| 摘要 |
A disc sequencer incorporating parallel state machines to support both pipelined and non-pipelined read modes is disclosed. The parallel state machines include a first state machine and a second state machine for controlling whether data are read from a disc media and transferred to a buffer via a channel interface coupled to a read/write channel. Data may be read through the read/write channel in either pipelined or non-pipelined mode. If an operational state of either state machine is active, then the transfer of data between a read/write head accessing the media and the buffer is enabled. The operational state of the first state machine is dependent on the operational state of the second state machine such that if the second state machine is active, the operational state of the first machine will go active on the following clock period.
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