发明名称 |
System and method for selecting a signal source to trigger a microprocessor counter/timer macro cell |
摘要 |
<p>A system and method has been provided to selectively deliver a plurality of trigger signals to a counter/timer embedded in a microprocessor. The method provides the step of selecting a signal, from either internal or external sources, to trigger the counter/timer. If an internal source is selected, the method provides the step of selecting either a synchronous or non-synchronous signal source to trigger the counter/timer. Regardless of the source chosen, the method includes the step of generating a signal output from the selected source, and the further step of delivering the trigger signal on a dedicated connection. The method of the present invention also includes the step of counting clock cycles in response to the arrival of the trigger signal to the counter/timer. An apparatus to selectively deliver a trigger signal to a counter/timer embedded in a microprocessor from a plurality of signal sources is also provided. The apparatus includes an internal on-chip signal path extending between an internal PWM and the counter/timer, whereby the PWM can serve as the source of the trigger signal. <IMAGE></p> |
申请公布号 |
EP0797154(A1) |
申请公布日期 |
1997.09.24 |
申请号 |
EP19970301379 |
申请日期 |
1997.03.03 |
申请人 |
SHARP KABUSHIKI KAISHA;SHARP MICROELECTRONICS TECHNOLOGY, INC. |
发明人 |
ROBERTS, MICHAEL;SABHA, RAED |
分类号 |
G06F1/14;G06F15/78;(IPC1-7):G06F15/78 |
主分类号 |
G06F1/14 |
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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