SPC7281 Epson Electronics America, Inc., SPC7281 Datasheet - Page 65

• Manufacturer Part Number: SPC7281
• Description: IEEE1394 Controller
• Manufacturer: Epson Electronics America, Inc.

Hardware SBP2 Status Read Register
Bit7 F/W Pause
Bit6 Error Pause
Bit5 Reserved
Bit4 Wait Payload Ready
Bit3 HwSBP2Exec
Bit2 PageTaskExec
Bit1 StreamTaskExec
Bit0 TranExec.
Address Register Name
0x31
This register indicates the execution condition of the hardware SBP2.
When the firmware writes “1” at the HwSBP2Ctl. HwSBP2Pause bit during the execution of the HwSBP2Pause:1
(Pause) HwSBP2, this bit becomes “1”. When the firmware writes “1” at the HwSBP2Ctl.HwSBP2Rsum bit
or resets it, it is cleared. Writing to this bit is ignored.
When firmware enters the pause state without writing “1” at the HwSBP2Ctl.HwSBP2Pause bit during the
execution of the HwSBP2Pause:1 (Pause) HwSBP2, this bit becomes “1”. It is cleared at the time of Reset.
Writing to this bit is ignored.
• WaitPLReady:0 (Not Ready) => Payload Domain Not Ready
• WaitPLReady:1 (Ready) => Payload Domain Ready
When the IDE interface has a problem, the payload may not be ready. At that time, perform a recovery
processing by the firmware.
• HwSBP2Exec:0 (Stop) => Indicates the HwSBP2 processing is completed.
• HwSBP2Exec:1 (Execute) => Indicates the HwSBP2 processing is in execution.
It is cleared at the time of Reset. Writing to this bit is ignored..
• PageTaskExec:0 (Stop) => Indicates a PageTask is completed.
• PageTaskExec:1 (Execute) => Indicates a PageTask is in execution.
It is cleared at the time of Reset. Writing to this bit is ignored..
• StreamTaskExec:0 (Stop) => Indicates a StreamTask is completed.
• StreamTaskExec:1 (Execute) => Indicates a StreamTask is in execution.
It is cleared at the time of Reset. Writing to this bit is ignored..
• TranExec:0 (Stop) => Indicates a Transaction is completed.
• TranExec:1 (Execute) => Indicates a Transaction is in execution.
It is cleared at the time of Reset. Writing to this bit is ignored..
HwSBP2Stat
7: FwPause
6: ErrPause
5:
4: WaitPLReady
3: HwSBP2Exec
2: PTaskExec
1: StTaskExec
0: TranExec
Bit Symbol
R/W
R
R
R
R
R
R
R
EPSON
0: Not Firmware Pause 1: FirmWre Pause
0: Not Error Pause
0:
0: Not Ready
0: Stop
0: Stop
0: Stop
0: Stop
Description
1: Error Pause
1:
1: Ready
1: Execute
1: Execute
1: Execute
1: Execute
S1R72801F00A
H.Rst S.Rst B.Rst
0x00 0x00
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