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Trans lation Fo rmats AutoSite User Manual B-37 JEDEC Full Format, Code 91 The full JEDEC format consists of a start-of-text character (STX), various fields, an en d-of-text character (ETX), a nd a transmission ch ecksum…

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Translation Formats
B-36 AutoSite User Manual
The Design Specification
Field
<design spec> ::= {<field character>}’*’
The first field sent in a JEDEC transmission is the design specification.
Both the full and kernel JEDEC formats accept the design specification
field. This field is mandatory and does not have an identifier (such as an
asterisk) signaling its beginning. The design specification field consists of
general device information. It could, for example, consist of the following
information: your name, your company's name, the date, the device name
and manufacturer, design revision level, etc. This field is terminated by
an asterisk character. Examine the sample transmission shown on the
next page of this description—the first three lines of the file comprise the
design specification field. The programmer ignores the contents of this
field for downloads and places “Data I/O” in this field for upload
operations.
Note: You do not need to send any information in this field if you do not wish to;
a blank field, consisting of the terminating asterisk, is a valid design
specification field.
The Transmission
Checksum Field
<xmit checksum> ::= <hex digit>:4
The transmission checksum is the last value sent in a JEDEC
transmission. The full JEDEC format requires the transmission checksum.
The checksum is a 16-bit value, sent as a 4-digit hex number, and is the
sum of all the ASCII characters transmitted between (and including) the
STX and ETX. The parity bit is excluded in the calculation of the
transmission checksum.
Some computer systems do not allow you to control what characters are
sent, especially at the end of a line. You should set up the equipment so
that it will accept a dummy value of 0000 as a valid checksum. This zero
checksum is a way of disabling the transmission checksum while still
keeping within the JEDEC format rules.
Translation Formats
AutoSite User Manual B-37
JEDEC Full Format, Code 91
The full JEDEC format consists of a start-of-text character (STX), various
fields, an end-of-text character (ETX), and a transmission checksum. A
Translation Formats
B-38 AutoSite User Manual
sample JEDEC transmission sent in the full format is shown in
Figure B-18. Each of the fields is described on the following pages.
JEDEC Field Syntax
<field> ::= [<delimiter>]<field identifier>{<field character>}’*’
Figure B-18
An Example of JEDEC Full Format
ABEL(tm) Version 2.00b JEDEC file for:P20R8
Large Memory Version
Created on: 09-Mar-87 04:45 PM
8-bit barrel shifter
EngineerI Data I/O Corp Redmond WA 10 Jan 1986*
QP24* QF2560*
L0000
1101111111111111111111111111101110111010
1101111111111111111111111011111110111001
1101111111111111111110111111111110110110
1101111111111111101111111111111110110101
1101111111111011111111111111111101111010
1101111110111111111111111111111101111001
1001101111111111111111111111111101110110
1001111111111111111111111111111101110101
1001111111111111111111111111101101110101
1101111111111111111111111111101110111010
1101111111111111111111111011111110111001
1101111111111111111110111111111110110110
1101111111111111101111111111111110110101
1101111111111011111111111111111101111010
1101111110111111111111111111111101111001
1001101111111111111111111111111101110110
1001111111111111111111111111111101110101
1001111111111111111111111111101101110101*
V0001 C1000000000N00HLLLLLLL1N*
V0002 C1000000000N01LHLLLLLL1N*
V0003 C1000000001N00LLHLLLLL1N*
V0004 C1000000001N01LLLHLLLL1N*
V0005 C1000000010N00LLLLHLLL1N*
V0006 C1000000010N01LLLLLHLL1N*
V0007 C1000000011N00LLLLLLHL1N*
V0008 C1000000011N01LLLLLLLH1N*
V0009 C0111111100N00LHHHHHHH1N*
V0010 C0111111100N01HLHHHHHH1N*
V0011 C0111111101N00HHLHHHHH1N*
V0012 C0111111101N01HHHLHHHH1N*
V0013 C0111111110N00HHHHLHHH1N*
V0014 C0111111110N01HHHHHLHH1N*
V0015 C0111111111N00HHHHHHLH1N*
V0016 C0111111111N01HHHHHHHL1N*
V0017 C0000000100N01HLLLLLLL1N*
V0018 C1111111000N01LHHHHHHH1N*
V0019 C0000000000N00HHHHHHHH0N*
V0020 C0000000000N10ZZZZZZZZ1N*
C1B20*
B8C0
Header
(comment area -
everything
preceeding
first * is
ignored)
Number of Pins (24)
and Number of Fuses (2560)
Fuse Address (0000)
Fuse States:
0 = intact
1 = blown
Test Vectors
Fuse Map Checksum
Transmission Checksum
0090-3
Vector
Number