Pmuwaitreg (0X0B00 00A8) - NEC VR4181 mPD30181 User Manual

10.7.3 PMUWAITREG (0x0B00 00A8)

Bit 15
Name Reserved
R/W R
RTCRST 0
Other resets 0
Bit 7
Name WCOUNT
7
R/W R/W
RTCRST 0
Other resets Note
Bit Name
15, 14 Reserved
13 to 0 WCOUNT(13:0)
Note Holds the value before reset
This register is used to set the activation wait time when the CPU core is activated.
This register is set to 0x2C00 (i.e. 343.75 ms activation wait time) after RTC reset. Therefore, the 343.75 ms wait
time is always inserted as an activation wait time, when the CPU core is activated immediately after RTC reset. The
activation wait time can be changed by setting this register for the CPU core activation from the Hibernate mode.
When this register is set to 0x0, 0x1, 0x2, 0x3, or 0x4, the operation is not guaranteed. Software must set the
value of this register to greater than 0x4 to assure reliable operation.
CHAPTER 10 POWER MANAGEMENT UNIT (PMU)
14 13
Reserved WCOUNT WCOUNT
13
R R/W
0 1
0 Note
6 5
WCOUNT WCOUNT WCOUNT
6 5
R/W R/W
0 0
Note Note
0 is returned when read
Activation wait time timer count value
Activation wait time = WCOUNT(13:0) x (1/32.768) ms
User's Manual U14272EJ3V0UM
12 11 10
WCOUNT WCOUNT
12 11 10
R/W R/W R/W
0 1
Note Note Note
4 3
WCOUNT WCOUNT
4 3
R/W R/W R/W
0 0
Note Note Note
Function
9 8
WCOUNT WCOUNT
9 8
R/W R/W
1 0 0
Note Note
2 1 0
WCOUNT WCOUNT
2 1 0
R/W R/W
0 0 0
Note Note
213