General-purpose and alternate-function I/Os (GPIOs and AFIOs)
RM0008
Table 48.
SPI3 remapping
Alternate function
SPI3_NSS
SPI3_SCK
SPI3_MISO
SPI3_MOSI
SPI3_REMAP = 0
PA15
PB3
PB4
PB5
SPI3_REMAP = 1
PA4
PC10
PC11
PC12
8.3.12
Ethernet alternate function remapping
Refer to AF remap and debug I/O configuration register (AFIO_MAPR) . Ethernet is available
only in connectivity line devices.
Table 49.
ETH remapping
8.4
Alternate function
RX_DV-CRS_DV
RXD0
RXD1
RXD2
RXD3
AFIO registers
ETH_REMAP = 0
PA7
PC4
PC5
PB0
PB1
ETH_REMAP = 1
PD8
PD9
PD10
PD11
PD12
Refer to Section 1.1 on page 37 for a list of abbreviations used in register descriptions.
Note:
8.4.1
To read/write the AFIO_EVCR,AFIO_MAPR and AFIO_EXTICRX registers, the AFIO clock
should first be enabled. Refer to Section 6.3.7: APB2 peripheral clock enable register
Event control register (AFIO_EVCR)
Address offset: 0x00
Reset value: 0x0000 0000
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Reserved
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reserved
EVOE
PORT[2:0]
PIN[3:0]
rw
rw
rw
rw
rw
rw
rw
rw
Bits 31:8 Reserved
Bit 7 EVOE: Event output enable
Set and cleared by software. When set the EVENTOUT Cortex output is connected to the
I/O selected by the PORT[2:0] and PIN[3:0] bits.
158/995
Doc ID 13902 Rev 9
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