Low power transmitter for generating pulse modulated signals

摘要

Described herein are an apparatus, system, and method for generating pulse modulated (PWM) signals. The apparatus (e.g., input-output transmitter) comprises: an edge detector to detect one of a rising or falling edges of a clock signal; a counter to count up or down in response to detecting one of the rising or falling edges of the clock signal, the counter to generate a select signal; and a control unit to receive a data signal for transmission to a receiver and to generate a PWM signal as output according to a value of the select signal and the data signal, wherein the receiver and the transmitter are a Mobile Industry Processor Interface (MIPI®) M-PHYSM receiver and transmitter.

主权项

1. A transmitter comprising:
an edge detector to detect one of a rising or falling edges of a clock signal; a counter to count up or down in response to detecting one of the rising or falling edges of the clock signal, the counter having an output to generate a select signal; first and second multiplexers each having a respective channel input coupled downstream from a data input signal node and each having a respective channel select input coupled to the output of the counter, the first and second multiplexers to generate respective legs of a differential pulse width modulated (PWM) signal as an output.