vco1
Contains settings that control the Peripheral PLL VCO. The VCO1 register contains the numerator and denominator counter settings.
Module Instance | Base Address | Register Address |
---|---|---|
i_clk_mgr_perpllgrp | 0xFFD040C0 | 0xFFD040C4 |
Offset: 0x4
Access: RW
Important: The value of a reserved bit must be maintained in software. When you modify registers containing reserved bit fields, you must use a read-modify-write operation to preserve state and prevent indeterminate system behavior.
Bit Fields | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
Reserved |
denom RW 0x1 |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Reserved |
numer RW 0x1 |
vco1 Fields
Bit | Name | Description | Access | Reset |
---|---|---|---|---|
21:16 | denom | Denominator in VCO output frequency equation. For incremental frequency change, if the new value lead to less than 20% of the frequency change, this value can be changed without resetting the PLL. The Numerator and Denominator can not be changed at the same time for incremental frequency changed. |
RW | 0x1 |
12:0 | numer | Numerator in VCO output frequency equation. For incremental frequency change, if the new value lead to less than 20% of the frequency change, this value can be changed without resetting the PLL. The Numerator and Denominator can not be changed at the same time for incremental frequency changed. |
RW | 0x1 |