NuMaker-HMI-MA35D1-S1
Nov. 2, 2022
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Rev 1.01
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3.2.7
SD Card Slot
SD0 Standard-SD Card Slot (CON4): Support SD0 (SD2.0) for optional booting source.
Pin No.
Pin Name
GPIO pin of MA35D1
Default Connected R#
1
SD0_DTA3
PC5
R39
2
SD0_CMD
PC0
R34
3
VSS
-
-
4
VDD3V3
-
-
5
SD0_CLK
PC1
R35
6
VSS
-
-
7
SD0_DAT0
PC2
R36
8
SD0_DAT1
PC3
R37
9
SD0_DTA2
PC4
R38
10
SD0_nCD
PC6
R40
11
SD0_WP
PC7
R41
12
VSS
-
-
13
HOLD
-
-
14
HOLD
-
-
15*
1
SD0_PWR_CTRL#
PD14
R42*
2
Note
*
1
: This pin does not belong to the SD0 Standard-SD card slot.
Note
*
2
: Optional GPIO PD14 can control the power of SD0 Standard-SD card slot, but this function
is disabled (R42 is NC, No Connection) by default, the power of SD0 Standard-SD card slot is always
ON.
Table 3-13 SD0 Standard-SD Card Slot (CON4) Pin Function
3.2.8
HS USB2.0 Connectors
HSUSB0 Host/Device (CON5, USB Micro-AB Receptacle): HSUSB0 can act as an USB Host or
Device that depends on the ID pin state of plugged-in USB cable or always acts as Host by shorting
with a 0-ohm resistor on the R89 (NC by default) to force the ID pin of HSUSB0 at low state.
HSUSB1 Host (CON6, USB Type-A Receptacle): HSUSB1 for USB Host with type-A connector.
USB0_ID Resistor (R89): Optional to pull-down the ID pin of HSUSB0 by mounting a resistor (R89)
to force HSUSB0 to always act as an USB Host.
3.2.9
Power-on Setting
Power-on Setting DIP Switch (SW4): The GPIO PG0, PG1, PG2, PG3, PG4, PG5, PG6 and PG7
determine how to boot the evaluation environment on the NuMaker-BASE-MA35D1B1 board.
These GPIO pins are internal weakly pull-down.
Options for enabling or disabling secure booting:
