Apparatus for live bus insertion of add-on devices

Details Apparatus for live bus insertion of add-on devices Apparatus for live bus insertion of add-on devices

1995-06-07

1996-06-25

Ray, Gopal C.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

395281, 361791, 439374, 3649294, 36492793, 364DIG2, G06F 1300, H01R 1302, H01R 13642

Patent

active

055308104

ABSTRACT:
An apparatus for allowing an add-on device to be inserted onto an active bus and configurable within one bus cycle is provided. The apparatus includes passive circuits used with a sequential multi-length pin arrangement on an I/O module. The apparatus also decouples the source of power to the I/O module from other devices on the bus which limits the disruption of power during the insertion. The I/O module limits current drawn from a backplane containing the bus which may disrupt signals during the insertion of the add-on device. And finally, the I/O module also limits bus signal disruption during insertion by precharging signal pins, increasing the resistance between the add-on I/O module pins and the backplane and adding capacitance to the bus.

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