Datasheet

L6460 GPIO pins
Doc ID 17713 Rev 1 117/139
22.10 GPIO[9]
The GPIO[9] truth table is (for the abbreviation list please refer to Tabl e 4 0).
Table 50. GPIO[9] truth table
Op1EnPlusPin
(1)
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)
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]
1XXXXOpAmp1 in+
(3)
3. When Op1EnPlusPin = ‘1’ the GpioOutEnable[9] bit is forced to 0.
0 0 X X X HiZ (SPI_IN)
0 1 0 0 0 SPI OUT
(4)
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 V
GPIO_SPI.
0 1 0 0 1 Interrupt Ctrl
(4)
01010AuxPwm2
(4)
0 1 0 1 1 Reg Loop 3
(4)
0 1 1 0 0 Interrupt Ctrl inverted
(4)
0 1 1 0 1 AuxPwm2 inverted
(4)
0 1 1 1 1 Reg Loop 3 inverted
(4)