PXR40RM Datasheet, PDF (171/1434 Pages) Freescale Semiconductor, Inc – PXR40 Microcontroller

Frequency Modulated Phase-Locked Loop (FMPLL)
Field
11–15
FMDAC_CTL
16–0
Table 6-9. ESYNFMCR Bit Field Descriptions
Description
Digital-to-Analog Converter Control. This bitfield value is written to the DAC to control the FM depth by
percentage during FM operation.
00100 – 1%
01000 – 2%
01100 – 3%
10000 – 4%
These values have been shown in characterization data to produce the specified FM percentage within the
device specification. However, the user may program intermediate values to trim the FM percentage for a
specific application if desired. Do not program FMDAC_CTL to any value that will cause the system
frequency to exceed the maximum specification.
Reserved
Freescale Semiconductor
PXR40 Microcontroller Reference Manual, Rev. 1
6-13