mc9s12c32mpb16 Freescale Semiconductor, Inc, mc9s12c32mpb16 Datasheet - Page 256

• Manufacturer Part Number: mc9s12c32mpb16
• Description: Hcs12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 9 Clocks and Reset Generator (CRGV4) Block Description
9.3.2.1
The SYNR register controls the multiplication factor of the PLL. If the PLL is on, the count in the loop
divider (SYNR) register effectively multiplies up the PLL clock (PLLCLK) from the reference frequency
by 2 x (SYNR+1). PLLCLK will not be below the minimum VCO frequency (f
Read: anytime
Write: anytime except if PLLSEL = 1
256
Module Base + 0x0000
Reset
ARMCOP
Register
0x000B
Name
W
R
CRG Synthesizer Register (SYNR)
0
0
7
If PLL is selected (PLLSEL=1), Bus Clock = PLLCLK / 2
Bus Clock must not exceed the maximum operating system frequency.
Write to this register initializes the lock detector bit and the track detector
bit.
W
R
= Unimplemented or Reserved
Bit 7
Bit 7
0
0
0
6
Figure 9-3. CRG Register Summary (continued)
Figure 9-4. CRG Synthesizer Register (SYNR)
= Unimplemented or Reserved
Bit 6
6
0
SYN5
MC9S12C-Family / MC9S12GC-Family
PLLCLK
0
5
Bit 5
=
5
0
2xOSCCLKx
SYNR
Rev 01.23
NOTE
NOTE
0
4
Bit 4
4
0
--------------------------------- -
(
(
REFDV
SYNR
SYN3
0
3
+
Bit 3
+
1
3
0
1
)
)
SYN2
0
2
Bit 2
2
0
SCM
).
Freescale Semiconductor
SYN1
Bit 1
0
1
1
0
Bit 0
Bit 0
SYN0
0
0
0