Fujitsu MB91150 Series, Hardware Manual, Page: 422 / 512

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CHAPTER 20 CALENDAR MACROS
20.1 Overview of Calendar Macros
The calendar macros use a basic clock frequency of 32.768 kHz.
These macros have clock functions for years, months, days, hours, minutes, seconds,
days of the week, and leap years.
For the year, the lower 2 digits of the year, 0 to 99, are counted.
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Block diagram of calendar macros
Figure 20.1-1 "Block diagram of calendar macros" is a block diagram that applies to each
calendar macro.
Figure 20.1-1 Block diagram of calendar macros
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Registers of calendar macros
Figure 20.1-2 "Calendar macro registers" lists the calendar macro registers.
Figure 20.1-2 Calendar macro registers
Oscillator
Calendar circuit
32KHz
Bus
control
D-bus
Address 000210
H
D7 - - D4 D3 D2 D1 D0 CAC register
Address 000211
H
- - D5 D4 D3 D2 D1 D0 CA1 register
Address 000212
H
- - D5 D4 D3 D2 D1 D0 CA2 register
Address 000213
H
- - - D4 D3 D2 D1 D0 CA3 register
Address 000214
H
- - - D4 D3 D2 D1 D0 CA4 register
Address 000215
H
- - - - - D2 D1 D0 CA5 register
Address 000216
H
- - - - D3 D2 D1 D0 CA6 register
Address 000217
H
- D6 D5 D4 D3 D2 D1 D0 CA7 register
Address 00021F
H
D7 - - - - - D0 CAS register