US 7,555,670 B2
Clocking architecture using a bidirectional clock port
Ravindran Mohanavelu, Folsom, Calif. (US); Aaron K. Martin, El Dorado Hills, Calif. (US); Dawson Kesling, Davis, Calif. (US); Joe Salmon, Placerville, Calif. (US); and Mamun Ur Rashid, Folsom, Calif. (US)
Assigned to Intel Corporation, Santa Clara, Calif. (US)
Filed on Oct. 26, 2005, as Appl. No. 11/260,019.
Prior Publication US 2007/0091712 A1, Apr. 26, 2007
Int. Cl. G06F 1/04 (2006.01); G11C 8/00 (2006.01)
U.S. Cl. 713—600  [713/500; 711/167; 365/233.11; 365/233.12] 18 Claims
OG exemplary drawing
 
1. A chip comprising:
a bidirectional clock port, the bidirectional clock port statically configured to either receive or transmit a clock signal for two or more chips;
a first port to receive data;
a second port to repeat at least a portion of the received data from the first port via a data transmitter at the second port;
an input/output (I/O) port to provide an interface for configuration information; and
a switching element coupled with the I/O port, the switching element to select a clock signal for a transmit clock tree responsive, at least in part, to the configuration information.