MB86613S Datasheet, PDF (47/134 Pages) Fujitsu Component Limited. – IEEE1394 Open HCI Controller

Preliminary
The context program can be composed of maximum 8 descriptors. However, because the descriptor to speci-
fy the packet header needs 32- byte program, please set ”2h” to ”8h” in the Z field.
When an error occurred while processing the context program, the descriptor address field indicates the start
address in the host memory where the descriptor that was processed is contained. When the context pro-
gram is normally completed, the address field indicates the host memory start address where the last pro-
cessed descriptor is contained and Z field indicates ”0”.
31
24 23
16 15
87
0
descriptorAddress[31:4]
Z
Bit
----
31:4
3:0
Field Name
rwu
-------------- ----
descriptorAddress rwu
Z
rwu
reset
--------
undefined
description
------------------------------------------
Specify the start address for the memory where the first
context program is stored. (16- byte boundary)
undefined Specify the number of descriptor that forms the context
program.
3.2.31. AR ContextControl
This register is used for controlling the AR- CPC. This register is prepared for request and response packets
individually.
31
24 23
16 15
87
0
eventcode
active
spd
dead
wake
run
Bit
----
15
12
11
10
7:5
4:0
Field Name
rscu
-------------- ----
run
rscu
wake
rsu
dead
ru
active
ru
spd
ru
eventcode
ru
reset
--------
0b
description
------------------------------------------
Specifying ”1” at this bit runs the context program
controller (AR- CPC).
undefined Specifying ”1” at this bit wakes up the context program
controller to restart the process.
0b
This bit indicates ”1” when the context program controller
cannot proceed the operation because an error occurred.
0b
This bit indicates ”1” when the context program controller
is in- process.
undefined These bits indicate the transfer rate at the packet receive.
undefined These bits contain the result of context program process.
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