Rainbow-electronics AT73C246 Bedienungsanleitung PDF herunterladen (Seite 40)

11050A–PMAAC–07-Apr-10

AT73C246

11.10 Real Time Clock (RTC) User Interface

Figure 11-10. RTC Block Diagram

Note: 1. Values in the Version Register vary with the version of the IP block implementation.

RTC ADDR

RTC DATA 3 RTC DATA 2 RTC DATA 1 RTC DATA 0

CONTROL REGISTER

STAT US CLEAR COMMAND REGISTER

MODE REGISTER

TIME REGISTER

CALENDAR REGISTER

TIME ALARM REGISTER

CALENDAR ALARM REGISTER

STAT US REGISTER

INTERRUPT ENABLE REGISTER

INTERRUPT DISABLE REGISTER

INTERRUPT MASK REGISTER

VALID ENTRY REGISTER

VERSION REGISTER

RESERVED REGISTER

RTC

CTRL

RTC_SEL

RTC_EN

RTC_WRITE

RTC

Table 11-9. Register Mapping

Offset Register Name Access Reset

0x00 Control Register RTC_CR Read-write 0x0

0x04 Mode Register RTC_MR Read-write 0x0

0x0C Calendar Register RTC_CALR Read-write 0x01819819

0x10 Time Alarm Register RTC_TIMALR Read-write 0x0

0x14 Calendar Alarm Register RTC_CALALR Read-write 0x01010000

0x18 Status Register RTC_SR Read-only 0x0

0x1C Status Clear Command Register RTC_SCCR Write-only ---

0x20 Interrupt Enable Register RTC_IER Write-only ---

0x24 Interrupt Disable Register RTC_IDR Write-only ---

0x28 Interrupt Mask Register RTC_IMR Read-only 0x0

0x2C Valid Entry Register RTC_VER Read-only 0x0

0xFC Version Register

(1)

RTC_VERSION Read-only ---

0xFC Reserved Register --- --- ---

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 158 159

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