NXP Semiconductors freescale KV4 Series, Reference Manual

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MCG_C6 field descriptions (continued)
Field Description
0 No interrupt request is generated on loss of lock.
1 Generate an interrupt request on loss of lock.
6
PLLS
PLL Select
Controls whether the PLL or FLL output is selected as the MCG source when CLKS[1:0]=00. If the PLLS
bit is cleared and PLLCLKEN 0 is not set, the PLL is disabled in all modes. If the PLLS is set, the FLL is
disabled in all modes.
0 FLL is selected.
1
PLL is selected (PRDIV 0 need to be programmed to the correct divider to generate a PLL reference
clock in the range of 8–16 MHz prior to setting the PLLS bit).
5
CME0
Clock Monitor Enable
Enables the loss of clock monitoring circuit for the OSC0 external reference mux select. The LOCRE0 bit
will determine if a interrupt or a reset request is generated following a loss of OSC0 indication. The CME0
bit must only be set to a logic 1 when the MCG is in an operational mode that uses the external clock
(FEE, FBE, PEE, PBE, or BLPE) . Whenever the CME0 bit is set to a logic 1, the value of the RANGE0
bits in the C2 register should not be changed. CME0 bit should be set to a logic 0 before the MCG enters
any Stop mode. Otherwise, a reset request may occur while in Stop mode. CME0 should also be set to a
logic 0 before entering VLPR or VLPW power modes if the MCG is in BLPE mode.
0 External clock monitor is disabled for OSC0.
1 External clock monitor is enabled for OSC0.
VDIV VCO Divider
Selects the amount to divide the VCO output of the PLL. The VDIV bits establish the multiplication factor
(M) applied to the reference clock frequency. After the PLL is enabled (by setting either PLLCLKEN or
PLLS), the VDIV value must not be changed when LOCK is zero.
Table 30-9. PLL VCO Divide Factor
VDIV Multiply
Factor VDIV Multiply
Factor VDIV Multiply
Factor VDIV Multiply
Factor
00000 16 01000 24 10000 32 11000 40
00001 17 01001 25 10001 33 11001 41
00010 18 01010 26 10010 34 11010 42
00011 19 01011 27 10011 35 11011 43
00100 20 01100 28 10100 36 11100 44
00101 21 01101 29 10101 37 11101 45
00110 22 01110 30 10110 38 11110 46
00111 23 01111 31 10111 39 11111 47
Memory Map/Register Definition
KV4x Reference Manual, Rev. 2, 02/2015
556
Preliminary
Freescale Semiconductor, Inc.