MC9S12Q32VFA16 FREESCALE [Freescale Semiconductor, Inc], MC9S12Q32VFA16 Datasheet - Page 256
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MC9S12Q32VFA16
Manufacturer Part Number
MC9S12Q32VFA16
Description
HCS12 Microcontrollers
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.MC9S12Q32VFA16.pdf
(644 pages)
- Current page: 256 of 644
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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
PLLCLK
0
5
Bit 5
=
5
0
MC9S12Q128
2xOSCCLKx
SYNR
Rev 1.10
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
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