Multimode, multiline data transfer system and method of operating the same
Multimode, multiline data transfer systems and methods of operating the same. In one embodiment, one system includes: (1) a bus interface for a bus, the bus interface having a start line driver, a clock line driver and a data line driver and (2) control circuitry coupled to the bus interface and configured to cause the start line driver to establish a selected one of plural data communication protocols over the bus, the clock line driver configured to serve as a further data line driver when the selected one is based on pulse-width modulation.
1. A multimode, multiline data transfer system, comprising:
a bus interface for a bus, said bus interface having a start line driver, a clock line driver and a data line driver; and
control circuitry coupled to said bus interface and configured to cause said start line driver to establish a selected one of plural data communication protocols over said bus based on a width of a signal on a line driven by said start line driver, said clock line driver configured to serve as a further data line driver when said selected one is based on pulse-width modulation.
2. The system as recited in claim 1 wherein said plural data communication protocols include a standard based on pulse-code modulation, Inter-IC sound, universal serial bus and a standard based on pulse-width modulation.
3. The system as recited in claim 1 wherein said plural data communication protocols include a flex protocol.
4. The system as recited in claim 1 wherein said control circuitry is further configured to cause said start line driver to establish said selected one by asserting a start signal of protocol-dependent duration.
5. The system as recited in claim 1 wherein said bus interface further has a response line driver configured to serve as another data line driver when said selected one is based on said pulse-width modulation.
6. The system as recited in claim 1 wherein said bus interface is selectably configured to operate as a master of said bus.
7. The system as recited in claim 1 wherein said plural data communication protocols include a user-defined protocol.
8. A method of operating a multimode, multiline data transfer system, comprising:
employing a start line driver of a bus interface to establish a selected one of plural data communication protocols over a bus based on a width of a signal on a line driven by said start line driver, said bus interface further having a clock line driver and a data line driver; and
transferring data over said bus according to said selected one, said clock line driver configured to serve as a further data line driver when said selected one is based on pulse-width modulation.
9. The method as recited in claim 8 wherein said plural data communication protocols include a standard based on pulse-code modulation, Inter-IC sound, universal serial bus and a standard based on pulse-width modulation.
10. The method as recited in claim 8 wherein said plural data communication protocols include a flex protocol.
11. The method as recited in claim 8 wherein said employing comprises asserting a start signal of protocol-dependent duration.
12. The method as recited in claim 8 wherein said bus interface further has a response line driver configured to serve as another data line driver when said selected one is based on said pulse-width modulation.
13. The method as recited in claim 8 further comprising causing said bus interface to operate as a master of said bus.
14. The method as recited in claim 8 wherein said plural data communication protocols include a user-defined protocol.
15. A multimode, multiline data transfer system, comprising:
a bus having a start line, a clock line and a data line; and
at least two functional blocks coupled to said bus, each of said at least two functional blocks including:
a bus interface having a start line driver coupled to said start line, a clock line driver coupled to said clock line and a data line driver coupled to said data line, and
control circuitry coupled to said bus interface and configured to cause said start line driver to establish a selected one of plural data communication protocols over said bus based on a width of a signal on said start line, said clock line driver configured to serve as a further data line driver when said selected one is based on pulse-width modulation.
16. The system as recited in claim 15 wherein said plural data communication protocols include a standard based on pulse-code modulation, Inter-IC sound, universal serial bus and a standard based on pulse-width modulation.
17. The system as recited in claim 15 wherein said plural data communication protocols include a flex protocol.
18. The system as recited in claim 15 wherein said control circuitry is further configured to cause said start line driver to establish said selected one by asserting a start signal of protocol-dependent duration.
19. The system as recited in claim 15 wherein said bus interface further has a response line driver configured to serve as another data line driver when said selected one is based on said pulse-width modulation.
20. The system as recited in claim 15 wherein said bus interface is selectably configured to operate as a master of said bus.
21. The system as recited in claim 15 wherein said plural data communication protocols include a user-defined protocol.
22. The system as recited in claim 15 wherein said functional blocks form a portion of a wireless communication device.