Four-wire signaling system
First Claim
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1. A signaling device, comprising:
- a group of four signal nodes to receive a sequence of data bits during a sequence of bit times;
four differential receivers, wherein a respective differential receiver of the four differential receivers is coupled to two respective signal nodes in the group of four signal nodes; and
a logic circuit coupled to the four differential receivers, the logic circuit to extract common mode data from signals on the group of four signal nodes using outputs from the four differential receivers such that three data bits are received on the group of four signal nodes during each bit time of the sequence of bit times.
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Abstract
A signaling device is described. The signaling device may include a group of four signal nodes, four differential receivers and a logic circuit. The group of four signal nodes may receive a sequence of data bits during a sequence of bit times. A respective differential receiver of the four differential receivers may be coupled to two respective signal nodes in the group of four signal nodes. The logic circuit may extract common-mode data from signals on the group of four signal nodes using outputs from the four differential receivers such that three data bits are received on the group of four signal nodes during each bit time of the sequence of bit times.
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24 Claims
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1. A signaling device, comprising:
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a group of four signal nodes to receive a sequence of data bits during a sequence of bit times;
four differential receivers, wherein a respective differential receiver of the four differential receivers is coupled to two respective signal nodes in the group of four signal nodes; and
a logic circuit coupled to the four differential receivers, the logic circuit to extract common mode data from signals on the group of four signal nodes using outputs from the four differential receivers such that three data bits are received on the group of four signal nodes during each bit time of the sequence of bit times. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of extracting common mode data, comprising:
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receiving signals on a group of four signal lines; and
extracting the common mode data from the signals using four differential receivers and a logic circuit such that the signals convey three respective data bits during each bit time of a sequence of bit times. - View Dependent Claims (20, 21, 22)
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23. A signaling device, comprising
a group of four signal nodes to receive a sequence of data bits during a sequence of bit times; -
four differential receivers, wherein a respective differential receiver of the four differential receivers is coupled to two respective signal nodes in the group of four signal nodes; and
means for extracting common mode data from signals on the group of four signal nodes using outputs from the four differential receivers such that three data bits are received on the group of four signal nodes during each bit time of the sequence of bit times.
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24. A computer readable medium containing data representing a circuit that includes:
a signaling receiver, comprising;
a group of four signal nodes to receive a sequence of data bits during a sequence of bit times;
four differential receivers, wherein a respective differential receiver of the four differential receivers is coupled to two respective signal nodes in the group of four signal nodes; and
a logic circuit, wherein the logic circuit extracts common mode data from signals on the group of four signal nodes using outputs from the four differential receivers such that three data bits are received on the group of four signal nodes during each bit time of the sequence of bit times.
Specification