Data I/O UniSite-xpi, User Manual

Page: 273 / 413

6. Translation Formats
UniSite-xpi User Manual 6-35
JEDEC Format, Codes 91 and 92
Introduction
The JEDEC (Joint Electron Device Engineering Council) format is used to
transfer fuse and test vector data between the programmer and a host
computer. Code 91 is full format and includes all the data fields (such as
note and test fields) described on the following pages. Code 92 is the
Kernel, or shorter, format. The JEDEC Kernel format includes only the
minimum information needed for the programming; it does not, for
example, include information fields or test vector fields. Prior to
transferring a JEDEC file, the appropriate Logic device must be selected.
JEDEC’s legal character set consists of all the printable ASCII characters
and four control characters. The four allowable control characters are
STX, ETX, CR (RETURN), and LF (line feed). Other control characters,
such as ESC or BREAK, should not be used.
Note: This is Data I/O Corporation’s implementation of JEDEC Standard 3A.
For a copy of the strict standard, write to:
Electronic Industries Association
Engineering Department
2001 Eye Street NW
Washington, D.C. 20006
BNF Rules and
Standard Definitions
The Backus-Naur Form (BNF) is used in the description here to define the
syntax of the JEDEC format. BNF is a shorthand notation that follows
these rules:
:: = denotes “is defined as.”
Characters enclosed by single quotes are literals (required).
Angle brackets enclose identifiers.
Square brackets enclose optional items.
Braces {} enclose a repeated item. The item may appear zero or more
times.
Vertical bars indicate a choice between items.
Repeat counts are given by a :n suffix. For example, a 6-digit number
would be defined as:
<number> :: = <digit>:6