Method and system for configuring terminators in a serial communication system
First Claim
1. A serial communications system, comprising:
- a transmitter for sending a serial data signal at an output of the transmitter;
a transmitter terminator, coupled to the output and responsive to a first external configuration signal for configuring the transmitter terminator to variably terminate a first selected property of the output;
a receiver for processing the serial data signal at an input of the receiver, the input of the receiver coupled to the output of the transmitter; and
a receiver terminator, coupled to the input of the receiver and responsive to a second external configuration signal for configuring the receiver terminator to variably terminate a second selected property of the input.
8 Assignments
0 Petitions
Accused Products
Abstract
A system and method is disclosed that efficiently provides standard termination blocks in an approved cell library that are flexible and customizable. A serial communications system includes a transmitter for sending a serial data signal at an output of the transmitter; a transmitter terminator, coupled to the output and responsive to a first configuration signal, to variably terminate a first selected property of the output; a receiver for processing the serial data signal at an input of the receiver, the input of the receiver coupled to the output of the transmitter; and a receiver terminator, coupled to the input of the receiver and responsive to a second configuration signal to variably terminate a second selected properly of the input. The method for operating a serial communications system includes the steps of: (a) providing a plurality of unidirectional serial links, each of the links between a transmitter and a receiver, an output of each transmitter coupled to an input of a corresponding receiver by a medium type with each output having a transmitter terminator and each input having a receiver terminator; (b) terminating variably a selected property of the output of each transmitter to match the medium type coupling the output to the input of the corresponding receiver by use of a transmitter termination configuration signal asserted to the transmitter; and (c) terminating variably a selected property of the input of each receiver to match the medium type coupling the input to the output of the corresponding transmitter by use of a receiver termination configuration signal asserted to the receiver.
41 Citations
19 Claims
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1. A serial communications system, comprising:
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a transmitter for sending a serial data signal at an output of the transmitter; a transmitter terminator, coupled to the output and responsive to a first external configuration signal for configuring the transmitter terminator to variably terminate a first selected property of the output; a receiver for processing the serial data signal at an input of the receiver, the input of the receiver coupled to the output of the transmitter; and a receiver terminator, coupled to the input of the receiver and responsive to a second external configuration signal for configuring the receiver terminator to variably terminate a second selected property of the input. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A serial communications system, comprising:
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a first serial link, including; a first transmitter for sending a first serial data signal at a first output of the first transmitter; a first transmitter terminator, coupled to the first output and responsive to a first external configuration signal for configuring the first transmitter terminator to variably terminate a first selected property of the first output; a first receiver for processing the first serial data signal at a first input of the first receiver, the first input coupled to the first output; and a first receiver terminator, coupled to the first input of the receiver and responsive to a second external configuration signal for configuring the first receiver terminator to variably terminate a second selected property of the first input; and a second serial link, including; a second transmitter for sending a second serial data signal at a second output of the second receiver; a second transmitter terminator, coupled to the second output and responsive to a third external configuration signal for configuring the second transmitter terminator to variably terminate a third selected property of the second output; a second receiver for processing the second serial data signal at a second input of the second receiver, the second input coupled to the second output; and a second receiver terminator, coupled to the second input of the second receiver and responsive to a fourth external configuration signal for configuring the second receiver terminator to variably terminate a fourth selected property of the second input. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for operating a serial communications system, comprising:
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(a) providing a plurality of unidirectional serial links, each of the links between a transmitter and a receiver, an output of each transmitter coupled to an input of a corresponding receiver by a medium type with each output having a transmitter terminator and each input having a receiver terminator; (b) terminating variably a selected property of the output of each transmitter to match the medium type coupling the output of each transmitter to the input of the corresponding receiver by use of an external transmitter termination configuration signal for configuring the transmitter terminator; and (c) terminating variably a selected property of the input of each receiver to match the medium type coupling the input of each receiver to the output of the corresponding transmitter by use of a receiver termination configuration signal for configuring the receiver terminator. - View Dependent Claims (19)
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Specification