The pinout table below provides the 8x Pinout for the AGP bus slot on
the personal computer. The pinouts listed account for version 3.0 of the
AGP specification. The table lists 132 pins [2 rows of 66 pins], but the
Key which is listed is an absence of pins [space], both the Motherboard slot connector and AGP card have 124 pins. The
table lists pinouts for a 1.5 volt connector; for Universal AGP3.0 and
AGP3.0 Mother Board connectors..
Refer to this page for [obsolete] Version 2.0 of the AGP specification;
1x, 2x, 4x pinout at 3.3v
or 1.5 volts, with different Key locations.
The AGP slot connector is 2.9 inches long. The number sign in the pinout
table indicates that the signal’s asserted state occurs when it is
at a low voltage. The absence of a # symbol indicates that the signal is
asserted at a high voltage. The standard PWB width is .062 inches.
The Accelerated Graphics Port [AGP] is a Point-to-Point
[Chip-to-Chip] bus using 1.5 Volt or 3.3V signaling [depending on the
version]. The main use of the AGP bus is as a Local Video bus in IBM
compatible Personal Computers [PCs]. The AGP bus is based on
the PCI [Peripheral Component Interface]
spec, using the PCI specification as an operational baseline. So the
pinout is similar between the PCI bus and AGP video bus. The AGP
specification adds 20 additional signals not included in the original PCI
bus standard. The AGP specification defines the Protocol, Electrical and
Mechanical aspects of the interface bus. The AGP bus is used as a local
video bus in Personal Computers
[PCs].
The Mechanical definitions include a connector and Add-in card [AGP
Board]. The Board sizes and 1.5v and 3.3v connectors are also defined
with in the spec. There are five connectors defined: AGP 3.3v, AGP 1.5v,
AGP Universal, AGP Pro Universal, AGP Pro 3.3v, and AGP Pro 1.5v.
PCI and AGP boards are not mechanically
interchangeable.
Note: On the newest Motherboards the AGP Slot is
being replaced by the PCI-Express Bus (which is not
mechanically interchangeable with the AGP slot). However many AMD boards
are still shipping with AGP slots.
| Pin # | Pin Name | Signal Function |
Back to the main Accelerated Graphics Port [AGP] Bus page.
Additional computer bus descriptions and pin out information may be found
by selecting the Buses icon below.
Electronic Design Key words: 8x, Version 3.0, Accelerated Graphics
Port Standard, Personal Computer Local Video Bus, PC, Expansion Bus, AGP
Slot, AGP Pinouts, Pin Out, Pinout, pins Connector, Signal Names, 2row,
Computer Bus, AGP Pro, AGP Universal, Interface based on the PCI bus
Standard, PC Local video bus Specification, Spec, IBM Compatible Personal
Computer Interface, Slot, IC, Physical Interface, Description, visual
display devices, Video slot.
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