MB86613S Datasheet, PDF (107/134 Pages) Fujitsu Component Limited. – IEEE1394 Open HCI Controller

Preliminary
8.1.2. Descriptor
This section describes the format of descriptor processed by AT- CPC. The descriptor(s) that AT- CPC han-
dles are OUTPUT_MORE command, OUTPUT_LAST command, OUTPUT_MORE_Immediate command,
and OUTPUT_LAST_Immediate command. For the _Immediate commands, specify the packet header in the
lower 16- byte field. Figures 8.3 through 8.6 show the descriptors’ format.
cmd
key
=0
=0
b0
reqCount
dataAddress
Fig. 8.3 OUTPUT_MORE descriptor Format
cmd
key
b0
=0
=2
reqCount
timeStamp
first quadlet
second quadlet
third quadlet
fourth quadlet
Fig. 8.4 OUTPUT_MORE_Immediate descriptor Format
cmd
=1
key
=0
p
i b3
reqCount
dataAddress
branchAddress
Z
xferStatus
timeStamp
Fig. 8.5 OUTPUT_LAST descriptor Format
106