Patent ID: 6578098
Filing Date: 2003-06-10
Classification: G06F

Abstract:
A method for synchronously driving slave responses onto an ASB (advanced system bus) bus, said method comprising the steps of:a) in response to a read transfer from a master, a slave predicting said read transfer to be intended for a device attached to said slave if said device is ready to return read data; b) in response to a write transfer from said master, said slave predicting said write transfer to be intended for said device if said device is ready to accept write data and without inserting any wait states, preparing to drive said write slave response signal during a decoding cycle of said address decoder and retracting any other requests for data transfer until said device accepts write data such that said write transfer becomes pending; and c) utilizing a device select signal to validate said steps a) and b) such that a read slave response driven by said slave does not enter said ASB bus when said device select signal does not select said slave, and such that a write slave response driven by said slave does not enter said ASB bus when said device select signal does not select said slave.