STMicroelectronics FlexSPIN: SPI configurable stepper and DC multi motor driver evaluation board EVAL6460 EVAL6460 Data Sheet
Product codes
EVAL6460
L6460
GPIO pins
Doc ID 17713 Rev 1
121/139
22.12 GPIO[11]
The GPIO[11] truth table is (for the abbreviation list please refer to
Table 52.
GPIO[11] truth table
EnOpl
(1)
1.
The EnOp1 bit in the OpAmp1Ctrl register enables the operational amplifier 1.
GPIO[11] SPI bits
Function
Note
GpioOut
enable[11]
Mode[2]
Mode[1]
Mode[0]
1
X
X
X
X
OpAmp1 Out
(2)
2.
When EnOp1 = ‘1’ the GpioOutEnable[11] bit is forced to 0.
0
0
X
X
X
HiZ (SPI_IN)
0
1
0
0
0
SPI OUT
(3)
3.
In all configurations in which GPIO[11] is enabled as output:
a) the GPIO[11] 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[11] 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[11] output is directly connected to ExtPWM4 input for bridge 3 or 4 and
therefore particular care must be taken in order to avoid wrong PWM signals when ExtPWM4 is
selected for bridge 3 or 4;
therefore particular care must be taken in order to avoid wrong PWM signals when ExtPWM4 is
selected for bridge 3 or 4;
d) the GPIO[11] pin is a rail to rail output supplied by V
GPIO_SPI.
0
1
0
0
1
A2DGpo
0
1
0
1
0
AuxPwm1
0
1
0
1
1
AuxPwm2
0
1
1
0
0
SPI OUT inverted
0
1
1
0
1
A2DGpo inverted
0
1
1
1
0
AuxPwm1 inverted
0
1
1
1
1
AuxPwm2 inverted