POR process.
The PCD initiates the anticollision process by issuing an REQB or WUPB command. The WUPB
command activates any card (PICC) in the field with a matching AFI code. The REQB command
performs the same function but does not affect a PICC in the Halt state. The CryptoRF com-
mand set is available only after the anticollision process has been completed.
A two-byte CRC_B is required in each frame transmitted by the PICC or PCD to permit transmis-
sion error detection. The CRC_B is calculated on all of the command and data bytes in the
frame. The SOF, EOF, start bits, stop bits, and EGT are not included in the CRC_B calculation.
The two-byte CRC_B follows the data bytes in the frame.
Figure 4-1.
The RF Interface is designed for use in multiprotocol applications. It will not latch or lock up if
exposed to Type A signals and will not respond to them. The PICC may reset in the presence of
Type A field modulation but is not damaged by exposure to Type A signals.
• PCD – Proximity Coupling Device: the reader/writer and antenna
• PICC – Proximity Integrated Circuit Card: the tag/card containing the IC and antenna
• RFU – Reserved for Future Use: any feature, memory location, or bit that is held as reserved
• $ xx – Hexadecimal Number: denotes a hex number “xx” (Most Significant Bit on left)
for future use
SOF
Location of the Two CRC_B Bytes within a Frame
K data bytes
CRC1
CRC2
EOF
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