Artesyn PmPPC440, Руководство пользователя

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Clock Operation 4-3
10003794-05
Table 4-1. RTC Register Map
Address Data Function/Range
D7 D6 D5 D4 D3 D2 D1 D0 BCD Format
00 ST 10 Seconds Seconds Seconds 00–59
01 X 10 Minutes Minutes Minutes 00–59
02 CEB CB 10 Hours Hours Century/Hours 0-1/00-23
03 X X X X X Day Day 01–07
04 X X 10 Date Date Date 01–31
05 X X X 10 M Month Month 01–12
06 10 Years Years Years 00–99
07 OUT FT S Calibration Control –
ST Stop bit.
1=Stops the oscillator
0=Restarts the oscillator within one second
CEB Century Enable Bit.
1=Causes CB to toggle either from 0 to 1 or from 1 to 0 at the turn of the
century
0=CB will not toggle
CB Century Bit.
Day Day of the week.
Date Day of the month.
OUT Output level.
1=Default at initial power-up
0=FT/OUT (pin 7) driven low when FT is also zero
FT Frequency Test bit.
1=When oscillator is running at 32,768 Hz, the FT/OUT pin will toggle at
512 Hz
0=The FT/OUT pin is an output driver (default at initial power-up)
S Sign bit.
1=Positive calibration
0=Negative calibration