PI7C7300 datasheet(39/109 Pages) PERICOM

39 / 109 page

PI7C7300A

3-PORT PCI-TO-PCI BRIDGE

ADVANCE INFORMATION

Page 39 OF 109

09/25/03 Revision 1.09

Target response has been received but has not progressed to the head of the return

queue.

The delayed transaction queue is full, and the transaction cannot be queued.

A transaction with the same address and command has been queued.

A locked sequence is being propagated across PI7C7300A, and the write transaction

is not a locked transaction.

The target bus is locked and the write transaction is a locked transaction.

Use more than 16 clocks to accept this transaction.

For delayed read transactions:

The transaction is being entered into the delayed transaction queue.

The read request has already been queued, but read data is not yet available.

Data has been read from target, but it is not yet at head of the read data queue or a

posted write transaction precedes it.

The delayed transaction queue is full, and the transaction cannot be queued.

A delayed read request with the same address and bus command has already been

queued.

A locked sequence is being propagated across PI7C7300A, and the read transaction

is not a locked transaction.

PI7C7300A is currently discarding previously pre-fetched read data.

The target bus is locked and the write transaction is a locked transaction.

Use more than 16 clocks to accept this transaction.

For posted write transactions:

The posted write data buffer does not have enough space for address and at least one

DWORD of write data.

A locked sequence is being propagated across PI7C7300A, and the write transaction

is not a locked transaction.

When a target retry is returned to the initiator of a delayed transaction, the initiator must

repeat the transaction with the same address and bus command as well as the data if it is

a write transaction, within the time frame specified by the master timeout value.

Otherwise, the transaction is discarded from the buffers.

4.9.4.2

TARGET DISCONNECT

PI7C7300 Datasheet(PDF) 39 Page - Pericom Semiconductor Corporation