The following table shows the CPU1_PLL_CTRL1 Register bit assignments.
Table 4-66 CPU1_PLL_CTRL1 Register bit assignments
Bits
Name
Type
Function
[31]
-
-
Reserved.
[30:28] POSTDIV2
RW
Second post-divide value.
Post-divide value=POSTDIV2.
Reset value
0b1
.
[27]
-
-
Reserved.
[26:24] POSTDIV1
RW
First post-divide value.
Post-divide value=POSTDIV1.
Reset value
0b1
.
[23:0]
FRAC
RW
Fractional part of feedback divide value.
Fraction=FRAC/2^
24
.
Reset value
0x0
.
Note
The example values in this register, and the clock frequency they generate, are part of a clock
configuration which enables correct operation of the N1 SoC. Further SoC testing and measurement, by
Arm or by other developers, might result in new register values.
4.5.36
CLUS_PLL_CTRL0 Register
The CLUS_PLL_CTRL0 Register characteristics are:
Purpose
This register, and register CLUS_PLL_CTRL1, control the settings of clock control PLL
CLUSPLL.
Usage constraints
There are no usage constraints.
Configurations
Available in all N1 board configurations.
Memory offset and full register reset value
See
4.5.1 Serial Configuration Control registers summary
4 Programmers model
4.5 Serial Configuration Control registers
101489_0000_02_en
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