4.11.1. Onboard I/O control

GPIO2 is dedicated to the USB, push button, and MCI status signals as listed in Table 4.45.

Table 4.45. GPIO2 and MCI status signals

GPIO2 bitDescription
[4]USB HC suspend and wakeup control
[3]USB suspend and wakeup control
[2]General-Purpose push button
[1]MCI Write-protect status
[0]MCI Card-present status

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