Automotive Module Series
AG525R-GL QuecOpen
Hardware Design
AG525R-GL_QuecOpen_Hardware_Design 53 / 104
USB_DM 87 AI/AO USB differential data bus (-)
standard specification.
Require differential
impedance of 90 Ω.
USB_SS_TX_P 93 AO USB 3.0 super-speed transmit (+)
Compliant with USB 3.0
standard specification.
Require differential
impedance of 90 Ω.
USB_SS_TX_M 91 AO USB 3.0 super-speed transmit (-)
USB_SS_RX_P 90 AI USB 3.0 super-speed receive (+)
USB_SS_RX_M 88 AI USB 3.0 super-speed receive (-)
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.
Figure 20: Reference Circuit of USB 2.0 Application
C1
100 nF
C2
100 nF
C3
100 nF
C4
100 nF
USB_VBUS
Module
USB_SS_TX_P
USB_VBUS
USB_SS_TX_M
USB_SS_RX_P
USB_SS_RX_M
USB_SS_RX_P
USB_SS_RX_M
USB_SS_TX_P
USB_SS_TX_M
AP
Figure 21: Reference Circuit of USB 3.0 Application
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