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Card-detect info
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VCC is only enabled when the power supply bits of [[CONFIG9_Registers#CFG9_CARDSTATUS|CFG9_CARDSTATUS]] are set to <tt>10</tt>. This is in contrast to the DS and DSi, where the power supply is always available when the console is on.
{| class="wikitable" border="1"
|-
!
! 3DS
! DS and DSi
|-
| VCC
| Only enabled when the power supply bits of [[CONFIG9_Registers#CFG9_CARDSTATUS|CFG9_CARDSTATUS]] are set to <tt>10</tt>
| Always available when card is detected
|-
| Card-detect
| Physical insertion switch, readable through [[CONFIG9_Registers#CFG9_CARDSTATUS|CFG9_CARDSTATUS]] bit 0
| IRQ pin
|-
| Time to first clock pulse
| ~280ms
| ~166ms
|}
===SPI flash===
===SPI flash===