Toshiba TX49 TMPR4937, Руководство пользователя

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Chapter 10 PCI Controller
10-46
10.4.20 P2G Status Register (P2GSTATUS) 0xD094
31 25 24 23 22 21 20 19 18 17 16
Reserved PMSC
PMEES
PMECLR
M66EN IOBFE IIBFE TOBFE TIBFE
Reserved
R/W1C R/W1C R/W1C R R R R R : Type
0x0 0x0 0x0 0x0 0x1 0x1 0x1 0x1 : Initial value
15 0
Reserved
: Type
: Initial value
Bit Mnemonic Field Name Description Read/Write
31:25 Reserved
⎯
24 PMSC PM State Change
Detected Power Management State Change (Default: 0x0)
“1” is set to this bit when the PowerState field of the Power Management
Register (PMCSR) is rewritten.
This bit is cleared to “0” when a “1” is written to it. This bit is only valid when
the PCI Controller is in the Satellite mode. R/W1C
23 PMEES PME_En Set
Detected PME_En Set (Default: 0x0)
This bit is set to “1” when the PME_En bit of the PMCSR Register is set to
“1”. When this bit is set, it indicates that the PCI Master (Host) device
enabled PME
* signal output.
1: Indicates that the PME_En bit is set.
0: Indicates that the PME_En bit is not set.
This bit is cleared to “0” when a “1” is written to it. This bit is only valid when
the PCI Controller is in the Satellite mode.
R/W1C
22 PMECLR PME Status Clear
Detected
PME_Status Clear (Default: 0x0)
This bit indicates that the PME_Status bit of the PMCSR Register was
cleared.
1: Indicates that the PME_Status bit was cleared.
0: Indicates that the PME_Status bit was not cleared.
This bit is cleared to “0” when a “1” is written to it. This bit is only valid when
the PCI Controller is in the Satellite mode. R/W1C
21 M66EN 66 MHz Drive
Status M66EN Status (Default: 0x0)
This bit indicates the current status of the M66EN signal. This bit can only
be read. Writes to this bit are invalid.
1: The M66EN signal is asserted.
0: The M66EN signal is deasserted. R
20 IOBFE Initiator Out-
Bound FIFO
Empty Initiator Out-Bound FIFO Empty (Default: 0x1)
1: Indicates that the Initiator Out-Bound FIFO is empty.
0: Indicates that the Initiator Out-Bound FIFO is not empty.
This is a diagnostic function. R
19 IIBFE Initiator In-Bound
FIFO Empty Initiator In-Bound FIFO Empty (Default: 0x1)
1: Indicates that the Initiator In-Bound FIFO is empty.
0: Indicates that the Initiator In-Bound FIFO is not empty.
This is a diagnostic function. R
18 TOBFE Target Out-Bound
FIFO Empty Target Out-Bound FIFO Empty (Default: 0x1)
1: Indicates that the Target Out-Bound FIFO is empty.
0: Indicates that the Target Out-Bound FIFO is not empty.
This is a diagnostic function. R
17 TIBFE Target In-Bound
FIFO Empty Target In-Bound FIFO Empty (Default: 0x1)
1: Indicates that the Target In-Bound FIFO is empty.
0: Indicates that the Target In-Bound FIFO is not empty.
This is a diagnostic function. R
16:0 Reserved
⎯
Figure 10.4.18 P2G Status Reigster