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design.
2.
The Schottky diode in the above figure is used for anti-backflow, which will affect the VBUS output
power supply capability. If there is a high requirement for power supply capability, it is
recommended to choose a power chip that supports anti-backflow.
4.1.2. USB Type-A Interface
The reference design of USB Type-A interface realized by USB0 is shown below:
VIN
C1
HOST_PWR_EN
USB0_VBUS
USB0_DM
USB0_DP
USB0_SS_TX_P
USB0_SS_TX_M
USB0_SS_RX_P
USB0_SS_RX_M
Module
.
NOTE
1.
USB Type-C design requires an external CC logic chip and an SS channel switch. For details, see
document [3].
2.
The Type-A design of USB1, USB2, and USB3 interfaces can refer to the above figure. It should be
noted that the module does not have corresponding VBUS and USB_ID. For external VBUS 5 V
output enable control pin, you can choose HOST_PWR_EN, or choose other GPIO.
SG368Z_Series_Hardware_Design
VIN
POWER IC
EN
R1
10K
10K
R2
C4
100 nF
C5
100 nF
R3
C3
15K
100 nF
Figure 9: Reference Design of USB Type-A Interface
Schottky
5V_OUT
C2
0R
R4
R5
0R
Smart Module Series
1
VBUS
2
USB_DM
3
USB_DP
9
SS_TX_P
8
SS_TX_M
6
SS_RX_P
5
SS_RX_M
Type-A
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