Распиновка IEEE-488 (HP-IB, GPIB) bus

• Задать вопрос
• Comment
• Редактировать
• добавить новую

The Hewlett-Packard Instrument Bus (HP-IB), implemented with name GPIB - General Purpose Instrumentation Bus by othe manufacturers, is a short-range digital communications standard developed by Hewlett-Packard (HP) for connecting electronic test and measurement devices (e.g. digital multimeters and logic analyzers) to controllers such as computers. The bus is still in use for this purpose.

IEEE-488 allows up to 15 devices to share a single bus by daisy-chaining. The maximum data rate is about one megabyte per second. The 16 signal lines within the passive interconnecting HP-IB cable are grouped into three clusters according to their functions: Data Bus, Data Byte Transfer Control Bus, and General Interface Management Bus.

Pin	Name	Description	Source
1	DIO1	Data Bit 1	Talker
2	DIO2	Data Bit 2	Talker
3	DIO3	Data Bit 3	Talker
4	DIO4	Data Bit 4	Talker
5	EOI	End Or Indentity	Talker/Controller
6	DAV	Data Valid	Controller
7	NRFD	Not Ready For Data	Listener
8	NDAC	No Data Accepted	Listener
9	IFC	Interface Clear	Controller
10	SRQ	Service Request	Talker
11	ATN	Attention	Controller
12		Shield	-
13	DIO5	Data Bit 5	Talker
14	DIO6	Data Bit 6	Talker
15	DIO7	Data Bit 7	Talker
16	DIO8	Data Bit 8	Talker
17	REN	Remote Enabled	Controller
18		Ground DAV	-
19		Ground NRFD	-
20		Ground NDAC	-
21		Ground IFC	-
22		Ground SRQ	-
23		Ground ATN	-
24		Logical Ground	-

Data Lines:

Name	Description
DIO1 to DIO8	Data Input Output

Handshake Lines:

Name	Description
DAV	Data Valid
NRFD	Not Ready For Data
NDAC	Not Data Accepted

Interface Management Lines:

Name	Description
ATN	Attention
IFC	Interface Clear
REN	Remote Enable
SRQ	Service Request
EOI	End or Identify

Some ancient computers used this bus widely: the Commodore PET/CBM range of educational/home/personal computers, whose disk drives, printers, modems, etc, were daisy-chain connected to the (host) computer, talking and listening on the designated bus lines to perform their jobs. All of Commodores post-PET/CBM 8-bit machines, from the VIC-20 to the C128, utilized a proprietary serial IEEE-488 for peripherals, with round DIN connectors instead of the heavy-duty HP-IB plugs. Several manufacturers used IEEE-488 as a peripheral interface to connect disk drives, tape drives, printers, plotters and advanced pocket calculators to their workstation products.