Nxp semiconductors – NXP Semiconductors LPC24XX UM10237 User Manual
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UM10237_4
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User manual
Rev. 04 — 26 August 2009
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NXP Semiconductors
UM10237
Chapter 4: LPC24XX Clocking and power control
3.2.6 PLL Status register (PLLSTAT - 0xE01F C088)
The read-only PLLSTAT register provides the actual PLL parameters that are in effect at
the time it is read, as well as the PLL status. PLLSTAT may disagree with values found in
PLLCON and PLLCFG because changes to those registers do not take effect until a
proper PLL feed has occurred (see
Section 4–3.2.9 “PLL Feed register (PLLFEED -
).
13672 2
448.0041
13733 2
450.0029
13733 3
300.0020
13916 2
455.9995
14099 2
461.9960
14420 3
315.0097
14648 2
479.9857
15381 2
504.0046
15381 3
336.0031
15564 3
340.0008
15625 2
512.0000
15869 2
519.9954
16113 2
527.9908
16479 3
359.9892
17578 3
383.9973
18127 3
395.9904
18311 3
400.0099
19226 3
419.9984
19775 3
431.9915
20508 3
448.0041
20599 3
449.9920
20874 3
455.9995
21149 3
462.0070
21973 3
480.0075
23071 3
503.9937
23438 3
512.0109
23804 3
520.0063
24170 3
528.0017
Table 46.
Multiplier values for a 32 kHz oscillator
Multiplier (M)
Pre-divide (N)
F
CCO