Programming Guide

CHUMP Reference Guide
80
Application Family Identifier (AFI)
Tag application families are identified by a 1-byte identifier. This
byte consist of a 4-bit application family identifier and a 4-bit
application sub-family (ASF) identifier.
The AFI identifies the type of application targeted by the reader
and allows the reader to target only those tags meeting the
required application criteria.
For more information on the AFI, refer to the ISO/IEC CD
18000-6 specification.
Data Storage Format Identifier (DSFID)
The DSFID is a 1-byte code that indicates how data is structured
in tag memory. For more information on coding the DSFID, refer
to the ISO/IEC 15962 and ISO/IEC specification.