I2C and receiving data from slave devices

Hi,
We are developing a I2C bus driver on an xscale board running CE 5.0.
Master mode was easy to handle. The question is about Slave mode.

Suppose there are 2 devices on the bus which can initiate slave
transaction. How does the driver know which slave device caused the
interrupt? Is there anyway to know the slave address of the
interrupting device.

Or is it that the xscale has to poll the slave devices (master receive)
asking them if they have anything to send?

Which one is the better way? or if there is third one.

Thanks,
Gromit

.

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