Philips LPC214 Series User Manual page 37

Philips Semiconductors
Volume 1
additional circuitry to reduce power. Each bit in PCONP controls one of the peripherals.
The bit numbers correspond to the related peripheral number as shown in the VPB
peripheral map
Memory Addressing" chapter.
If a peripheral control bit is 1, that peripheral is enabled. If a peripheral bit is 0, that
peripheral is disabled to conserve power. For example if bit 19 is 1, the I
enabled. If bit 19 is 0, the I
Important: valid read from a peripheral register and valid write to a peripheral
register is possible only if that peripheral is enabled in the PCONP register!
Table 26:
Bit
0
1
2
3
4
5
6
7
8
9
10
11
12
18:13 -
19
20
30:21 -
31
User manual
Table 2 "VPB peripheries and base addresses"
2
C1 interface is disabled.
Power Control for Peripherals register (PCONP - address 0xE01F C0C4) bit
description
Symbol Description
- Reserved, user software should not write ones to reserved bits. The
value read from a reserved bit is not defined.
PCTIM0 Timer/Counter 0 power/clock control bit.
PCTIM1 Timer/Counter 1 power/clock control bit.
PCUART0 UART0 power/clock control bit.
PCUART1 UART1 power/clock control bit.
PCPWM0 PWM0 power/clock control bit.
- Reserved, user software should not write ones to reserved bits. The
value read from a reserved bit is not defined.
2
PCI2C0 The I C0 interface power/clock control bit.
PCSPI0 The SPI0 interface power/clock control bit.
PCRTC The RTC power/clock control bit.
PCSPI1 The SSP interface power/clock control bit.
- Reserved, user software should not write ones to reserved bits. The
value read from a reserved bit is not defined.
PCAD0 A/D converter 0 (ADC0) power/clock control bit.
Note: Clear the PDN bit in the AD0CR before clearing this bit, and set
this bit before setting PDN.
Reserved, user software should not write ones to reserved bits. The
value read from a reserved bit is not defined.
2
PCI2C1 The I C1 interface power/clock control bit.
PCAD1 A/D converter 1 (ADC1) power/clock control bit.
Note: Clear the PDN bit in the AD1CR before clearing this bit, and set
this bit before setting PDN.
Reserved, user software should not write ones to reserved bits. The
value read from a reserved bit is not defined.
PUSB USB power/clock control bit.
Rev. 01 — 15 August 2005
UM10139
Chapter 3: System Control Block
in the "LPC2141/2/4/6/8
2
C1 interface is
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Reset
value
NA
1
1
1
1
1
NA
1
1
1
1
NA
1
NA
1
1
NA
0
37