SABRE-LL-I datasheet(95/141 Pages) STMICROELECTRONICS

95 / 141 page

SABRE-LL-I

GPIO pins

95/141

GPIO[13]

- ADC input

- OpAmp2 in-

- SPI IN

- SPI OUT

- AuxPwm1

- Reg. loop 3

- AuxPwm3

Full driver

connected to

VGPIO_SPI

GPIO[14] - ADC input

- SPI IN

- OpAmp2 Out

- SPI OUT

- Interrupt ctrl.

- AuxPwm2

- AuxPwm3

Full driver

connected to

VGPIO_SPI

In the above table the following abbreviations were used.

Gpio[8] input Schmitt trigger is disabled by default (after a reset) to be able to read the digital value from this pin it needs to

be enabled writing a logic ‘1’ in the EnGpio8DigIn in CurrDacCtrl register.

Table 67.

GPIO functions description (continued)

Name

Function(1)

Notes

Input

Output

Special

Analog

Digital

Analog

Digital

Table 68.

Abbreviations

Abbreviation

Meaning

ADC input

Input to the ADC system.

SPI IN

Digital state of this pin is readable through SPI.

SPI OUT

Digital state of this pin can be set through SPI.

Back to back high side driver.

Comp1 IN -

This pin can be used as minus input for comparator 1.

Comp2 IN -

This pin can be used as minus input for comparator 2.

Vaux1 FB

This pin can be used as feedback input for AUX1 regulator obtained by

using bridge 3.

A2DGpo

This pin can be used to carry out the A2DGpo value related to the ADC

conversion S.A.B.Re is doing.

Reg. Loop 3

This pin can be used as output of the regulation loop used by AUX3

regulator obtained by using bridge 4.

STEP_REQ

This pin can be used to request a stepper sequencer evolution step.

Interrupt Ctrl

This pin can be used to carry out the interrupt controller circuit output.

Vaux2 FB

This pin can be used as feedback pin by AUX2 regulator obtained by

using bridge 3

IN PWM

This pin can be used to provide an external PWM to bridges.

Reg. Loop 1

This pin can be used as output of the regulation loop used by AUX1

regulator.

Comp1 OUT

This pin can be used as output of the comparator 1.

AuxPwm1

This pin can be used to carry out the PWM generated by AuxPwm1 circuit.

Low Volt. Pow. Sw. 1

This pin can be used as output of low voltage power switch 1.

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