S_Pwsr (Power Status Register) - NEC uPD98502 User Manual

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 4120A can disable the system clock for the corresponding device by setting the STOP field in
R
S_PWCR. When a bit of WKUP fields in S_PWSR gets 1, V
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
31:14 Reserved
13 PCIWKUP
12 Reserved
11 MAC2WKUP
10 ATMWKUP
9 MACWKUP
8 USBWKUP
7:6 Reserved
5 PCIIDLE
4 Reserved
3 MAC2IDLE
2 ATMIDLE
1 MACIDLE
0 USBIDLE
200
CHAPTER 3 SYSTEM CONTROLLER
R/W Default
R 0 Hardwired to 0.
R 0 Indicates the wakeup request from PCI Controller:
0 = no wakeup request is pending.
1 = wakeup request is pending.
R 0 Hardwired to 0.
R 0 Indicates the wakeup request from Ethernet Controller #2:
0 = no wakeup request is pending.
1 = wakeup request is pending.
R 0 Indicates the wakeup request from ATM Cell Processor:
0 = no wakeup request is pending.
1 = wakeup request is pending.
R 0 Indicates the wakeup request form Ethernet Controller #1:
0 = no wakeup request is pending.
1 = wakeup request is pending.
R 0 Indicates the wakeup request from USB Controller:
0 = no wakeup request is pending.
1 = wakeup request is pending.
R 0 Hardwired to 0.
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.
R 0 Hardwired to 0.
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.
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.
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.
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.
Preliminary User's Manual S15543EJ1V0UM
4120A must enable the system clock for the
R
Description