Rev 1.1
Page 17 of 61
i.MX6 Pico ITX - SBC Hardware User Guide
iWave Systems Technologies Pvt. Ltd.
Table 3: Micro SD Connector Pin Assignment
Pin No
Signal Name
Signal Type
Voltage Level/
Termination
Description
1
SD3_DATA2
Input / Output
3.3V CMOS
SD3 Data Line (Bit2)
2
SD3_DATA3
Input / Output
3.3V CMOS
SD3 Data Line (Bit3)
3
SD3_CMD
Input / Output
3.3V CMOS/
10K Pull-up
SD3 Command Response
4
VCC_3V3
Power
3.3V
Card Supply Voltage
5
SD3_CLK
Output
3.3V CMOS
SD3 Clock
6
VSS
Power
0V
Ground
7
SD3_DATA0
Input / Output
3.3V CMOS
SD3 Data Line (Bit0)
8
SD3_DATA1
Input / Output
3.3V CMOS
SD3 Data Line (Bit1)
9
GPIO7_1_SD3_CD
(SD3_DAT4)
Input
3.3V CMOS/
10K Pull-up
SD3 Card Detect
10,11,
12,13
GND
Power
0V
Ground
2.4.5
Standard SD Connector
The Standard SD Connector (J23) is directly connected to the eSDHC channel 1 (SD1) of the i.MX6 CPU.
This connector supports up to 4 bit data transfer along with card detect feature. The main power to the
Standard SD connector is 3.3V. Optionally, 8bit data connector footprint is provided in the board and
not supported by default.
The Standard SD connector can support SD memory cards, SDIO cards (Wi-Fi, BT etc.) which are
designed to fit in a standard SD connector. Standard SD connector is physically located on bottom of the
board.
