3980xpi Users Manual - Data I/O Corporation

Glossary
Next Device
Non-default Parameters
Used during serial set programming, this value specifies the next device in the
set. For example, if you are using 8-bit devices and have specified a word
width of 16 bits, it will require two devices to store each 16-bit word.
Depending on the value entered, the data programmed into the next device
will come from either even addresses or odd addresses.
The Non-default parameters screen displays a selected group of parameters on
a parameter entry screen. To display all the available parameters, press F4 to
toggle to the All Parameters screen.
Odd/Even Byte Swap
Used during device operations for 16-bit devices, this option swaps the Most
Significant Bytes (MSB) and the Least Significant Bytes (LSB) of 16-bit words.
The programmer stores RAM data and disk file data with the convention that
the LSB of a 16-bit word resides in the even byte of memory.
Online Help
Available throughout the programmer, the help screens provide you with both
general help and context-sensitive help. The Help screen is divided into four
sections: the key listing, the general help, the specific help, and the reminder
bar.
Output Record Size
The number of data bytes contained in each data record during upload.
Overblow
Overblown Fuse
PAL ®
A condition in which fuses are blown that should not have been.
A fuse that has been over-programmed such that the surrounding area may
have been damaged or such that fuse material splatter was created. Splatter
(or rattlers) can cause intermittent shorting.
An acronym for Programmable Array Logic. PALs are devices with
programmable AND and fixed OR arrays. This is a slightly different architecture
from a PROM or an FPLA. Other examples of PAL-type architectures from other
manufacturers include PEEL and GAL. A registered trademark of Advanced
Micro Devices, Inc.
Parallel Test Vector Application
Use of internal registers to hold and release a full set of test vectors (e.g., 20
for a 10-input 10-output device) at once. In contrast to serial application,
parallel does not require accommodations for clocking contention, and parallel
better matches in-circuit PLD operation and board test suites.
Part Number
The number on the device. For example if you are using an Intel 27C256, the
part number of the device is 27C256.
D-8 3980xpi/3980/3900/2900 User Manual