发明名称 |
TRANSMISSION DEVICE AND METHOD FOR CONTROLLING FIFO CIRCUIT |
摘要 |
A transmission device includes: a write pointer controller that generates a write pointer by using a write clock recovered from a data signal; a read clock generator that generates a read clock; a read pointer controller that generates a read pointer by using the read clock; a memory in which the data signal is written to a bit specified by the write pointer, and the data signal is read from a bit specified by the read pointer; a detector that detects a usage rate of the memory according to a difference between the write pointer and the read pointer and; a frequency controller that generates a frequency control signal that changes a frequency of the read clock when the usage rate is out of a specified allowable range. The read clock generator controls the frequency of the read clock according to the frequency control signal. |
申请公布号 |
US2016202722(A1) |
申请公布日期 |
2016.07.14 |
申请号 |
US201514943492 |
申请日期 |
2015.11.17 |
申请人 |
Fujitsu Optical Components Limited |
发明人 |
Kuwata Naoki |
分类号 |
G06F1/08 |
主分类号 |
G06F1/08 |
代理机构 |
|
代理人 |
|
主权项 |
1. A transmission device comprising:
a write pointer controller that generates a write pointer by using a write clock recovered from a data signal; a read clock generator that generates a read clock; a read pointer controller that generates a read pointer by using the read clock; a memory in which the data signal is written to a bit specified by the write pointer, and the data signal is read from a bit specified by the read pointer; a detector that detects a usage rate of the memory according to a difference between the write pointer and the read pointer and; a frequency controller that generates a frequency control signal that changes a frequency of the read clock when the usage rate is out of a specified allowable range, wherein the read clock generator controls the frequency of the read clock according to the frequency control signal. |
地址 |
Kawasaki-shi JP |