Hardware Design

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SIM8200EA-M2 card Hardware Design _V1.01 26 2019-06-27
3.6 USB3.1 Interface
The module support one integrated USB interface which complies with the USB 3.1 specifications
and supports super speed up to 10Gbps. The USB interface is used for AT command
communication, data transmission, GNSS NMEA output, software debugging and voice over USB.
Note
：
The USB3.1-Tx+ and USB3.1-Tx- should be routed together and the nets must be traced
by 90Ohm+/-10% differential impedance. The same treatment should be needed for the routing
of USB3.1-RX+ and USB3.1-RX,Four times the width between TX and RX.
3.7 USB2.0 Interface
The Module implements a USB interface compliant with the USB2.0 specification. The module
supports three USB speeds: low-speed (1.5Mbps), full-speed (12Mbps) and high-speed (480Mbps).
But the OTG function and USB charging function are not supported.
Note
：
The USB_DN and USB_DP nets must be traced by 90Ohm+/-10% differential impedance.
Module is used as a USB device by default. Module supports the USB suspend and resume
mechanism which can reduce power consumption. If there is no data transmission on the USB bus,
Module will enter suspend mode automatically, and will be resumed by some events such as voice
call, receiving SMS, etc.
3.8 PCIe Interface
Under development
3.9 UIM Interface
There is an eSIM card on the board that is connected to the inside of the SIM2 signal line. Users
can use eSIM card on the board or an external SIM card. Module supports both 1.8V and 2.85V
UIM Cards.
Table 11: UIM electronic characteristic in 1.8V mode (UIM-PWR=1.8V)
Symbol Parameter
Min. Typ. Max.
Uni
t
UIM-PWR LDO power output voltage
1.75 1.8 1.95 V
V
IH
High-level input voltage 0.65*UIM-PWR - UIM-PWR +0.3 V
V
IL
Low-level input voltage
-0.3 0 0.35*UIM-PWR V
V
OH
High-level output voltage
UIM-PWR -0.45 - UIM-PWR V
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