发明名称 |
Temperature compensated timing signal generator |
摘要 |
<p>The temperature compensated timing signal generator comprises a crystal oscillator (12; 112) configured to generate a reference time signal, and a divider circuit (14, 114) arranged to receive the reference time signal as input and to output a coarse time unit signal, the coarse time unit signal having an actual frequency deviating from a desired frequency as a function of temperature of said crystal oscillator. The signal generator also includes a high frequency oscillator (16; 116) configured to generate an interpolation signal having a frequency (f RC ) greater than the frequency (f XT ) of the crystal oscillator. A finite state machine (24; 124) computes a deviation compensating signal as a function of temperature, the signal comprises an integer part representative of an integer number of pulses to be inhibited or injected in the divider circuit (14; 114) and a fractional part representative of how much the output of a new time unit signal pulse should further be delayed in order to compensate for any remaining deviation.</p> |
申请公布号 |
EP2854293(A1) |
申请公布日期 |
2015.04.01 |
申请号 |
EP20130186717 |
申请日期 |
2013.09.30 |
申请人 |
MICRO CRYSTAL AG |
发明人 |
RUFFIEUX, DAVID;SCOLARI, NICOLA |
分类号 |
H03K5/135;G04F5/00;G06F1/04;H03K19/003 |
主分类号 |
H03K5/135 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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