ISOLATED COMMUNICATIONS INTERFACE
First Claim
1. A serial communications interface, comprising:
- a differential input/output having a first node and a second node;
a plurality of input/output nodes arranged to receive serial interface signals;
a transmitter configured to drive a twisted pair cable at the differential input/output;
a receiver coupled to the differential input output, the receiver comprising a window comparator; and
a serial port controller unit coupled to the serial interface input/output nodes, the transmitter, and the receiver;
wherein;
the serial port controller unit is configured to provide serial data to the transmitter and receive serial data from the receiver;
the serial communications interface is;
configured to transmit serial data to and receive serial data from a second serial communications interface one data bit at a time, without a clock reference sent with or embedded in the serial data; and
configured to be galvanically isolated from the second serial communications interface.
3 Assignments
0 Petitions
Accused Products
Abstract
A method and interface for serial communication is provided. The interface includes a differential input/output having a first node and a second node. There are several input/output nodes arranged to receive serial interface signals. The interface includes a transmitter configured to drive a twisted pair cable at the differential input/output. There is a receiver coupled to the differential input/output that includes a window comparator. A serial port control unit provides serial data to the transmitter and receives serial data from the receiver. The serial communications interface transmits serial data to and receives serial data from a second serial communications interface independent of a reference clock and is galvanically isolated from the second serial communications interface.
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Citations
22 Claims
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1. A serial communications interface, comprising:
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a differential input/output having a first node and a second node; a plurality of input/output nodes arranged to receive serial interface signals; a transmitter configured to drive a twisted pair cable at the differential input/output; a receiver coupled to the differential input output, the receiver comprising a window comparator; and a serial port controller unit coupled to the serial interface input/output nodes, the transmitter, and the receiver; wherein; the serial port controller unit is configured to provide serial data to the transmitter and receive serial data from the receiver; the serial communications interface is; configured to transmit serial data to and receive serial data from a second serial communications interface one data bit at a time, without a clock reference sent with or embedded in the serial data; and configured to be galvanically isolated from the second serial communications interface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A serial communication method, comprising:
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receiving serial interface signals on a first set of input nodes; driving a twisted pair cable differentially at output nodes, the output nodes comprising a first node and a second node; transmitting serial data to and receiving serial data from a remote serial communications interface one data bit at a time, without a clock reference sent with or embedded in the serial data; and galvanically isolating the transmitted signals from the remote serial communications interface. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification