Peripherals 6
miriac SBC-LX2160A User Manual
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© MicroSys Electronics GmbH 2021
6.9
USB
6.9.1 USB Host Ports
The SBC-LX2160A system features two stacked USB 3.0 connectors for four USB-
Host ports from the LX2160 USB1 interface via a SuperSpeed USB 3.0 Hub
TUSB8041IRGCR/T. All USB host ports also support high-speed, full-speed, or
low-speed USB 2.0 operation.
The USB VBUS current is limited to 0.9A by default on each port by a Power
Distribution Switch MIC2099-1YMT with Resistor Programmable Current Limit. All
four USB Host ports can be individually enabled and have a separate overcurrent
signal.
Part Reference:
ST22 and ST23
Manufacturer:
Würth Elektronik
Type:
692141030100
Mates with:
USB Type A
cables
The following table shows the internal connections:
TUSB8041 upstream
ST1
LX2160A
Pin
Signal
Pin
Signal
Pin
Name
48
USB_VBUS
→
A30
USB1_VBUS
→
G8
USB1_VBUS
54
USB_DM_UP
↔
B32
USB1_D_N
↔
F9
USB1_D_N
53
USB_DP_UP
↔
B31
USB1_ D _P
↔
F8
USB1_D_P
55
USB_SSTXP_UP
→
B34
USB1_RX_P
→
C8
USB1_RX_P
56
USB_SSTXM_UP
→
B35
USB1_RX_N
→
D8
USB1_RX_N
58
USB_SSRXP_UP
←
D34
USB1_TX_P
←
A9
USB1_TX_P
59
USB_SSRXM_UP
←
D35
USB1_TX_N
←
B9
USB1_TX_N
-
Not used
←
A35
USB1_DRVBUS
←
A7
USB1_DRVBUS
-
Not used
→
A34
USB1_PWRFLT
→
B7
USB1_PWRFAULT
-
GND (Host Mode)
→
G3
USB1_UID
→
E9
USB1_ID
Table 6-19 USB 1 Hub pin assignment
The signal USB1_UID is per default (Jumper closed) connected to GND forcing
Host-Mode. Leave the Jumper open to enable Device-Mode.
ST22/ST23
(Bottom)
TUSB8041 downstream P1/P3
Pin
Signal
Pin
Signal
1
Vbus+
→
1
(J36/J39)
VOUT
2
D-
↔
2 / 18
USB_DM_DN1/3
