Simplified differential signaling
First Claim
1. In the manufacture of an electronic component from an integrated circuit and a package having parasitic inductance, the integrated circuit comprising:
- a transmitter for transmitting a digital data signal, and a reference circuit for generating and transmitting a reference signal, the reference signal being at a voltage between a logic level low and a logic level high of the digital data signal, wherein the reference circuit includes a pair of resistive elements placed in series between a power source and a return for the power source, such that the reference signal is generated at the connection between the pair of resistive elements.
4 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus for transmitting and receiving digital data in a noisy environment. Digital data is transmitted with a degree of noise immunity by generating and transmitting a reference signal along with the transmitted digital data signal. The reference signal has a voltage level between a logic level low and a logic level high of the digital data signal. The reference signal can be used to identify the center point of the transmitting device logic levels. Furthermore, the reference signal allows the receiver to track and compensate for noise introduced at the transmitter of the digital data signal.
-
Citations
13 Claims
-
1. In the manufacture of an electronic component from an integrated circuit and a package having parasitic inductance, the integrated circuit comprising:
-
a transmitter for transmitting a digital data signal, and a reference circuit for generating and transmitting a reference signal, the reference signal being at a voltage between a logic level low and a logic level high of the digital data signal, wherein the reference circuit includes a pair of resistive elements placed in series between a power source and a return for the power source, such that the reference signal is generated at the connection between the pair of resistive elements. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A receiver for receiving a digital signal, comprising:
-
a switch circuit for generating a switching point signal as a function of an input reference signal, the switching point signal identifying the transition between a logic level low and a logic level high in the received digital signal, a comparator for comparing the received digital signal with the switching point signal in order to determine whether the received digital signal is a logic level low or a logic level high; and
a routing switch operably coupled between the switch circuit and the comparator,the routing switch receiving the low level switching signal and the high level switching signal as inputs from the switch circuit, and the routing switch generating a processed switching signal as an output to the comparator. - View Dependent Claims (7, 8, 9, 10, 11, 12)
-
-
13. A receiver for receiving a digital signal, comprising:
-
a switch circuit for generating a switching point signal as a function of an input reference signal, the switching point signal identifying the transition between a logic level low and a logic level high in the received digital signal, a comparator for comparing the received digital signal with the switching point signal in order to determine whether the received digital signal is a logic level low or a logic level high; and
a routing switch operably coupled between the switch circuit and the comparator, the routing switch receiving the low level switching signal and the high level switching signal as inputs from the switch circuit, and the routing switch generating a processed switching signal as an output to the comparator, wherein the routing switch outputs either the low level switching signal or the high level switching signal to the comparator as a function of the output of the comparator.
-
Specification