L6460 datasheet(103/139 Pages) STMICROELECTRONICS

103 / 139 page

L6460

GPIO pins

Doc ID 17713 Rev 1

103/139

22.3

GPIO[2]

The GPIO[2] truth table is (for the abbreviation list please refer to Table 40).

Table 43.

GPIO[2] truth table

AUX2Enable

AUX2System

GPIO[1] SPI BITS

Function

Note

GpioOut

Enable [1]

Mode[2]

Mode[1]

Mode[0]

XXX

AUX2 FB

(1)

AUX2Enable or AUX2System bit =1 represent the case in which AUX1 is used as a System or Not System

regulator.

HiZ (SPI_IN)

Comp1 IN -

(2)

In all configurations in which GPIO[2] is enabled as output:

a) the GPIO[2] pin can be always used as an analog input to the ADC system (ADC function) by writing

its address in the A2DChannelX[4:0] in the A2DConfigX register and starting a conversion;

b) the GPIO[2] pin can be always used as a digital input so its value can be always read through SPI

interface (SPI_IN function);

please note that GPIO[2] output is directly connected to ExtPWM3 input for Bridge 3 or 4 and therefore

particular care must be taken in order to avoid wrong PWM signals when ExtPWM3 is selected for

bridge 3 or 4;

d) the GPIO[2] pin is an open drain output.

SPI OUT

(2)

AuxPwm2

(2)

AuxPwm3

(2)

InterruptCtrl

(2)

SPI OUT inverted

(2)

AuxPwm2 inverted

(2)

AuxPwm3 inverted

(2)

IntCtrlinverted

(2)

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