UM10503
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© NXP B.V. 2012. All rights reserved.
User manual
Rev. 1.3 — 6 July 2012
75 of 1269
9.1 How to read this chapter
The available peripherals vary for different parts.
•
Ethernet: available only on LPC435x/3x.
•
USB0: available only on LPC435x/3x/2x.
•
USB1: available only on LPC435x/3x.
If a peripheral is not available, the corresponding bits in the CREG registers are reserved.
The following registers or register bits are implemented only on parts with on-chip flash:
•
USB0FLADJ register
•
USB1FLADJ register
•
FALSHCFGA register
•
FLASHCFGB register
•
SAMPLECTRL bit in the CREG0 register
9.2 Basic configuration
The CREG block is configured as follows:
•
See
for clocking and power control.
•
The CREG block cannot be reset by software.
UM10503
Chapter 9: LPC43xx Configuration Registers (CREG)
Rev. 1.3 — 6 July 2012
User manual
Table 41.
CREG clocking and power control
Base clock
Branch clock
Operating frequency
CREG
BASE_M4_CLK
CLK_M4_CREG
up to 204 MHz