ST STM32L4R9I User Manual page 54

Connectors
Pin
number
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
54/77
Table 31. Daughterboard extension connector (CN6) (continued)
Description Alternative functions
PA12 USB OTG_DP
PA11 USB OTG_DM
PG8 LPUART1_RX
PA9 VBUS_FS, MC
PC9 SDIO1_D1, Trace_D0
PC7 TS_KEY_CS, MC
PB15 LED1, MC
PB13 LPUART1_CTS
RESET# -
GND -
OpAmp1_VOUT,
PA3
OCTOSPI1_CLK
PA7 OCTOSPI1_IO2
PC4 OCTOSPI1_IO7, MC
PC3 OCTOSPI1_IO6, MC
D5V -
PG11 OCTOSPI1_IO5
PI2 SPI2_MISO
PC8 SDIO1_D0, MC
PC10 SDIO1_D2, Trace_D1
GND -
PC11 SDIO1_D3
PC12 SDIO1_CLK
PA10 USB OTG_ID
PC6 TS_KEY, MC
PG7 LPUART1_TX
DSI LCD_BL_CTRL,
PB14
PMOD_RST, MC
PB12 LPUART1_RTS
DSI LCD_TE,
PF11
TFT LCD_DE
PB0 OCTOSPI1_IO1
GND -
PB1 OCTOSPI1_IO0
PB2 OCTOSPI1_DQS
How to disconnect alternative functions to
use on the extension connector
No connection for CN3
No connection for CN3
U9 removed
R203 and SB35 OFF
R205 and SB57 OFF
R46 ON, SB19 and SB20 OFF
R187 and SB51 OFF
U9 removed
-
-
R221 and R215 OFF
U6 removed
R75 and SB55 OFF
R67 and SB54 OFF
-
U6 removed
No connection for CN16 and P1
R195 and SB2 OFF
R197 and SB58 OFF
-
R60 OFF and no SD card inserted
No SD card inserted
No connection for CN3
R44 ON, SB21 OFF
R19 OFF and U1 removed
R207 and SB41 OFF and no connection for P1
R5 OFF and U1 removed
No connection for CN16 and CN20
U6 removed
-
U6 removed
U6 removed
UM2248 Rev 5
UM2248