Hardware Documentation efus™A9X+ efus™A9Xr2
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4
Interfaces
4.1 USB host
The 90 Ohm differential pair of USB signals doesn't need any termination. For external ports
ESD and EMV protection is required nearby the USB connector.
212
USB_A_PWRON
High active USB port power on signal
214
USB_A_N
Differential USB Signal
216
USB_A_P
4.2 USB device
The 90 Ohm differential pair of USB signals don't need any termination. For external ports ESD
and EMV protection is required nearby the USB connector.
217
USB_DEV_VBUS
4.6 … 5.2V does detect connected USB device
Connect with pin 1 on USB device connector
219
USB_DEV_PWR_ONn
Low active USB port power on signal
Used in OTG mode only
221
USB_DEV_OC
Overcurrent Input signal
223
USB_DEV_ID
OTG ID signal input
225
USB_DEV_N
Differential USB Signal
227
USB_DEV_P
4.3 CAN Bus
The chip does provide the CAN bus transmit and receive TTL signal without any termination.
Needs a interface chip to the CAN bus. If not used, please left signals unconnected.
29
CAN_A_TX
CAN port A TX out
31
CAN_A_RX
CAN port A RX in
35
CAN_B_TX
CAN port B TX out
37
CAN_B_RX
CAN port B RX in
