IBASE SMARC Evaluation Kit - Manual (Page 42)

16 SMARC Evaluation Kit
4.2.10. SD Card Interface
SD Signals
Pin Signal Name I/O Type Power Rail Description
P39 SD2_DATA0 I/O CMOS 3.3V 4 bit data path
P40 SD2_DATA1 I/O CMOS 3.3V
P41 SD2_DATA2 I/O CMOS 3.3V
P42 SD2_DATA3 I/O CMOS 3.3V
P33 SD2_WP I CMOS 3.3V Write Protect
P35 SD2_CD# I CMOS 3.3V Card Detect
P37 SD2_PWR_EN O CMOS 3.3V SD card power enable
P36 SD2_CLK O CMOS 3.3V Clock
P34 SD2_CMD I/O CMOS 3.3V Command line
Reference Schematic
Normal
Micro SD
CN11
FOXCONN_WQ21823-DES1-7F(REV:E)
DAT2
1
CD/DATA3 2
CMD
3
VDD
4
CLK
5
VSS
6
DAT0 7
DAT1
8
PA
D 2
P2
C ON
N
P3
CD
P4
PA
D
1
P1
TP13
TP12
TP14
SD2_DATA1
TP15
TP16
+3.3V_SD R73 10K/4
TP17
SD2_DATA1
SD2_DATA0
SD2_DATA3
SD2_PWR_EN 13
SD2_DATA2
SD2_DATA0 13
SD2_WP 13
SD2_DATA1 13
SD2_CD# SD2_CD# 13
SD2_DATA3 13
SD2_DATA2
SD2_DATA3
C64
22UF/6.3V/6
SD2_DATA3
R92 10K/4
SD2_CLK SD2_CMD 13 SD2_CMD
R102 10K/4
SD2_DATA2 13 SD2_DATA2
SD2_DATA0
R103 10K/4
SD2_CLK 13
+3.3V_VCC
R119 0/4
TP11
SD2_CLK
R104 10K/4
SD2_CD#
+3.3V_SD
R79 10K/4
SD2_DATA0
SD2_DATA1
R77 10K/4 SD2_CMD
+3.3V_SD
SD2_CD#
Q11
IRLML6401TRPBF
G
D S
R55 10K/4
+3.3V_VCC
Q10
2N7002
G
D
S
R61 0/4/X
R53 10K/4/X
R57 10K/4
SD2_DATA3
SD2_DATA2
SD2_DATA0
SD2_DATA1
SD2_CLK
SD2_CMD C155 18PF/50V/4 SD2_CMD
C157 18PF/50V/4
C158 18PF/50V/4
C159 18PF/50V/4
C160 18PF/50V/4 C63
0.1UF/25V/4 C161 18PF/50V/4