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USIM2_DATA
USIM2_CLK
USIM2_RST
USIM2_DET
SD Card Interface
Pin Name
SD_CLK
SD_CMD
SD_DATA0
SD_DATA1
SD_DATA2
SD_DATA3
SD_DET
SD_LDO9C
SD_LDO6C
SG560D_Series_Hardware_Design
169
DIO
(U)SIM2 card data
168
DO
(U)SIM2 card clock
166
DO
(U)SIM2 card reset
(U)SIM2 card
163
DI
detect
Pin No.
I/O
Description
188
DO
SD card clock
180
DIO
SD card command
184
DIO
SDIO data bit 0
185
DIO
SDIO data bit 1
177
DIO
SDIO data bit 2
181
DIO
SDIO data bit 3
SD card hot-swap
174
DI
detect
Power supply for
176
PO
SD card
173
PO
SD card pull-up
Smart Module Series
1.8/2.95 V
1.8 V
DC Characteristics
1.8/2.95 V
1.8 V
Vnom = 2.95 V
I
max = 600 mA
O
Vnom = 1.8/2.95 V
Pull it up to
USIM2_VDD with
an external 20 kΩ
resistor.
Active low.
Pull it up to
1.8 V externally.
If not used, keep it
unconnected.
Disabled by
default, and can be
enabled via
software
configuration.
Comment
Control
characteristic
impedance as
45 Ω.
Active low by
default.
External 1.8 V
pull-up is required.
When using it, it is
recommended to
add 1–4.7 μF
bypass capacitors
with a total
capacitance not
exceeding 18.8 μF.
Only for SD card
35 / 134
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