Table 12-4. Mr Register; Table 12-5. Mr Fields; Table 12-6. Lr Register; Table 12-7. Lr Fields - Sharp LH79524 User Manual

Real Time Clock

12.2.2.2 Match Register (MR)

MR is the Match Register. Program the value at which the RTC Interrupt will be generated
into this register. The difference between this value and the value in the Load Register is
the time in seconds, between count initiation and interrupt generation. The current setting
can be read.
BIT
FIELD
RESET
RW
BIT
FIELD
RESET
RW
ADDR
BIT
31:0
12.2.2.3 Load Register (LR)
LR is the Load Register. Program this register with the value from which to initiate the
count sequence. The count begins on the next rising edge of the 1 Hz clock. Note that
counting may not begin for up to one second.
Reading this register returns the last value written.
BIT
FIELD
RESET
RW
BIT
FIELD
RESET
RW
ADDR
BIT
31:0
12-4
31 30 29 28 27
0 0 0 0 0
RW RW RW RW RW
15 14 13 12 11
0 0 0 0 0
RW RW RW RW RW
NAME
RTCMR RTC Match Register Contains the match value in hexadecimal.
31 30 29 28 27
0 0 0 0 0
RW RW RW RW RW
15 14 13 12 11
0 0 0 0 0
RW RW RW RW RW
NAME
RTCLR RTC Load Register Hexadecimal start count value

Table 12-4. MR Register

26 25 24 23
RTCMR
0 0 0 0
RW RW RW RW
10 9 8 7
RTCMR
0 0 0 0
RW RW RW RW
0xFFFE0000 + 0x04

Table 12-5. MR Fields

DESCRIPTION

Table 12-6. LR Register

26 25 24 23
RTCLR
0 0 0 0
RW RW RW RW
10 9 8 7
RTCLR
0 0 0 0
RW RW RW RW
0xFFFE0000 + 0x08

Table 12-7. LR Fields

DESCRIPTION
Version 1.0
LH79524/LH79525 User's Guide
22 21 20 19 18
0 0 0 0 0
RW RW RW RW RW
6 5 4 3 2
0 0 0 0 0
RW RW RW RW RW
22 21 20 19 18
0 0 0 0 0
RW RW RW RW RW
6 5 4 3 2
0 0 0 0 0
RW RW RW RW RW
17 16
0 0
RW RW
1 0
0 0
RW RW
17 16
0 0
RW RW
1 0
0 0
RW RW