MB86613S Datasheet, PDF (48/134 Pages) Fujitsu Component Limited. – IEEE1394 Open HCI Controller

Preliminary
3.2.32. AR DMA CommandPtr
This register specifies the start address of host memory where the first context program is contained and the
number of descriptor. Set this register when the ARContextControl.run bit and .active bit are cleared.
Since the device supports only buffer- fill mode which means the context program is formed with 1 descriptor,
set ”1h” at 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.
3.2.33. IT ContextControl
This register controls the IT- CPC that transmits isochronous packets. This register is prepared for individual
channel of IT- CPC (4 channels). cycleMatchEnable bit is cleared when ITContextControl.active bit is set.
The cycleMatch field is valid only when the cycleMatchEnable bit is set.
31
24 23
16 15
cycleMatch
87
0
eventcode
cycleMatchEnable
active
dead
wake
run
Bit
----
31
Field Name
rscu
-------------- ----
cycleMatchEnable rscu
30:16 cycleMatch
rsc
15
run
rscu
12
wake
rsu
11
dead
ru
reset
--------
undefined
description
------------------------------------------
”1” at this bit indicates that the context program process
activates when the cycle timer reaches the time specified
in the cycleMatch.
undefined Specify the start time for the context program process.
0b
Specifying ”1” at this bit runs the context program
controller (IT- 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
can not proceed the operation because an error occurred.
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