L6460 datasheet(117/139 Pages) STMICROELECTRONICS

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L6460

GPIO pins

Doc ID 17713 Rev 1

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22.10

GPIO[9]

The GPIO[9] truth table is (for the abbreviation list please refer to Table 40).

Table 50.

GPIO[9] truth table

Op1EnPlusPin(1)

The Op1EnPlusPin bit in the OpAmp1Ctrl register enables the connection of the positive input of Op1 to

GPIO[9] pin.

GPIO[9] SPI bits

Function (2)

The GPIO[9] pin is used by the system when firmware requires the ID read action (Chapter 25)

Note

GpioOut

enable[9]

Mode[2]

Mode[1]

Mode[0]

OpAmp1 in+

(3)

When Op1EnPlusPin = ‘1’ the GpioOutEnable[9] bit is forced to 0.

HiZ (SPI_IN)

SPI OUT

(4)

In all configurations in which GPIO[9] is enabled as output:

a)the GPIO[9] 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[9] pin can be always used as a digital input so its value can be always read through SPI

interface (SPI_IN function);

c)please note that GPIO[9] output is directly connected to ExtPWM1 input for Bridge 1 or 2 and therefore

particular care must be taken in order to avoid wrong PWM signals when ExtPWM1 is selected for

bridge 1 or 2;

d)the GPIO[9] pin is a rail to rail output supplied by VGPIO_SPI.

Interrupt Ctrl

(4)

AuxPwm2

(4)

Reg Loop 3

(4)

Interrupt Ctrl inverted

(4)

AuxPwm2 inverted

(4)

Reg Loop 3 inverted

(4)

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