SABRE-LL-I datasheet(28/141 Pages) STMICROELECTRONICS

номер детали	SABRE-LL-I

подробное описание детали	Combo motor driver

PDF	141 Pages

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производитель	STMICROELECTRONICS [STMicroelectronics]

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Start-up configurations

SABRE-LL-I

28/141

8.3

Basic device mode

The basic device mode is selected by leaving the GPIO[0] pin floating. In this mode

S.A.B.Re doesn’t use GPIO[3] and GPIO[4] as configuration pins, leaving them free for

other uses.

When in this mode the regulators included in the start up sequence (except VMAIN_SW) are

considered as system regulators and they start in the following sequence:

Auxiliary switching regulator1 (VAUX1_SW).

Auxiliary switching regulator2 (VAUX2_SW).

Main linear regulator (VMAIN_LIN).

Main switching regulator (VMAIN_SW) (Not system regulator).

Table 15.

Start-up correspondence

Pin state(1)

“X” means “don’t care”.

Major mode

Minor mode(2)

The description of these modes is in the following paragraph 9.7.

GPIO[0]

GPIO[3]

GPIO[4]

Basic

000

Single

Bridge

Primary regulator

001

Regulators

Simple regulator

Bridge + VEXT

Secondary Regulators

010

Master

Bridge

Primary regulator

011

Regulators

Simple regulator

Bridge + VEXT

Secondary Regulators

Slave

Bridge

Primary regulator

Regulators

Simple regulator

Bridge + VEXT

Secondary Regulators.

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