7.1.4
CN8 USB 2.0 FS board to board connector
The CN8 male connector is used to connect the mother board USB 2.0 FS data interface (DP/DM) to the USB
Type-C
®
daughterboard connectors.
•
If the user wants to connect MCU USB D+/D- to MB1352_CN7 connector (USB Type-C
®
port 1), then he
must fit SB5 and SB6, and remove SB39 and SB38 on MB1581 (default configuration).
•
If the user wants to connect MCU USB D+/D- to MB1352_CN5 connector (USB Type-C
®
sink port 2), then
he must fit SB39 and SB38, and remove SB5 and SB6 on MB1581.
Table 25.
CN8 USB 2.0 FS board to board connector
Pin
Signal
Mother board function
UCPD daughterboard
function
(MB1352_CN10)
How to disconnect
with function block
on mother board
1
PA12
USART1_RTS
C1_D+
Keep JP3 OFF
2
PA11
USART1_CTS_3V3
C1_D-
Keep JP4 OFF
3
PA12
USART1_RTS
C2_D+
Keep JP3 OFF
4
PA11
USART1_CTS_3V3
C2_D-
Keep JP4 OFF
7.1.5
CN5 ST-LINK/V2-1 USB Micro-B connector
The CN5 USB Micro-B connector is used to connect embedded ST-LINK/V2-1 to the PC for debugging of the
board.
Figure 12.
CN5 USB Micro-B connector (Front view)
Table 26.
CN5 USB Micro-B connector pinout
Pin number
Description
Pin number
Description
1
V
BUS
(power)
4
ID
2
DM
5
GND
3
DP
-
-
7.1.6
CN6 ST-LINK/V2-1 programming connector
The CN6 connector is only used for embedded ST-LINK/V2-1 programming during board manufacturing. It is not
populated by default and not for the end-user.
UM2783
Connectors on mother board (MB1581)
UM2783
-
Rev 1
page 30/59
