Register Description; User Manual - Philips LPC2101 User Manual

Philips Semiconductors
Volume 1

17.4 Register description

The RTC includes a number of registers. The address space is split into four sections by
functionality. The first eight addresses are the Miscellaneous Register Group
(Section
(Section
(Section
The Real Time Clock includes the register shown in
the registers follow.
Table 184: Real Time Clock (RTC) register map
Name
ILR
CTC
CCR
CIIR
AMR
CTIME0
CTIME1
CTIME2
SEC
MIN
HOUR
DOM
DOW
DOY
MONTH
YEAR
ALSEC
ALMIN
ALHOUR
ALDOM
ALDOW
ALDOY
ALMON
ALYEAR
PREINT
PREFRAC 15
[1]

User manual

17.4.2). The second set of eight locations are the Time Counter Group
17.4.12). The third set of eight locations contain the Alarm Register Group
17.4.14). The remaining registers control the Reference Clock Divider.
Size Description
2 Interrupt Location Register
15 Clock Tick Counter
4 Clock Control Register
8 Counter Increment Interrupt Register
8 Alarm Mask Register
32 Consolidated Time Register 0
32 Consolidated Time Register 1
32 Consolidated Time Register 2
6 Seconds Counter
6 Minutes Register
5 Hours Register
5 Day of Month Register
3 Day of Week Register
9 Day of Year Register
4 Months Register
12 Years Register
6 Alarm value for Seconds
6 Alarm value for Minutes
5 Alarm value for Seconds
5 Alarm value for Day of Month
3 Alarm value for Day of Week
9 Alarm value for Day of Year
4 Alarm value for Months
12 Alarm value for Year
13 Prescaler value, integer portion
Prescaler value, integer portion
Registers in the RTC other than those that are part of the Prescaler are not affected by chip Reset. These
registers must be initialized by software if the RTC is enabled. Reset value reflects the data stored in used
bits only. It does not include reserved bits content.
Rev. 01 — 12 January 2006
UM10161
Chapter 17: RTC
Table 184. Detailed descriptions of
Access Reset
[1]
value
R/W *
RO *
R/W *
R/W *
R/W *
RO *
RO *
RO *
R/W *
R/W *
R/W *
R/W *
R/W *
R/W *
R/W *
R/W *
R/W *
R/W *
R/W *
R/W *
R/W *
R/W *
R/W *
R/W *
R/W 0
R/W 0
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Address
0xE002 4000
0xE002 4004
0xE002 4008
0xE002 400C
0xE002 4010
0xE002 4014
0xE002 4018
0xE002 401C
0xE002 4020
0xE002 4024
0xE002 4028
0xE002 402C
0xE002 4030
0xE002 4034
0xE002 4038
0xE002 403C
0xE002 4060
0xE002 4064
0xE002 4068
0xE002 406C
0xE002 4070
0xE002 4074
0xE002 4078
0xE002 407C
0xE002 4080
0xE002 4084
214