UM10503
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© NXP B.V. 2012. All rights reserved.
User manual
Rev. 1.3 — 6 July 2012
78 of 1269
NXP Semiconductors
UM10503
Chapter 9: LPC43xx Configuration Registers (CREG)
9.4.1 CREG0 control register
M0APPMEMMAP
R/W
0x404
ARM Cortex-M0 memory
mapping
0x2000
0000
<tbd>
<tbd>
USB0FLADJ
R/W
0x500
USB0 frame length adjust
register
0x20
<tbd>
<tbd>
USB1FLADJ
R/W
0x600
USB1 frame length adjust
register
0x20
<tbd>
<tbd>
Table 42.
Register overview: Configuration registers (base address 0x4004 3000)
Name
Access
Address
offset
Description
Reset
value
Reset
value after
EMC,
UART0/3
boot
Reset
value
after
USB0/1
boot
Reference
Table 43.
CREG0 register (CREG0, address 0x4004 3004) bit description
Bit
Symbol
Value
Description
Reset
value
Access
0
EN1KHZ
Enable 1 kHz output.
0
R/W
0
1 kHz output disabled.
1
1 kHz output enabled.
1
EN32KHZ
Enable 32 kHz output
0
R/W
0
32 kHz output disabled.
1
32 kHz output enabled.
2
RESET32KHZ
32 kHz oscillator reset
1
R/W
0
Clear reset.
1
Reset active.
3
PD32KHZ
32 kHz power control.
1
R/W
0
Powered.
1
Powered-down.
4
-
Reserved
-
-
5
USB0PHY
USB0 PHY power control.
1
R/W
0
Enable USB0 PHY power.
1
Disable USB0 PHY. PHY powered
down.
7:6
ALARMCTRL
RTC_ALARM pin output control
0
R/W
0x0
RTC alarm.
0x1
Event router event.
0x2
Reserved.
0x3
Inactive.