Methods and circuits are disclosed for estimating a delay needed to correct duty-cycle/and or phase errors of the received clock. These corrections or delta values may be transmitted back to the transmitter side, preferably expressed directly in terms of PI phase codes, for convenient adjustment ...
Traditional, open loop and all digital duty cycle correction scheme is shown in Fig. 4. The basic idea here is to control the slew rates of the clock signal using programmable bits. Extending the same technique, multiple legs can be added to widen the duty cycle correction range. This schem...
window to prevent distortions. There are several digital implementations for duty cycle correction. One of them has been explained in [1]. In this approach the duty correction circuit has been included in the DLL loop itself, but such an implementation might affect the working of the loop and...
he wants to use the LM25037-Q1 in open loop with FB=GND and COMP pin left open. He sized the transformer considering 50% max duty cycle. does the lm25037 good fit for customer application ? i don't see how to program max duty cycle. ...
Duty cycle correction circuit and a method for duty cycle correction in a delay locked loop usin 下载积分: 1500 内容提示: CLKCLKFIG. 1 (PRIOR ART)IVSMay 4, 2006 Sheet1 oFIG. 2 (PRIOR ART)” 144100 文档格式:PDF | 页数:14 | 浏览次数:9 | 上传日期:2023-06-09 10:47:56 | 文档星级...
uint8 i = 0; // loop index float dutycycle = 0.0; // Variable to hold duty cycle computation float pulseperd = 0.0; // Pulse period in mS uint16 perdcalc = 0; // Intermediate value to aid in period measurement float dutycalc = 0; // Intermediate value to aid in duty cycle meas...
A duty cycle correction (DCC) circuit and a delayed locked loop (DLL) circuit using the same are disclosed. The DCC circuit is operated by an enable signal which is enabled when the DLL is locked. The duty cycle correction (DCC) circuit includes a clock input unit and a duty cycle mixin...
a noise detection signal generation section configured to detect a variation of the up-down signal and generate the noise detection signal; and a duty cycle correction control unit configured to generate the duty cycle correction code in response to the noise detection signal and the up-down signa...
专利名称：Duty cycle correction circuit of delay locked loop and delay locked loop having the duty cycle correction circuit 发明人：Chan-kyung Kim 申请号：US11512155 申请日：20060830 公开号：US20060290397A1 公开日：20061228 专利内容由知识产权出版社提供 专利附图：摘要：A duty cycle correction circuit...
Duty cycle correction (DCC) methods and circuits are provided for improving the quality of clock signals and reducing or eliminating duty cycle distortion. The performance of known