Patent ID: 9184868
Filing Date: 2015-11-10
Classification: H04L

Abstract:
1. A transmission interface device capable of calibrating transmission frequency automatically, comprising: a clock generating unit, configured for generating an operating clock, and said operating clock determining the transmission frequency; a data transmission unit, configured for connecting to a host, transmits a plurality of data to said host according to said operating clock or said host transmits said plurality of data to said data transmission unit according to said operating clock; and said host or said data transmission unit generates an error handling when said host or said data transmission unit detects transmission errors in said plurality of data; and a control unit, generating an adjusting signal according to said error handling, and transmits said adjusting signal to said clock generating unit for adjusting said transmission frequency of said operating clock; wherein transmission communication between said host and said data transmission unit includes a device identification stage, a device configuration stage, and a data transmission stage; and said host has a first transmission frequency range, a second transmission frequency range, and a third transmission frequency range in said device identification stage, said device configuration stage, and said data transmission stage, respectively; wherein when said host or said data transmission unit is in said device identification stage and detects that said transmission frequency of said plurality of data is beyond said first transmission frequency range, then said host or said data transmission unit generates said error handling; when said host or said data transmission unit is in said device configuration stage and detects that said transmission frequency of said plurality of data is beyond said second transmission frequency range, then said host or said data transmission unit generates said error handling; and when said host or said data transmission unit is in said data transmission stage and detects that said transmission frequency of said plurality of data is beyond said third transmission frequency range, then said host or said data transmission unit generates said error handling.