St-ericsson Sa

Optis Circuit Technology, LLC

Xavier Lambrecht

Bernardus Adrianus Cornelis Van Vlimmeren

A method of transmitting data allows flow control information to be transmitted with the user data over a synchronous bus. A channel is defined, identifying the source and at least one sink, and this includes the definition of a transport profile, indicating a flow control requirement for the data. Data is then transmitted from the source over the bus in at least one data time slot () and, if indicated by the transport profile, flow control information is also transmitted from the source over the bus in at least one flow control time slot () associated with the data time slot.

Flow control mechanisms on synchronous serial TDMA bus

Clock control is handed over in a bus circuit from a first circuit () to a second circuit (). A clock conductor () is driven to a predetermined voltage level with the driver circuit of the first circuit after a last clock period following the start of execution of the handover command and to continue driving the clock conductor () to the predetermined voltage level for a first time-interval. The clock conductor () is driven to the predetermined voltage level with the driver circuit of the second circuit after a second time interval following the start of execution of the handover command until a third time interval has elapsed following the end of the second time interval. Subsequently the clock conductor () is driven under control of the clock circuit () of the second circuit (). The first time interval contains a first integer number Pof periods of a first clock signal of the first circuit and the second and third time interval contain a second and third integer number P, Pof periods of a second clock signal of the second circuit, a duration corresponding to the second integer number Pequaling at least a pulse duration of the first clock signal, a duration corresponding to the first integer number Pequaling at least a duration corresponding to the second integer number Pplus one, a duration corresponding to the second plus third integer P, Pequaling at least a duration corresponding to the first number Pplus one.

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Romsee, Belgium

Xavier Lambrecht