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09/18/00 Rev 1.1
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PI7C7100
3-Port PCI Bridge
ADVANCE INFORMATION
4.8.4.2 Target Disconnect
PI7C7100 returns a target disconnect to an initiator when one of the following conditions is met:
• PI7C7100 hits an internal address boundary.
• PI7C7100 cannot accept any more write data.
• PI7C7100 has no more read data to deliver.
See Section 4.5.4 for a description of write address boundaries, and Section 4.6.3 for a description of
read address boundaries.
4.8.4.3 Target Abort
PI7C7100 returns a target abort to an initiator when one of the following conditions is met:
• PI7C7100 is returning a target abort from the intended target.
When PI7C7100 returns a target abort to the initiator, it sets the signaled target abort bit in the status register
corresponding to the initiator interface.
4.9 Concurrent Mode Operation
The Bridge can be configured to run in concurrent operation. Concurrent operation is defined as cycles going from one
device on one secondary bus to another device on the same or other secondary bus. This off-loads traffic from the primary
bus, allowing other traffic to run on the primary bus concurrently.
The Bridge is already configured to handle concurrent operation. However, the devices themselves need to be configured
to do so. Meaning, device drivers for the specific device used will have to be configured to perform the operation. Please
contact Pericom for more information.