System Control Module

9.5.7.8Power Manager Oscillator Status Register (POSR)

The power manager oscillator status register (POSR) is a single-bit, read-only register that contains a status bit indicating whether the 32.768-kHz oscillator is up to speed after a hardware reset. This bit is set after the expiration of a timer that is clocked by a ring oscillator. This bit will be set within 2–10 seconds after the negation of nRESET.

Bit

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R/W

 

 

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reset

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Bit

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R/W

 

 

 

 

 

 

 

Reserved

 

 

 

 

 

 

OOK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reset

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bit

Name

 

 

 

 

 

 

Description

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

OOK

 

Oscillator OK.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

This bit is cleared on a hardware reset and set after the 32.768-kHz oscillator has

 

 

 

 

stabilized. This bit is read only.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

31..28

 

Reserved.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9.5.8Power Manager Register Locations

Table 9-4shows the registers associated with the power manager and the physical addresses used to access them

.

Table 9-4.

Power Manager Register Locations

 

 

 

 

 

 

 

Address

Name

Description

 

 

 

 

 

 

0h

9002 0000

PMCR

Power manager control register

 

 

 

 

 

 

0h

9002 0004

PSSR

Power manager sleep status register

 

 

 

 

 

 

0h

9002 0008

PSPR

Power manager scratch pad register

 

 

 

 

 

 

0h

9002 000C

PWER

Power manager wake-up enable register

 

 

 

 

 

 

0h

9002 0010

PCFR

Power manager general configuration register

 

 

 

 

 

 

0h

9002 0014

PPCR

Power manager PLL configuration register

 

 

 

 

 

 

0h

9002 0018

PGSR

Power manager GPIO sleep state register

 

 

 

 

 

 

0h

9002 001C

POSR

Power manager oscillator status register

 

 

 

 

 

9-40

SA-1100 Developer’s Manual

Page 110
Image 110
Intel SA-1100 manual Power Manager Register Locations, Power Manager Oscillator Status Register Posr