RM0367 Rev 7 263/1043
RM0367 System configuration controller (SYSCFG)
264
10.2.7 SYSCFG external interrupt configuration register 4
(SYSCFG_EXTICR4)
Address offset: 0x14
Reset value: 0x0000
10.2.8 SYSCFG register map
The following table gives the SYSCFG register map and the reset values.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Reserved
1514131211109876543210
EXTI15[3:0] EXTI14[3:0] EXTI13[3:0] EXTI12[3:0]
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
Bits 31:16 Reserved
Bits 15:0 EXTIx[3:0]: EXTI x configuration (x = 12 to 15)
These bits are written by software to select the source input for the EXTIx external interrupt.
0000: PA[x] pin
0001: PB[x] pin
0010: PC[x] pin
0011: PD[x] pin
0100: PE[x] pin
Other configurations are reserved.
Table 49. SYSCFG register map and reset values
Offset Register
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x00
SYSCFG_CFGR1
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
BOOT_MODE
Res.
Res.
Res.
Res.
UFB.
Res.
MEM_MODE
Reset value xx x xx
0x04 SYSCFG_CFGR2
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
I2C3_FMP
I2C2_FMP
I2C1_FMP
I2C_PB9_FMP
I2C_PB8_FMP
I2C_PB7_FMP
I2C_PB6_FMP
Res.
Res.
CAPA[4:0]
FWDISEN
Reset value 0000000 000001
0x08
SYSCFG_
EXTICR1
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
EXTI3[3:0] EXTI2[3:0] EXTI1[3:0] EXTI0[3:0]
Reset value 0000000000000000
0x0C
SYSCFG_
EXTICR2
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
EXTI7[3:0] EXTI6[3:0] EXTI5[3:0] EXTI4[3:0]
Reset value 0000000000000000
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