OM13008,598 NXP Semiconductors, OM13008,598 Datasheet - Page 12

• Manufacturer Part Number: OM13008,598
• Description: BOARD LPC XPRESSO LPC122X
• Manufacturer: NXP Semiconductors
• Series: LPCXpressor

Specifications of OM13008,598

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-6642; OM13008

NXP Semiconductors
4.5 Register description
UM10441
User manual
Fig 3.
SYSCONFIG
wdt_osc_clk
sys_osc_clk
irc_osc_clk
irc_osc_clk
LPC122x CGU block diagram
SYSPLLCLKSEL
sys_pllclkin
All registers, regardless of size, are on word address boundaries. Details of the registers
appear in the description of each function.
syscon RTC clock divider
rtc_osc 1 Hz delayed clk
rtc_osc 1 kHz clk
rtc_osc 1 Hz clk
MAINCLKSEL
sys_pllclkout
SYS PLL
wdt_osc_clk
irc_osc_clk
main clock
All information provided in this document is subject to legal disclaimers.
Rev. 1.1 — 10 March 2011
WWDT
PMU
DIVIDER
CLOCK
wdt_osc_clk
sys_osc_clk
irc_osc_clk
3
7
WDCLKSEL
system clock
CLKOUTUEN
SYSCFG
Chapter 4: LPC122x System control (SYSCON)
AHBCLKCTRL[1:31]
31
DIVIDER
DIVIDER
DIVIDER
DIVIDER
CLOCK
CLOCK
CLOCK
CLOCK
RTC
clkout_clk
peripheral clocks
(SSP, UART0, UART1)
peripheral clocks
(IOCONFIG glitch filter)
RTC clock select in PMU
wdt_clk
sys_ahb_clk[0]
(system)
UM10441
© NXP B.V. 2011. All rights reserved.
AHB clocks
1 to 31
(memories
and peripherals)
12 of 442