Data I/O UniSite-xpi, User Manual

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6. Translation Formats
6-42 UniSite-xpi User Manual
The P Field The P field remaps the device pinout and is used with the V (test vector)
field. An asterisk terminates the field. The syntax of the field is as
follows:
<pin list>::=’P’<pin number>:N’*’
<pin number>::=<delimiter><number>
The following example shows a P field, V field, and the resulting
application:
P 1 2 3 4 5 6 14 15 16 17 7 8 9 10 11 12 13 18 19 20 *
V0001 111000HLHHNNNNNNNNNN*
V0002 100000HHHLNNNNNNNNNN*
The result of applying the above P and V fields is that vector 1 will apply
111000 to pins 1 through 6, and HLHH to pins 14 through 17. Pins 7
through 13 and 18 through 20 will not be tested.
JEDEC U and E
Fields
As of Version 2.5, the programmer supports the optional JEDEC U (user
data) and E (electrical data) fields. The U and E fields are described
below.
Note: Implementation of the JEDEC U and E fields is not part of the JEDEC-3C
(JESD3-C) standard.
User Data (U Field) The U field allows user data fuses that do not affect the logical or
electrical functionality of the device to be specified in JEDEC files. For
instance, the U field can be used to specify the User Data Signature fuse
available in some types of PLD devices because this fuse contains
information only (it has no logical or electrical functionality).
Note: To have the JEDEC U field processed correctly, you must select the device
before downloading the JEDEC file.
The following guidelines apply to the U field:
• The U field must be included for devices with U fuses.
• Each U-field cell must be explicitly provided if the U field is present.
• The F (default fuse state) field does not affect U fuses.
• There can only be one U field in a JEDEC file.
• The U field fuses must be listed in the order they appear in the
device.
• The U field must be listed after the L field and E field (if used), and
before the V (test vector) field (if used).
• The U field is specified using binary numbers, since the full number
of U-field cells is otherwise unknown.
• The number of cells specified in the U field is not included in the QF
(number of fuses) field.