Programmable pre-emphasis circuit for serial ATA
First Claim
1. A high-speed serial ATA physical layer that transmits data over a communications medium using a serial ATA protocol, comprising:
- a serial ATA control circuit that controls operation of said serial ATA physical layer;
a serial ATA multiplexer that has a plurality of input lines for receiving input data, that has a control input that communicates with said serial ATA control circuit, and that outputs a serial ATA signal; and
a serial ATA analog front end that includes a first differential driver that communicates with said serial ATA multiplexer and that provides a first gain to said serial ATA signal and a serial ATA pre-emphasis circuit that provides pre-emphasis to said serial ATA signal to alter a transmission characteristic of said serial ATA signal.
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Accused Products
Abstract
A high-speed serial ATA physical layer transmits data over a communications medium using a serial ATA protocol. A serial ATA control circuit controls operation of the serial ATA physical layer. A serial ATA multiplexer outputs a serial ATA signal and has a plurality of input lines for receiving input data and a control input that communicates with the serial ATA control circuit. A serial ATA analog front end includes a first differential driver that communicates with the serial ATA multiplexer and provides a first gain to the serial ATA signal and a serial ATA pre-emphasis circuit that provides pre-emphasis to the serial ATA signal to alter a transmission characteristic of the serial ATA signal.
134 Citations
47 Claims
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1. A high-speed serial ATA physical layer that transmits data over a communications medium using a serial ATA protocol, comprising:
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a serial ATA control circuit that controls operation of said serial ATA physical layer; a serial ATA multiplexer that has a plurality of input lines for receiving input data, that has a control input that communicates with said serial ATA control circuit, and that outputs a serial ATA signal; and a serial ATA analog front end that includes a first differential driver that communicates with said serial ATA multiplexer and that provides a first gain to said serial ATA signal and a serial ATA pre-emphasis circuit that provides pre-emphasis to said serial ATA signal to alter a transmission characteristic of said serial ATA signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 45, 46, 47)
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16. A high-speed serial ATA physical layer that transmits data over a communications medium using a serial ATA protocol, comprising:
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serial ATA control means for controlling operation of said serial ATA physical layer; serial ATA multiplexing means for generating a serial ATA signal and having a plurality of input lines for receiving input data and a control input that communicates with said serial ATA control means; and a serial ATA analog front end that includes first differential driving means that communicates with said serial ATA multiplexing means for providing a first gain to said serial ATA signal and serial ATA pre-emphasis means for providing pre-emphasis to said serial ATA signal to alter a transmission characteristic of said serial ATA signal. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method for operating a high-speed serial ATA physical layer that transmits data over a communications medium using a serial ATA protocol, comprising:
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controlling operation of said serial ATA physical layer; generating a serial ATA signal from parallel input data; and providing a first gain to said serial ATA signal; and providing pre-emphasis to said serial ATA signal to alter a transmission characteristic of said serial ATA signal. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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Specification