ADLINK Technology Q7-BASE, Technical Reference, Page: 24 / 52

18 Hardware
Note: Shaded table cells denote power or ground.
2.2.4 Battery Socket
One vertical, AAA battery socket provides power for an external RTC coin cell battery.
Figure 2-9 illustrates the top and side views of the socket. Table 2-3 provides the signals for
socket.
Figure 2-9: Battery Socket
Note: Shaded table cells denote power or ground. Jumper required on CN46 to enable the RTC.
Table 2-2: SD Card Slot (CN100)
Pin # Signal Description Scheme
1 SDIO_D3 SDIO data bit3
2 SDIO_CMD SDIO Command
3 GND Ground
4 +VCC_SDIO 3.3V power supply
5 SDIO_CK SDIO clock
6 GND Ground
7 SDIO_D0 SDIO data bit0
8 SDIO_D1 SDIO data bit1
9 SDIO_D2 SDIO data bit2
10 SDIO_CD# SDIO card detect
11 GND Ground
12 SDIO_WP SDIO write protect
Table 2-3: Battery Socket (BT1)
Pin # Signal Description
1 3V_BAT +3 volts power for RTC
2 GND Ground
3 3V_BAT +3 volts power for RTC
A CR2032 battery may explode if incorrectly
installed. Replace only with the same or equiva-
lent type recommended by the socket manufac-
turer.