L9952GXP datasheet(56/68 Pages) STMICROELECTRONICS

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SPI control and status registers

L9952GXP

56/68

Doc ID 13518 Rev 5

8.1.2

Control register 1

While writing to the control register 1, the status register 1 can be read at the DO-Output of

the SPI.

Voltage regulator 2 is ON in ACTIVE mode;

OFF in V1-standby, VBat-standby

Voltage regulator 2 is ON in ACTIVE mode and V1 standby;

OFF in Vbat-standby

Voltage regulator 2 is ON in all modes

Table 41.

Configuration bit TRIG, GO_VBAT, GO_V1

TRIG

Trigger bit for watchdog; inverted for each Trigger event invert this bit for a

proper watchdog trigger.

GO_VBAT

”1” enters the Vbat-standby mode. (dominant mode, if both standby modes

are selected)

GO_V1

“1” enters the V1-standby mode.

Table 40.

Configuration bit On_V2x (continued)

Name / state

Definition/ function

Table 42.

Control register 1

Cyclic Timer 1/2

Loop

Pull up

Wakeup Sources

Bit

Access

Reset

Name

CLR

INT_EN

T20

T13

T12

T11

T10

Table 43.

Configuration bit Wx

Name/state

Definition/function

W0 Disables the corresponding wake up sources

Input WU1 is disabled as wake up source

Input WU2 is disabled as wake up source

Input WU3 is disabled as wake up source

Input WU4 is disabled as wake up source

Open load Appearance / Disappearance at OUT1 is

disabled as wake up source

Open load Appearance / Disappearance at OUT2 is

disabled as wake up source

Open load Appearance / Disappearance at OUT3 is

disabled as wake up source

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