Seco SBC-C90 User Manual page 35

PWR_OFF#: Power Off signal for plugged modules, usually used in battery-powered systems. Fixed 2
W_DISABLE1#: M.2 Key B module disable signal #1, active low output
W_DISABLE2#: M.2 Key B module disable signal #2, active low output
UIM_RST#: Reset signal line, sent from M.2 WWAN card to the UIM module.
UIM_DATA: Bidirectional Data line between M.2 WWAN card and UIM module.
UIM_CLK: Clock line, output from M.2 WWAN card to the UIM module.
UIM_PWR: Power line for UIM module.
PCIE_RST#: Reset Signal that is sent from the SoC to all PCI-e devices available on the board. It is a +3.3V_RUN active-low signal.
CONFIG_[0..3]: Configuration inputs, +3.3V_ALW signals with 10kΩ pull-up. These signals are used to configure properly the Main Host interface according to the
Add-In Card plugged in CN20 Slot. These configuration pins are managed according to PCI Express M.2 Specifications Table 5.5.
3.3.11 microSD + miniSIM Combo Slot
+ miniSIM Combo Card Slot
Pin Signal Pin
S1 UIM_PWR
S2 UIM_RST#
S3 UIM_CLK
S4 GND
S5 ---
S6 UIM_DATA
T1 SDIO_DAT2 ST1
T2 SDIO_DAT3 ST2
Signals related to SD cards are the following:
SDIO_CD#: Card Detect Input.
SDIO_CLK: SD Clock Line (output).
SDIO_CMD: Command/Response bidirectional line.
SBC-C90
SBC-C90 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R. - Reviewed by C.M. Copyright © 2021 SECO S.p.A.
CN19
Signal
T3 SDIO_CMD
T4 SDIO_VDD
T5 SDIO_CLK
T6 GND
T7 SDIO_DAT0
T8 SDIO_DAT1
SDIO_CD#
GND
On SBC-C90 board there is also a socket, for the use of standard SD cards, to be used as
Mass Storage Device and/or Boot Device.
Moreover, SBC-C90 board can accept also miniSIM cards, for use of M.2 Key B modems.
Both these cards can be inserted in the dedicated slot of connector
CN19, which is a combo μSD/MMC + miniSIM connector, push-push
type, 2.7 mm global height, type ATTEND p/n 112G-TA00-R or
equivalent. Pinout here reported is related only to signal routing on
specific connector; internally the pin-out is the same of any standard
SD/MMC 4.0 and miniSIM card.
For ESD protection, on all signal lines are placed clamping diodes for
voltage transient suppression.
Signals related to UIM (SIM) card are described in paragraph 3.3.10 for description
-up @ 3.3V_ALW
.
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