Quectel QuecOpen AG525R-GL Hardware Design page 54

USB_DM 87
USB_SS_TX_P 93
USB_SS_TX_M 91
USB_SS_RX_P 90
USB_SS_RX_M 88
It is recommended to reserve USB 2.0 for firmware upgrade in application design, and reserve test points
for debugging purpose. The following are the reference circuits of USB 3.0 and 2.0 interfaces.
USB_VBUS
USB_SS_TX_P
USB_SS_TX_M
USB_SS_RX_P
USB_SS_RX_M
Module
AG525R-GL_QuecOpen_Hardware_Design
AI/AO USB differential data bus (-)
AO USB 3.0 super-speed transmit (+)
AO USB 3.0 super-speed transmit (-)
AI USB 3.0 super-speed receive (+)
AI USB 3.0 super-speed receive (-)
Figure 20: Reference Circuit of USB 2.0 Application
USB_VBUS
C1
100 nF
C2
100 nF
Figure 21: Reference Circuit of USB 3.0 Application
Automotive Module Series
AG525R-GL QuecOpen Hardware Design
standard specification.
Require differential
impedance of 90 Ω.
Compliant with USB 3.0
standard specification.
Require differential
impedance of 90 Ω.
USB_SS_RX_P
USB_SS_RX_M
C3
100 nF
USB_SS_TX_P
C4
100 nF
USB_SS_TX_M
AP
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