Patent ID: 7460497
Filing Date: 2008-12-02
Classification: H04L

Abstract:
1. A communication method in a two-way synchronous packet serial communications link between a master device and slave device, the method including: sending a first message packet from master to slave, the first message packet including at its start a request block including a master receive data enable field indicating whether the master layer is ready to receive data and a master transmit data request field indicating whether the master layer ready to send data; sending a second message packet from the slave to the master, the second message packet including at its start a status block including a slave receive data enable field indicating whether the slave layer is ready to receive data and a slave transmit data request field indicating whether the slave layer ready to send data; transmitting the rest of the first message packet if the master transmit data request field indicates that the master layer is ready to send data and the slave receive data field indicates that the slave layer is ready to receive data; transmitting the rest of the second message packet if the slave transmit data request field indicates that the slave layer is ready to send data and the master receive data field indicates that the master is ready to receive data.