SWCS049C datasheet(73/144 Pages) TI

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TPS65911

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SWCS049S – JUNE 2010 – REVISED AUGUST 2018

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Detailed Description

Table 6-20. RTC_CTRL_REG

Address Offset

0x10

Instance

Reset Domain: FULL RESET

Description

RTC control register:

NOTES: A dummy read of this register is necessary before each I2C read in order to update the ROUND_30S bit

value.

Type

RTC_V_OPT

GET_TIME

SET_32_

COUNTER

TEST_MODE

MODE_12_24

AUTO_COMP

ROUND_30S

STOP_RTC

Bits

Field Name

Description

Type

Reset

RTC_V_OPT

RTC date/time register selection:

0: Read access directly to dynamic registers (SECONDS_REG,

MINUTES_REG, HOURS_REG, DAYS_REG, MONTHS_REG,

YEAR_REG, WEEKS_REG)

1: Read access to static shadowed registers: (see GET_TIME bit).

GET_TIME

When writing a 1 into this register, the content of the dynamic registers

(SECONDS_REG, MINUTES_REG, HOURS_REG, DAYS_REG,

MONTHS_REG, YEAR_REG and WEEKS_REG) is transferred into

static shadowed registers. Each update of the shadowed registers needs

to be done by re-asserting GET_TIME bit to 1 (that is: reset it to 0 and

then rewrite it to 1)

SET_32_COUNTER

0: No action

1: set the 32-kHz counter with COMP_REG value.

It must only be used when the RTC is frozen.

TEST_MODE

0: functional mode

1: test mode (Auto compensation is enable when the 32-kHz counter

reaches at its end)

MODE_12_24

0: 24 hours mode

1: 12 hours mode (PM-AM mode)

It is possible to switch between the two modes at any time without

disturbed the RTC, read or write are always performed with the current

mode.

AUTO_COMP

0: No auto compensation

1: Auto compensation enabled

ROUND_30S

0: No update

1: When a one is written, the time is rounded to the nearest minute.

This bit is a toggle bit, the microcontroller can only write one and RTC

clears it. If the microcontroller sets the ROUND_30S bit and then reads

it, the microcontroller will read one until rounded to the nearest value.

STOP_RTC

0: RTC is frozen

1: RTC is running

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