| 摘要 |
<p>PURPOSE:To synchronize an internal digital communication clock signal with an external clock signal by sending a digital signal from an A/D converter means to a digital signal processing means synchronously with a communication clock signal from a clock generating means. CONSTITUTION:A clock oscillation block 101 generating an internal communication clock signal is provided on the inside of a 1-chip digital signal processor 100. Moreover, a digital input interface block 140 is provided which receives the internal communication clock or an external communication clock and sends a digital signal from an internal A/D converter block 110 or an external digital signal to a digital signal processing block 120 synchronously with the internal communication block or the external communication clock to the processing unit 100. Thus, even when the unit 100 acts like a master and an external device acts like a slave and also when the external A/D converter 150 or an external digital signal processor acts like a master and the unit 100 acts like a slave, the digital communication clock signal is synchronized.</p> |
