| | podobné slovo | definícia |
ieee 1076
(foldoc) | IEEE 1076
The IEEE standard for VHDL.
|
ieee 1394
(foldoc) | High Performance Serial Bus
1394
FireWire
IEEE 1394
I-Link
(Or "IEEE 1394") A 1995 Macintosh/{IBM
PC} serial bus interface standard offering isochronous
real-time data transfer.
1394 can transfer data between a computer and its peripherals at
100, 200, or 400 Mbps, with a planed increase to 2 Gbps.
Cable length is limited to 4.5 m but up to 16 cables can be
daisy-chained yielding a total length of 72 m.
It can daisy-chain together up to 63 peripherals in a tree-like
structure (as opposed to SCSI's linear structure). It allows
peer-to-peer communication, e.g. between a scanner and a
printer, without using system memory or the CPU. It is
designed to support plug-and-play and hot swapping.
Its six-wire cable is not only more convenient than SCSI cables
but can supply up to 60 watts of power, allowing low-consumption
devices to operate without a separate power cord.
Some expensive camcorders included this bus from 1995. It is
expected to be used to carry SCSI, with possible application to
home automation using repeaters.
Sony calls it I-Link, most people call it "FireWire".
See also Universal Serial Bus, FC-AL.
(2014-09-06)
|
ieee 488
(foldoc) | IEEE 488
GBIP
General Purpose Interface Bus
GPIB
Hewlett-Packard Interface Bus
HP-IB
(GPIB, General-Purpose Interface Bus,
HP-IB, Hewlett-Packard Interface Bus) An 8-bit parallel bus
common on test equipment.
The IEEE-488 standard was proposed by Hewlett-Packard in the
late 1970s and has undergone a couple of revisions. HP
documentation (including data sheets and manuals) calls it
HP-IB, or Hewlett-Packard Interface Bus.
It allows up to 15 intelligent devices to share a single bus,
with the slowest device participating in the control and data
transfer handshakes to drive the speed of the transaction.
The maximum data rate is about one megabit per second.
Other standards committees have adopted HP-IB (American
Standards Institute with ANSI Standard MC 1.1 and
International Electro-technical Commission with IEC
Publication 625-1).
To paraphrase from the HP 1989 Test & Measurement Catalog (the
50th Anniversary version): The HP-IB has a party-line
structure wherein all devices on the bus are connected in
parallel. The 16 signal lines within the passive
interconnecting HP-IB (IEEE-488) cable are grouped into three
clusters according to their functions (Data Bus, Data Byte
Transfer Control Bus, General Interface Management Bus).
In June 1987 the IEEE approved a new standard for programmable
instruments called IEEE Std. 488.2-1987 Codes, Formats,
Protocols, and Common Commands. It works with the IEEE
Standard Digital Interface for Programmable Instrumentation,
IEEE 488-1978 (now 488.1). HP-IB is Hewlett-Packard's
implementation of IEEE 488.1.
(1996-05-10)
|
ieee 754
(foldoc) | IEEE Floating Point Standard
754
IEC 559
IEEE 754
(IEEE 754) "IEEE Standard for Binary
Floating-Point Arithmetic (ANSI/IEEE Std 754-1985)" or IEC
559: "Binary floating-point arithmetic for microprocessor
systems". A standard, used by many CPUs and FPUs, which
defines formats for representing floating-point numbers;
representations of special values (e.g. infinity, very small
values, NaN); five exceptions, when they occur, and what
happens when they do occur; four rounding modes; and a set
of floating-point operations that will work identically on any
conforming system.
IEEE 754 specifies formats for representing floating-point
values: single-precision (32-bit) is required,
double-precision (64-bit) is optional. The standard also
mentions that some implementations may include single-extended
precision (80-bit) and double-extended precision (128-bit)
formats.
[On-line document?]
(2003-06-17)
|
ieee 802
(foldoc) | IEEE 802
The IEEE standards for {local area
networks}. The spanning tree algorithm is defined in {IEEE
802.1} (under consideration), Logical Link Control (LLC, the
upper portion of the data link layer) in IEEE 802.2,
Ethernet in IEEE 802.3, Token Bus in IEEE 802.4 and IBM
Token Ring in IEEE 802.5.
The equivalent ISO standard is IS 8802.
(1995-02-15)
|
ieee 802.1
(foldoc) | IEEE 802.1
802.1
An IEEE working group concerned with
the IEEE 802 family of networking standards,
specifically bridging and network management.
The spanning tree protocol is standardised as 802.1D.
(2010-09-26)
|
ieee 802.2
(foldoc) | IEEE 802.2
802.2
(Networks) The IEEE standard defining Logical Link Control
(LLC, the upper portion of the data link layer) for {local
area networks}.
(1995-02-14)
|
ieee 802.3
(foldoc) | IEEE 802.3
802.3
The IEEE standard defining the hardware layer
and transport layer of (a varient of) Ethernet. The
maximum segment length is 500m and the maximum total length
is 2.5km. The maximum number of hosts is 1024.
