Invention Grant
- Patent Title: Programmable clock divider
- Patent Title (中): 可编程时钟分频器
-
Application No.: US14151790Application Date: 2014-01-09
-
Publication No.: US08829953B1Publication Date: 2014-09-09
- Inventor: Inayat Ali , Sachin Jain , Kanishka Patwal
- Applicant: Inayat Ali , Sachin Jain , Kanishka Patwal
- Applicant Address: US TX Austin
- Assignee: Freescale Semiconductor, Inc.
- Current Assignee: Freescale Semiconductor, Inc.
- Current Assignee Address: US TX Austin
- Agent Charles Bergere
- Main IPC: H03K21/00
- IPC: H03K21/00 ; H03K23/00 ; H03K25/00 ; H03K21/02

Abstract:
A programmable clock divider includes first and second comparators for generating first and second signals respectively based on a count value of a counter and a frequency ratio value. First and second flip-flops delay the first and second signals by one clock cycle of the input clock signal. An active-low latch delays the second signal by half a clock cycle of the input clock signal. A multiplexer receives the delayed first and second signals at first and second input terminals respectively and the input clock signal at a select terminal, and generates a divided clock signal. The multiplexer outputs the second delayed signal when the input clock signal is at a logic high state and outputs the first delayed signal when the input clock signal is at a logic low state.
Information query