NEC Network Controller uPD98502 - Manual (Page 200)

CHAPTER 3 SYSTEM CONTROLLER
200 Preliminary User’s Manual S15543EJ1V0UM
3.2.13 S_PWSR (Power Status Register)
The power status register “S_PWSR” is a read-only and 32-bit word-aligned register. The IDLE field in S_PWSR
indicates the status that it is ready to suspend. The WKUP filed in S_PWSR indicates the wakeup request. When a bit
of IDLE fields gets 1, V
R
4120A can disable the system clock for the corresponding device by setting the STOP field in
S_PWCR. When a bit of WKUP fields in S_PWSR gets 1, V
R
4120A must enable the system clock for the
corresponding device by resetting the STOP field in S_PWCR. The S_ PWSR is initialized to 0 at reset and contains
the following fields:
Bits Field R/W Default Description
31:14 Reserved R 0 Hardwired to 0.
13 PCIWKUP R 0 Indicates the wakeup request from PCI Controller:
0 = no wakeup request is pending.
1 = wakeup request is pending.
12 Reserved R 0 Hardwired to 0.
11 MAC2WKUP R 0 Indicates the wakeup request from Ethernet Controller #2:
0 = no wakeup request is pending.
1 = wakeup request is pending.
10 ATMWKUP R 0 Indicates the wakeup request from ATM Cell Processor:
0 = no wakeup request is pending.
1 = wakeup request is pending.
9 MACWKUP R 0 Indicates the wakeup request form Ethernet Controller #1:
0 = no wakeup request is pending.
1 = wakeup request is pending.
8 USBWKUP R 0 Indicates the wakeup request from USB Controller:
0 = no wakeup request is pending.
1 = wakeup request is pending.
7:6 Reserved R 0 Hardwired to 0.
5 PCIIDLE R 0 Indicates the idle status in PCI Controller:
0 = not in idle state. It means PCI Controller is not ready to suspend.
1 = in idle state. It means PCI Controller is ready to suspend.
4 Reserved R 0 Hardwired to 0.
3 MAC2IDLE R 0 Indicates the idle status in Ethernet Controller #2:
0 = not in idle state. It means Ethernet Controller #2 is not ready to suspend.
1 = in idle state. It means Ethernet Controller #2 is ready to suspend.
2 ATMIDLE R 0 Indicates the idle status in ATM Cell Processor:
0 = not in idle state. It means ATM Cell Processor is not ready to suspend.
1 = in idle state. It means ATM Cell Processor is ready to suspend.
1 MACIDLE R 0 Indicates the idle status in Ethernet Controller #1:
0 = not in idle state. It means Ethernet Controller #1 is not ready to suspend.
1 = in idle state. It means Ethernet Controller #1 is ready to suspend.
0 USBIDLE R 0 Indicates the idle status in USB Controller:
0 = not in idle state. It means USB Controller is not ready to suspend.
1 = in idle state. It means USB Controller is ready to suspend.