The maximum packet size is 1518 bytes. If the upper layer
protocol submits a PDU less than 64 bytes, 802.3 will pad
the LLC Info field to achieve the minimum 64 bytes.
Although it is not technically correct, the terms "packet"
and frame are used interchangeably. The ISO/IEC 8802-3
ANSI/IEEE 802.3 Standards refer to MAC sub-layer
frames consisting of the Destination Address, Source
Address, Length, LLC Info., and FCS fields. The Preamble
and SFD are (usually) considered a header to the MAC
Frame. This header plus the MAC Frame constitute a "Packet".
(1995-07-09)
|
ieee 802.3u
(foldoc) | IEEE 802.3u
The IEEE committee working on
standards for Fast Ethernet.
(1998-06-30)
|
ieee 802.3z
(foldoc) | IEEE 802.3z
The IEEE committee working on
standards for Gigabit Ethernet.
(1998-06-30)
|
ieee 802.4
(foldoc) | IEEE 802.4
The IEEE Token Bus standard.
(1996-12-12)
|
ieee 802.5
(foldoc) | IEEE 802.5
The IEEE token ring standard. The most common type of
token ring.
(1994-10-27)
|
ieee computer society
(foldoc) | IEEE Computer Society
The society of the IEEE which publishes the journal
"Computer".
(http://computer.org/).
(1995-03-10)
|
ieee floating point standard
(foldoc) | IEEE Floating Point Standard
754
IEC 559
IEEE 754
(IEEE 754) "IEEE Standard for Binary
Floating-Point Arithmetic (ANSI/IEEE Std 754-1985)" or IEC
559: "Binary floating-point arithmetic for microprocessor
systems". A standard, used by many CPUs and FPUs, which
defines formats for representing floating-point numbers;
representations of special values (e.g. infinity, very small
values, NaN); five exceptions, when they occur, and what
happens when they do occur; four rounding modes; and a set
of floating-point operations that will work identically on any
conforming system.
IEEE 754 specifies formats for representing floating-point
values: single-precision (32-bit) is required,
double-precision (64-bit) is optional. The standard also
mentions that some implementations may include single-extended
precision (80-bit) and double-extended precision (128-bit)
formats.
[On-line document?]
(2003-06-17)
|
ieee standard 1149.1
(foldoc) | Joint Test Action Group
IEEE Standard 1149.1
JTAG
(JTAG, or "IEEE Standard 1149.1") A standard specifying
how to control and monitor the pins of compliant devices on a
printed circuit board.
Each device has four JTAG control lines. There is a
common reset (TRST) and clock (TCLK). The data line
daisy chains one device's test data out (TDO) pin
to the test data in (TDI) pin on the next device.
The protocol contains commands to read and set the values of
the pins (and, optionally internal registers) of devices.
This is called "boundary scanning". The protocol makes
board testing easier as signals that are not visible at the
board connector may be read and set.
The protocol also allows the testing of equipment, connected
to the JTAG port, to identify components on the board (by
reading the device identification register) and to control and
monitor the device's outputs.
JTAG is not used during normal operation of a board.
JTAG Technologies B.V. (http://jtag.com/).
{Boundary Scan/JTAG Technical Information - Xilinx, Inc.
(http://xilinx.com/support/techsup/journals/jtag/)}.
{Java API for Boundary Scan FAQs - Xilinx Inc.
(http://xilinx.com/products/software/sx/sxfaqs.htm)}.
{JTAG Boundary-Scan Test Products - Corelis, Inc.
(http://corelis.com/products/scanovrv.html)}.
{"Logic analyzers stamping out bugs at the cutting edge", EDN
Access, 1997-04-10
(http://ednmag.com/ednmag/reg/1997/041097/08df_02.htm)}.
{IEEE 1149.1 Device Architecture - Boundary-Scan Tutorial from
ASSET InterTech, Inc.
(http://asset-intertech.com/tutorial/arch.htm)}.
{"Application-Specific Integrated Circuits", Michael John
Sebatian Smith, published Addison-Wesley - Design Automation
Cafe
(http://dacafe.com/DACafe/EDATools/EDAbooks/ASIC/Book/CH14/CH14.2.htm)}.
{Software Debug options on ASIC cores - Embedded Systems
Programming Archive (http://embedded.com/97/feat9701.htm)}.
{Designing for On-Board Programming Using the IEEE 1149.1
(JTAG) Access Port - Intel
(http://developer.intel.com/design/flcomp/applnots/292186.htm)}.
{Built-In Self-Test Using Boundary Scan by Texas Instruments -
EDTN Network
(http://edtn.com/scribe/reference/appnotes/md003e9a.htm)}.
(1999-11-15)
|
ieeecs
(vera) | IEEECS
Institute of Electrical and Electronic Engineers - Computer
Society (org., IEEE), "IEEE-CS"
|
ieeesa
(vera) | IEEESA
Institute of Electrical and Electronic Engineers Standards
Association (org., IEEE), "IEEE-SA"
|
|