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1.12 Reserved pins (RSVD)
LEXI-R422 modules have pins reserved for future use, marked as RSVD, which can all be left
unconnected on the application board, except for the RSVD #99 (J5) pin which is recommended to be
externally accessible by connecting it to a dedicated Test-Point.
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It is highly recommended to provide an accessible test point directly connected to the RSVD #99
(J5) pin for diagnostic purposes. It is also highly recommended to provide access to the V_INT,
PWR_CTRL, USB_5V0, USB_3V3, USB_D+, USB_D- pins for FW update and/or for diagnostic
purposes using accessible dedicated Test-Points that are directly connected to each of these pins,
or using a dedicated connector / circuit.
UBX-23007449 - R02
C1-Public
LEXI-R422 - System integration manual
System description
Page 31 of 108
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