SCG_LPFLLSTAT field descriptions (continued)
Field
Description
When LPFLL is enabled and auto trimming is enabled (LPFLLTREN=1 and LPFLLTRUP=1) these register
gets uploaded with the trimmed value. When LPFLLTRUP=0, these register is writeable to allow user
programming of trim values.
18.4 Functional description
18.4.1 SCG Clock Mode Transitions
The following figure shows the valid clock mode transitions supported by SCG.
Slow IRC (SIRC) boot mode is not supported on this device.
NOTE
When a transition between run modes (RUN, VLRUN) is
required, the SCG should complete the switch to the clock
mode as defined in the SCG clock control register first. Once
the switch to the clock mode is completed, the system can then
initiate the request for the selected run mode.
For example, if a transition from RUN mode to VLRUN is
required, first complete any required clock change. Initiate the
VLRUN request after the clock change has completed.
The power modes are chip specific. For more details about power mode assignments, see
power management and system mode control information.
The modes of operation listed in the following table are the valid modes for this
implementation of the SCG.
Table 18-1. SCG modes of operation
Mode
Description
System Oscillator Clock
(SOSC)
System Oscillator Clock (SOSC) mode is entered when all the following conditions occur:
• RUN MODE: 0001 is written to RCCR[SCS].
VLRUN MODE: 0001 is written to VCCR[SCS].
• SOSCEN = 1
• SOSCVLD = 1
In SOSC mode, SCGCLKOUT and system clocks are derived from the external System Oscillator
Clock (SOSC).
Table continues on the next page...
Functional description
Kinetis KE1xZ256 Sub-Family Reference Manual, Rev. 3, 07/2018
402
NXP Semiconductors
Summary of Contents for Kinetis KE1xZ256
Page 2: ...Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 2 NXP Semiconductors...
Page 178: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 178 NXP Semiconductors...
Page 356: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 356 NXP Semiconductors...
Page 410: ...Interrupts Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 410 NXP Semiconductors...
Page 604: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 604 NXP Semiconductors...
Page 634: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 634 NXP Semiconductors...
Page 674: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 674 NXP Semiconductors...
Page 820: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 820 NXP Semiconductors...
Page 1030: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 1030 NXP Semiconductors...
Page 1052: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 1052 NXP Semiconductors...
Page 1066: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 1066 NXP Semiconductors...
Page 1268: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 1268 NXP Semiconductors...
Page 1314: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 1314 NXP Semiconductors...
Page 1316: ...Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 1316 NXP Semiconductors...