MB86613S Datasheet, PDF (53/134 Pages) Fujitsu Component Limited. – IEEE1394 Open HCI Controller

Preliminary
=1
dead?
=0
=0
wake?
(1)
=1 _wake=0
START
run?
=0
(1)
=1
active=1
(2)
active=0
(3)
active=0
(2)
dead=1
error
z=0
INT
z>0
ANALYZE
LOAD
Fig. 4.2 Flag Transition for ContextControl Registers
4.1. Asynchronous Transmit
4.1.1. Program Analysis
Context program is analyzed by the following procedures:
P1 . . . . Move the packet header byte that was stored in the lower 16- byte area for the first descriptor as
specified in the descriptor’s reqCount area from the work RAM to the AT- FIFO.
Then, if the descriptor is the OUTPUT_LAST_Immediate command, go to the interrupt handling after
making sure that data transfer has completed. If the descriptor is the OUTPUT_MORE command, go
to the procedure P2.
P2 . . . . Move the block data from the host memory in which the address is set in the next descriptor’s
dataAddress to the AT- FIFO. Then, if the descriptor is the OUTPUT_LAST command, go to the
interrupt handling after making sure that data transfer has completed. If the descriptor is the
OUTPUT_MORE command, repeat the procedure P2.
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