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UM10503
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© NXP B.V. 2012. All rights reserved.
User manual
Rev. 1.3 — 6 July 2012
1251 of 1269
NXP Semiconductors
UM10503
Chapter 50: Supplementary information
BASE_PERIPH_CLK control register . . . . . . 119
BASE_USB1_CLK control register . . . . . . . . 120
BASE_OUT_CLK register . . . . . . . . . . . . . . 122
BASE_APLL_CLK register . . . . . . . . . . . . . . 123
BASE_CGU_OUT1_CLK register. . . . . . . . . 124
Functional description . . . . . . . . . . . . . . . . . 125
32 kHz oscillator . . . . . . . . . . . . . . . . . . . . . . 125
IRC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Crystal oscillator . . . . . . . . . . . . . . . . . . . . . . 125
PLL0 (PLL0USB and PLL0AUDIO) . . . . . . . 125
11.7.4.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
11.7.4.2 PLL0 description . . . . . . . . . . . . . . . . . . . . . . 126
11.7.4.3 Use of PLL0 operating modes . . . . . . . . . . . 127
11.7.4.3.1 Normal Mode . . . . . . . . . . . . . . . . . . . . . . . . 127
11.7.4.3.2 Mode 1a: Normal operating mode without
post-divider and without pre-divider . . . . . . . 128
11.7.4.3.3 Mode 1b: Normal operating mode with
post-divider and without pre-divider . . . . . . . 128
11.7.4.3.4 Mode 1c: Normal operating mode without
post-divider and with pre-divider. . . . . . . . . . 128
11.7.4.3.5 Mode 1d: Normal operating mode with
post-divider and with pre-divider. . . . . . . . . . 129
11.7.4.5 Usage notes. . . . . . . . . . . . . . . . . . . . . . . . . 129
11.7.5 Fractional
PLL1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
11.7.6.1 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
11.7.6.2 PLL1 description . . . . . . . . . . . . . . . . . . . . . 131
11.7.6.3 Lock detector . . . . . . . . . . . . . . . . . . . . . . . . 131
11.7.6.4 Power-down control . . . . . . . . . . . . . . . . . . . 131
11.7.6.5 Selectable feedback divider clock . . . . . . . . 132
11.7.6.6 Direct output mode. . . . . . . . . . . . . . . . . . . . 132
11.7.6.7 Divider ratio programming . . . . . . . . . . . . . . 132
11.7.6.8 Frequency selection. . . . . . . . . . . . . . . . . . . 132
Integer mode . . . . . . . . . . . . . . . . . . . . . . . . . 132
Non-integer mode . . . . . . . . . . . . . . . . . . . . . 133
Direct mode . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Power-down mode . . . . . . . . . . . . . . . . . . . . . 133
Example CGU configurations . . . . . . . . . . . 134
Programming the CGU for Deep-sleep and
Power-down modes . . . . . . . . . . . . . . . . . . . 134
PLL0USB settings for USB applications . . . 134
PLL0AUDIO settings for audio applications. 135
11.8.4.1 Using the fractional divider. . . . . . . . . . . . . . 135
11.8.4.2 Bypassing the fractional divider . . . . . . . . . . 137
Chapter 12: LPC43xx Clock Control Unit (CCU)
How to read this chapter . . . . . . . . . . . . . . . . 139
Basic configuration . . . . . . . . . . . . . . . . . . . . 139
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
General description . . . . . . . . . . . . . . . . . . . . 139
Register description . . . . . . . . . . . . . . . . . . . 142
Power mode register . . . . . . . . . . . . . . . . . . 146
Base clock status register . . . . . . . . . . . . . . 146
CCU1/2 branch clock configuration registers 148
CCU1/2 branch clock status registers . . . . . 150
Chapter 13: LPC43xx Reset Generation Unit (RGU)
How to read this chapter . . . . . . . . . . . . . . . . 152
Basic configuration . . . . . . . . . . . . . . . . . . . . 152
General description . . . . . . . . . . . . . . . . . . . . 152
Reset hierarchy . . . . . . . . . . . . . . . . . . . . . . 155
Register overview . . . . . . . . . . . . . . . . . . . . . 156
RGU reset control register . . . . . . . . . . . . . . 159
RGU reset status register . . . . . . . . . . . . . . . 162
RGU reset active status register. . . . . . . . . . 168
Reset external status registers . . . . . . . . . . . 172
13.4.4.1 Reset external status register 0 for
CORE_RST . . . . . . . . . . . . . . . . . . . . . . . . . 173
13.4.4.2 Reset external status register 1 for
PERIPH_RST . . . . . . . . . . . . . . . . . . . . . . . 173
13.4.4.3 Reset external status register 2 for
MASTER_RST. . . . . . . . . . . . . . . . . . . . . . . 174
13.4.4.4 Reset external status register 4 for
WWDT_RST . . . . . . . . . . . . . . . . . . . . . . . . 174
13.4.4.5 Reset external status register 5 for
CREG_RST . . . . . . . . . . . . . . . . . . . . . . . . . 174
13.4.4.6 Reset external status registers for
PERIPHERAL_RESET . . . . . . . . . . . . . . . . 174
13.4.4.7 Reset external status registers for
MASTER_RESET . . . . . . . . . . . . . . . . . . . . 175
Chapter 14: LPC43xx Pin configuration
How to read this chapter . . . . . . . . . . . . . . . . 176
Pin description . . . . . . . . . . . . . . . . . . . . . . . 176
Chapter 15: LPC43xx System Control Unit (SCU)/
IO configuration
How to read this chapter . . . . . . . . . . . . . . . . 281
Basic configuration. . . . . . . . . . . . . . . . . . . . 281