RM0029 Datasheet, PDF (532/1740 Pages) STMicroelectronics – The primary objective of this document

System Integration Unit (SIU)
RM0029
3. When configured as IRQ or GPO, the IBE bit may be set to one to reflect the pin state in the corresponding GPDI register.
Setting the IBE bit to zero reduces power consumption. When configured as GPI, the IBE bit should be set to one.
4. When configured as IRQ, the HYS bit should be set to one.
Figure 306. Pad Configuration Register (SIU_PCR212)
Table 285. SIU_PCR212 PA values
Signal
Name
Module
Description
I/O^(1),(2)
PA value
Primary
ALT1
ALT2
GPIO
BOOTCFG[1]
IRQ[3]
ETRIG3
GPIO[212]
Reset/Config
SIU
SIU
SIU
Selects boot mode
I
External interrupt
I
Triggers eQADC CFIFO3 I
GPIO
I/O
0b001
0b010
0b100
0b000
1. In cases where an I/O function can be either an input or an output, I/O direction is specified using the IBE and OBE bits. Set
IBE = 1 for input or OBE = 1 for output.
2. For I/O functions that change direction dynamically, such as the external data bus, switching between input and output is
handled internally and the IBE and OBE bits are ignored.
Pad Configuration Register 213 (SIU_PCR213)
SIU_BASE+0x1EA
0
1
2
R₀
0
0
W
Reset ₀
0
0
3
4
5
(1)
PA
0
0
1
6
7
8
(3)
OBE IBE
0
(2)
0
1
0
9
10 11
12 13 14 15
0 ODE HYS
SRC
WPE WPS
0
0
1
0
0
1
1
= Unimplemented or Reserved
1. WKPCFG function is only applicable during reset.
2. When configured as GPO, the OBE bit should be set to one.
3. When configured as GPO, the IBE bit may be set to one to reflect the pin state in the corresponding GPDI register. When
configured as GPI, the IBE bit should be set to one.
Figure 307. Pad Configuration Register (SIU_PCR213)
Table 286. SIU_PCR213 PA values
Signal
Name
Module
Description
I/O^(1),(2)
PA value
Primary
ALT1
WKPCFG
NMI
Reset/Config
Reset/Config
Connects eTPU and eMIOS
pins to internal weak pull-up
or weak pull-down devices
I
after reset
Non-Maskable interrupt
I
0b001
0b010
ALT2
GPIO
DSPI_B_SOUT
GPIO[213]
DSPI
SIU
Output
GPIO
O
0b100
I/O
0b000
1. In cases where an I/O function can be either an input or an output, I/O direction is specified using the IBE and OBE bits. Set
IBE = 1 for input or OBE = 1 for output.
2. For I/O functions that change direction dynamically, such as the external data bus, switching between input and output is
handled internally and the IBE and OBE bits are ignored.
532/1740
Doc ID 15177 Rev 8