miriac MPX-S32G274A User Manual
V2.1
29/76
© MicroSys Electronics GmbH 2020
4.9
GPIO Expander
The scope of f unctions on the S32G274A is extended by a GPIO expander
FXL6408:
■
I²C clock f requency up to 400 kHz
■
Slave address according to Table 28
■
One interrupt out signaling pin state changes
It has 8 GPIOs which are used as f ollows:
GPIO Expander
Pin
Signal
Pin
Signal
Signal
conditioning
12
GPIO0
←
J19
6
THERM_ALERT#
PU: 10k
11
GPIO1
←
J19
4
THERM_FAULT#
PU: 10k
8
GPIO2
←
J21
9
RTC_IRQA#
PU: 10k
7
GPIO3
←
J21
4
RTC_IRQB#
PU: 10k
6
GPIO4
←
LD4
USER_LED
PU: 10k
5
GPIO5
←
---
---
HW_REV2
See
4
GPIO6
←
---
---
HW_REV1
3
GPIO7
←
---
---
HW_REV0
Table 20 GPIO Expander: Pin description
HW_REV2
HW_REV1
HW_REV0
Description
0
0
0
Hardware Revision 1
0
0
1
Hardware Revision 2
0
1
0
Hardware Revision 3
0
1
1
Hardware Revision 4
1
0
0
Hardware Revision 5
1
0
1
Hardware Revision 6
1
1
0
Hardware Revision 7
1
1
1
Hardware Revision 8
Table 21 GPIO Expander: Hardware Revision
S32G274A
GPIO Expander
Ball
Signal
Pin
Signal
Signal conditioning
Y7
PC13
←
1
EXPD_IRQ#
PU: 10k
Table 22 GPIO Expander: IRQ
