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User's Manual l MBa335x UM 0202 l © 2018, TQ-Systems GmbH
Page 22
4.2.2
USB 2.0 Hi-Speed OTG
The TQMa335x USB OTG interface is provided on the MBa335x. The OTG compatibility is maintained by a 5-pin micro-AB
connector. The ID signal is directly routed to the CPU.
Illustration 15:
Block diagram USB 2.0 Hi-Speed OTG
The interface can be a client or a host. To use this feature the appropriate software support is however necessary.
The OTG port provides a theoretical data rate of 480 Mbit/s. The data rate can significantly deviate depending on the hardware
and software used.
Table 29:
Characteristics USB OTG
Parameter
Min.
Typ.
Max.
Unit
Voltage
4.75
5.00
5.25
V
Current
–
500
900
mA
Illustration 16:
Position of USB OTG X9
Table 30:
USB Hub, component
Manufacturer / Number
Description
TE Connectivity / 1981584-1
USB receptacle, angled, micro-AB
Table 31:
Pinout USB-Host OTG, X9
Pin
Pin name
Signal
Dir.
Remark
1
VBUS
USB_OTG_VBUS
P
100 µF to DGND; EMI filter, I
max
= 100 mA
2
D–
USB_OTG_D_N
I/O
Common mode choke in series
3
D+
USB_OTG_D_P
I/O
Common mode choke in series
4
ID
USB_OTG.ID
I
5
DGND
DGND
P
M1-6
DGND
DGND
P