Peripherals 6
miriac SBC-LX2160A User Manual
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© MicroSys Electronics GmbH 2021
6.9.2 USB OTG Port
The SBC-LX2160A system features one USB 3.0 OTG interface, connected to the
LX2160A USB2 interface.
This USB OTG port support high-speed, full-speed, or low-speed USB 2.0 connec-
tions. SuperSpeed USB 3.0 is only available in Host-Mode (Type A connector).
The VBUS current is limited to 0.9A by a Power Distribution Switch MIC2099-1YMT
with Resistor Programmable Current Limit.
Signal FAULT# from MIC2099 is routed via a logic inverter to USB2_PWRFLT.
Part Reference:
ST24
Manufacturer:
CUI Inc.
Type:
UJ3-MIABH-1-SMT
Mates with:
Micro USB
Type A or B cables
The following table shows the internal connections:
ST24
ST1
LX2160A
Pin
Signal
Pin
Signal
Pin
Name
1
Vbus+
→
F39
USB2_VBUS
→
G10
USB2_VBUS
2
D-
↔
E35
USB2_D_N
↔
F11
USB2_D_N
3
D+
↔
E34
USB2_ D _P
↔
F10
USB2_D_P
4
ID
→
E40
USB2_UID
→
E11
USB2_UID
5
GND
6
SSTX-
←
E43
USB2_TX_N
←
B11
USB2_TX_N
7
SSTX+
←
E42
USB2_TX_P
←
A11
USB2_TX_P
8
GND
9
SSRX-
→
E38
USB2_RX_N
→
D10
USB2_RX_N
10
SSRX+
→
E37
USB2_RX_P
→
C10
USB2_RX_P
J41
(
MIC2099)
Pin
Signal
4
ENABLE
←
A32
USB2_DRVBUS
←
E7
USB2_DRVBUS
3
FAULT#
→
A31
USB2_PWRFLT
→
G7
USB2_PWRFAULT
Table 6-22 USB 3.0 OTG Port pin assignment
USB2_PWRFLT is a high-active signal. A logic high level signals the port is in an
overcurrent situation
SSRX / SSTX is for type B connection. Type A using cross over.
Mode is set by SW6-4. Open = OTG Mode, Closed = Host Mode.
