Kontron VMP3 - Manual (Page 80)

Configuration VMP3
Page 4 - 20 © 2005 Kontron Modular Computers GmbH ID 29230, Rev. 01
29230
.01.UG.VC.050727/091437
P R E L I M I N A R Y
4.4 Real-time Clock
Access to the real-time clock (RTC) is effected via the I2C bus. The RTC uses address 0xD0.
For more detailed information please refer to the manuals for the ST - Microelectronics M41T81
and the Motorola MPC8541E (I2C bus).
Table 4-31: Register Map RTC M41T81
ADR
(HEX)
ADDRESS BITS
FUNCTION RANGE IN BCD
FORMAT
D7 D6 D5 D4 D3 D2 D1 D0
00 0.1 Seconds 0.01 Seconds Seconds: 00 - 99
01 ST 10 Seconds Seconds Seconds: 00 - 59
02 0 10 Minutes Minutes Minutes: 00 - 59
03 CEB CB 10 Hours Hours Century:
Hours:
0 - 1
00 - 23
04 0 0 0 0 0 Day Day: 00 - 07
05 0 0 10 Date Date Date: 01 - 31
06 0 0 0 10M. Month Month: 01 - 12
07 10 Years Year Year: 00 - 99
08 OUT FT S Calibration Control:
09 0 BMB4 BMB3 BMB2 BMB1 BMB0 RB1 RB0 Watchdog:
0A AFE SQWE ABE Al 10M Alarm Month Alarm Month: 01 - 12
0B RPT4 RPT5 Al 10 Date Alarm Date Alarm Date: 01 - 31
0C RPT3 HT Al 10 Hour Alarm Hour Al Hour: 00 - 23
0D RPT2 Alarm 10 Minutes Alarm Minutes Al Min: 00 - 59
0E RPT1 Alarm 10 Seconds Alarm Seconds Al Sec: 00 - 59
0F WDF AF 0 0 0 0 0 0 Flags:
10 0 0 0 0 0 0 0 0 Reserved:
11 0 0 0 0 0 0 0 0 Reserved:
12 0 0 0 0 0 0 0 0 Reserved:
13 RS3 RS2 RS1 RS0 0 0 0 0 SQW: