Usb Host - Mikroe EasyMx PRO v7a Manual

USB HOST

communication
USB is the acronym for Universal Serial Bus. This is a very popular industry standard
that defines cables, connectors and protocols used for communication and power
supply between computers and other devices. EasyMx PRO v7a for contains USB HOST
connector (CN24) for USB Standard Type C plug, which enables microcontrollers that
support USB communication to establish a connection with the target device (eg. USB
Keyboard, USB Mouse, etc). USB host also provides the necessary 5V power supply to the
target via TPS2041B IC. Detection whether USB device is connected to HOST connector
can be done through VBUS line. Connection of USB HOST VBUS line and PA9 pin is
established when SW10.7 is on.
DATA BUS
VCC-3.3V
VCC-5V
R36
10K
U5
USB-PSW 4
EN OC
GND
5
IN OUT
TPS2041B
D1
BAT43
PA9
PA10 USB-VBUS
SW12
VCC-3.3V VCC-5V
R31 R32
4K7 2K2
R34
47K
LD71 LD72
OC ON
3
2
1
R90
E9 E10
10uF 10uF
56k
Q2
BC846
R91
R40 R41
56k
USB-D_P
100 10K
USB-D_N
CN24 USB TYPE-C
VBUS4
A4B9
VBUS
A1B12
GND
A5
CC1
A6
DP1
A7
DN1
A8
SBU1
B5
CC2
B6
DP2
B7
DN2
B8
SBU2
B4A9
VBUS
B1A12
GND
Powering USB device
CN24
You can enable or disable power
1
supply to USB device connected to
2
HOST, through microcontroller PA10
3
4
pin. In order to connect EN TPS2041B
USB A
IC pin to microcontroller, you must
push SW10.8 to ON position.
E a s y M x P R O v 7 a U s e r M a n u a l