32.22.16 PMC Status Register

Name: PMC_SR
Offset: 0x0068
Reset: 0x00010008
Property: Read-only

Bit 3130292827262524 
        GCKRDY 
Access R 
Reset 0 
Bit 2322212019181716 
   XT32KERRFOSCFDSCFDEVMOSCRCSMOSCSELS 
Access RRRRRR 
Reset 000001 
Bit 15141312111098 
      PCKRDY2PCKRDY1PCKRDY0 
Access RRR 
Reset 000 
Bit 76543210 
 OSCSELSLOCKU  MCKRDY LOCKAMOSCXTS 
Access RRRRR 
Reset 00100 

Bit 24 – GCKRDY Generic Clock Status

ValueDescription
0

One of the generic clocks is not ready yet.

1

All generic clocks are ready.

Bit 21 – XT32KERR 32.768 kHz Crystal Oscillator Error

ValueDescription
0 The frequency of the 32.768 kHz crystal oscillator is correct (32.768 kHz ±1%) or the monitoring is disabled.
1 The frequency of the 32.768 kHz crystal oscillator is incorrect or has been incorrect for an elapsed period of time since the monitoring has been enabled.

Bit 20 – FOS Clock Failure Detector Fault Output Status

ValueDescription
0

The fault output of the clock failure detector is inactive.

1

The fault output of the clock failure detector is active.

Bit 19 – CFDS Clock Failure Detector Status

ValueDescription
0

A clock failure of the 8 to 24 MHz crystal oscillator is not detected.

1

A clock failure of the 8 to 24 MHz crystal oscillator is detected.

Bit 18 – CFDEV Clock Failure Detector Event

ValueDescription
0

No clock failure detection of the 8 to 24 MHz crystal oscillator has occurred since the last read of PMC_SR.

1

At least one clock failure detection of the 8 to 24 MHz crystal oscillator has occurred since the last read of PMC_SR.

Bit 17 – MOSCRCS 12 MHz RC Oscillator Status

ValueDescription
0

12 MHz RC oscillator is not stabilized.

1

12 MHz RC oscillator is stabilized.

Bit 16 – MOSCSELS Main Oscillator Selection Status

ValueDescription
0

Selection is in progress.

1

Selection is done.

Bits 8, 9, 10 – PCKRDYx Programmable Clock Ready Status

ValueDescription
0 Programmable Clock x is not ready.
1 Programmable Clock x is ready.

Bit 7 – OSCSELS Slow Clock Oscillator Selection

ValueDescription
0

Embedded 64 kHz RC oscillator is selected.

1

32.768 kHz crystal oscillator is selected.

Bit 6 – LOCKU UPLL Clock Status

ValueDescription
0

UPLL Clock is not ready.

1

UPLL Clock is ready.

Bit 3 – MCKRDY Main System Bus Clock Status

ValueDescription
0

Main System Bus clock is not ready.

1

Main System Bus clock is ready.

Bit 1 – LOCKA PLLA Lock Status

ValueDescription
0

PLLA is not locked.

1

PLLA is locked.

Bit 0 – MOSCXTS 8 to 24 MHz Crystal Oscillator Status

ValueDescription
0

8 to 24 MHz crystal oscillator is not stabilized.

1

8 to 24 MHz crystal oscillator is stabilized.