| 摘要 |
A data-transmission control method is disclosed. The method is adapted to be used in a system including a master device, an adapter device, a controlled device, a first bus communicating the master device with the adapter device, a second bus communicating the controlled device with the adapter device, and a data buffer associated with the adapter device. A first and a second data-reading requests are asserted via the second bus by the adapter device in response to a reading transaction actuated via the first bus by the master device. The first and the second data-reading requests have therebetween a time interval that is greater than zero but less than a latency period indicating when the adapter device asserts the first data-reading request to the controlled device and then receives a required first data to have the first bus ready. The first data is stored into the data buffer via the second bus by the controlled device in response to the first data-reading request. The first data is completely stored into the data buffer before the end of the latency period, and is outputted to the master device via the first bus at a pop rate by the data buffer after the latency period is up.
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