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Glossary AutoSite User Manual Glossa ry-5 LCA An acronym for Lo gic Cell Array. LCC An acronym for Lea dless Chip Carrier—a type of device package. A 4- sided device packa ge with pads on the underside. Typically, the LC…
Glossary
Glossary-4 AutoSite User Manual
Handshaking
The required sequence of signals for communication between two units.
The I/O bus protocol for a unit defines its handshaking requirements.
This is especially true for asynchronous I/O systems in which each signal
requires a response to complete an I/O operation.
High-speed Logic Drivers
A device test that increases the speed of the logic transitions between 0 to
1 and 1 to 0 of the test vector input states. This test is a diagnostic tool
designed to help debug and classify test vector failures. Specifically, this
test is designed to help identify vector transitions that are speed
dependent.
Host
A micro-mini, or mainframe computer used to control AutoSite in
Remote mode. You must use a software driver, such as Data I/O’s
TaskLink, to allow the computer to communicate with AutoSite.
Host Command
(download & upload)
The command that is sent from AutoSite to the host system during
uploading/downloading. See Download Host Command and Upload
Host Command.
I/O Address Offset
This value influences the beginning address where data is stored during a
file transfer operation. For uploads, the I/O Offset represents the address
to start loading a formatted data file. For downloads, the I/O Offset is
subtracted from the beginning address in the formatted data file. The
result is then added to the memory begin address to determine where the
block of data is loaded.
I/O Timeout
The amount of time that AutoSite will wait for a data transfer to begin.
I/O Translation Format
See Data Translation Format.
Illegal Bit
An illegal bit is when a device contains a programmed location and the
data file specifies that the location should be unprogrammed.
Illegal Bit Check
A test that determines whether or not a socketed device contains any
illegal bits.
Instrument Control Code
A 1-digit number that signals or controls data transfers. It also
implements a form of remote control that provides peripherals with flow
control beyond that provided by software handshaking.
JEDEC
Joint Electron Design Engineering Committee: a committee of
programmer and semiconductor manufacturers that provides common
standards for programmable issues. Examples of these standards include
acceptable test characters for PLDs and standard data transfer/
programming formats for PLDs. JEDEC Standard #3 is the industry
standard for PLD formats.
JEDEC Standard #3A
The standard PLD data translation format, as defined by JEDEC for PLD
design software to communicate with PLD programmers. It defines the
states of all fuses in the device (the fusemap) and may include test vectors
for device testing.
Glossary
AutoSite User Manual Glossary-5
LCA
An acronym for Logic Cell Array.
LCC
An acronym for Leadless Chip Carrier—a type of device package. A 4-
sided device package with pads on the underside. Typically, the LCC is
used in surface mount applications.
LED
An acronym for Light Emitting diode. AutoSite has five LEDs: four on the
front panel and one on the disk drive.
Load Data
A device operation that moves device data into AutoSite. You can load
AutoSite with data from a device, from AutoSite’s internal disk drive, or
from a serial port (for example, from the Handler port).
Logic Verification
After programming a device, you can select test vector verification, fuse
verification, or both types of verification.
Master Device
A device that contains data you wish to program into another device. For
example, you would load data from a master device and then program
that data into a blank device.
MatchBook
A new type of socketing technology that makes handling surface-mount
devices easier. MatchBook device carriers are used with AutoSite’s stand
alone kit for single device programming.
Memory Begin Address
The first address, in hex, of the first byte of data to be used in device
operations. If the data source/destination is RAM, the memory begin
address is a RAM address. If the data source/destination is disk, the
memory begin address is the offset for a disk file.
Next Device
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.
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. AutoSite 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.
Output Record Size
The number of data bytes contained in each data record during upload.
Overblow
A condition in which fuses are blown that should not have been.
Overblown Fuse
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.
PAL
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.
Glossary
Glossary-6 AutoSite User Manual
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,
then the part number of the device is 27C256.
Pin-driver
The electric circuit reading or applying voltage and current pulses to the
individual pin of a device, for programming or testing. See also Universal
Pin Driver.
PLCC
An acronym for Plastic Leaded Chip Carrier. A device package with
J-shaped leads extending from four sides downward, used for surface
mount applications.
PLD
An acronym for Programmable Logic Device. A particular type of
programmable integrated circuit. Architectures range from being very
simple to very complex. Most PLDs contain two levels of logic, an AND
array followed by an OR array.
PROM
An acronym for programmable read-only memory. A device with fixed
AND and programmable OR arrays. This is a slightly different
architecture from an FPLA or a PAL.
Program
The controlled application of electrical pulses to program specific fuses or
cells in a device.
Program Device
A device operation that copies device data into a socketed device. The
programming is done according to the programming algorithm selected
in the select device stage. The programming operation can also include a
verify operation.
Program Security Fuse
A programming parameter that enables/disables the programming of the
device’s security fuse.
Program Signature
Available on only a few devices, the Program Signature is a
user-definable field that allows the user to program data into the
program signature array. For example the Program Signature could
contain the revision level or modification date of the data in the
remainder of the device.
Programmable Integrated
Circuit
One of the four basic categories of ASICs, the other three being gate
arrays, standard cells, and full custom devices. PICs and ICs that are user
configurable. PLDFs and PGAs are examples of programmable integrated
circuits.
Programming Module
The interface between AutoSite and the device. The programming
module routes the signals from AutoSite’s pin driver head to the pins on
the device.