Programmable pre-emphasis circuit for serial ATA
First Claim
1. A transmitter comprising:
- an analog front end configured to receive a serial signal;
a control circuit configured to generate a first gain signal and a second gain signal based on a characteristic of a serial channel;
a first amplifier configured to, based on the first gain signal, amplify the serial signal to generate a first amplified signal;
a first delay device configured to delay the serial signal to generate a first delayed signal;
a second amplifier configured to, based on the second gain signal, amplify the first delayed signal to generate a second amplified signal; and
at least one summer configured to sum the first amplified signal and the second amplified signal to generate an output signal, wherein the output signal is transmitted on the serial channel.
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Accused Products
Abstract
A transmitter including an analog front end configured to receive a serial signal; a control circuit configured to generate a first gain signal and a second gain signal based on a characteristic of a serial channel; a first amplifier is configured to amplify the serial signal to generate a first amplified signal based on the first gain signal; a first delay device configured to delay the serial signal to generate a first delayed signal; a second amplifier configured to amplify the first delayed signal to generate a second amplified signal based on the second gain signal; and at least one summer is configured to sum the first amplified signal and the second amplified signal to generate an output signal. The output signal is transmitted on the serial channel.
118 Citations
20 Claims
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1. A transmitter comprising:
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an analog front end configured to receive a serial signal; a control circuit configured to generate a first gain signal and a second gain signal based on a characteristic of a serial channel; a first amplifier configured to, based on the first gain signal, amplify the serial signal to generate a first amplified signal; a first delay device configured to delay the serial signal to generate a first delayed signal; a second amplifier configured to, based on the second gain signal, amplify the first delayed signal to generate a second amplified signal; and at least one summer configured to sum the first amplified signal and the second amplified signal to generate an output signal, wherein the output signal is transmitted on the serial channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of operating a transmitter, the method comprising:
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receiving a serial signal; generating a first gain signal and a second gain signal based on a characteristic of a serial channel; based on the first gain signal, amplifying the serial signal to generate a first amplified signal; delaying the serial signal to generate a first delayed signal; based on the second gain signal, amplifying the first delayed signal to generate a second amplified signal; summing the first amplified signal and the second amplified signal to generate an output signal; and transmitting the output signal on the serial channel. - View Dependent Claims (19, 20)
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Specification