MC9S08GB32 Motorola, MC9S08GB32 Datasheet - Page 119

• Manufacturer Part Number: MC9S08GB32
• Description: Microcontrollers
• Manufacturer: Motorola

Freescale Semiconductor
OSCSTEN — Enable Oscillator in Off Mode
7.5.2
LOLRE — Loss of Lock Reset Enable
MFD — Multiplication Factor
The OSCSTEN bit controls whether or not the oscillator circuit remains enabled when the ICG enters
off mode.
The LOLRE bit determines what type of request is made by the ICG following a loss of lock indication.
The LOLRE bit only has an effect when LOLS is set.
The MFD bits control the programmable multiplication factor in the FLL loop. The value specified by
the MFD bits establishes the multiplication factor (N) applied to the reference frequency. Writes to the
MFD bits will not take effect if a previous write is not complete. Select a low enough value for N such
that f
1 = Oscillator enabled when ICG is in off mode, CLKS = 1X and REFST = 1.
0 = Oscillator disabled when ICG is in off mode unless ENABLE is high, CLKS = 10, and
1 = Generate a reset request on loss of lock.
0 = Generate an interrupt request on loss of lock.
ICGDCLK
REFST = 1.
ICG Control Register 2 (ICGC2)
does not exceed its maximum specified value.
Reset:
Read:
Write:
LOLRE
Bit 7
0
Figure 7-14. ICG Control Register 2 (ICGC2)
Table 7-7. MFD Multiplication Factor Select
MFD Value
MC9S08GB/GT Data Sheet, Rev. 2.3
000
001
010
011
100
101
110
111
6
0
MFD
Multiplication Factor (N)
5
0
4
0
10
12
14
16
18
4
6
8
LOCRE
3
0
2
0
ICG Registers and Control Bits
RFD
1
0
Bit 0
0
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