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USIM1_CLK
USIM1_RST
USIM1_DET
USIM2_VDD
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
SC690A_Series_Hardware_Design
143
DO
(U)SIM1 card clock
144
DO
(U)SIM1 card reset
(U)SIM1 card hot-
145
DI
plug detect
(U)SIM2 card
210
PO
power supply
209
DIO
(U)SIM2 card data
208
DO
(U)SIM2 card clock
207
DO
(U)SIM2 card reset
(U)SIM2 card
256
DI
detect
Pin No.
I/O
Description
70
DO
SD card clock
69
DIO
SD card command
68
DIO
SDIO data bit 0
67
DIO
SDIO data bit 1
66
DIO
SDIO data bit 2
65
DIO
SDIO data bit 3
Smart Module Series
Active Low.
Require external
pull-up to 1.8 V.
If unused, keep
this pin open.
Disabled by
default, and can
be enabled
through software
configuration.
Either 1.8 V or
2.95 V (U)SIM
card is supported.
Active Low.
Need external
pull-up to 1.8 V.
If unused, keep
this pin open.
Disabled by
default, and can
be enabled
through software
configuration.
DC
Comment
Characteristics
26 / 105
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