MB86613S Datasheet, PDF (109/134 Pages) Fujitsu Component Limited. – IEEE1394 Open HCI Controller

Preliminary
Bit size Field Name
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28
branchAddress
description
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Set the host memory address where the next descriptor to be processed is in.
This field specification is valid only when Z field contains ”1” or larger value.
4
Z
Set the number of descriptor to be processed next.
If no descriptor to be processed is outstanding, set ”0h” in this field.
If any descriptor is existing, set ”2h” to ”8h” as outstanding.
However, for the Immediate command, it requires 2 blocks of 16- byte field.
Therefore, the minimum value for the Z field is ”2h”.
16
xferStatus
This field indicates the transfer result (status) every packet transmitted,
following the ATContextControl register format.
16
timeStamp
For asynchronous response packet transmit :
Set the timeout detection time. Packet transmission stops when the
cycle timer value at which the packet transmission activates exceeds
the timeout value. The time must be specified combining the IsoCycle
Timer.cycleCount value + the lower 3- bit of cycleSeconds. This case
is valid only for timeStamp field of Immediate command.
For asynchronous request packet transmit :
This field indicates the time when the packet transmission is completed,
using the value for IsoCycleTimer.cycleCount + the lower 3- bit of
cycleSeconds. In this case, the time is valid only for timeStamp field of
OUTPUT_LAST and OUTPUT_LAST_Immediate commands.
For ping packet transmit :
This field indicates the time until the selfID packet or acknowledge is
received after transmitting the packet or the time until the subaction gap
is detected. Valid only for timeStamp field of OUTPUT_LAST and
OUTPUT_LAST_Immediate commands.
32
quadlet
Store the packet header in this field.
108