User's Manual l MBa6ULxL UM 0101 l © 2018, TQ-Systems GmbH
Page 11
4.2
Communication interfaces
4.2.1
USB 2.0 Hi-Speed Host
The MBa6ULxL provides two USB 2.0 Host (double stack USB Type-A) and USB 2.0 Host interfaces at both Mini PCIe connectors.
Illustration 7:
Block diagram USB Host interfaces
The following tables show the pinout of the connectors used.
Table 9
Pinout USB Host 1 & 2, stacked USB Type-A – X12
Pin
Pin name
Signal
Direction
Remark
1A
VBUS
USB_H1_VBUS
P
100 µF to DGND + EMI Filter
2A
D–
USB_H1_D_N
I/O
Common Mode Choke in series
3A
D+
USB_H1_D_P
I/O
Common Mode Choke in series
4A
DGND
DGND
P
–
1B
VBUS
USB_H2_VBUS
P
100 µF to DGND + EMI Filter
2B
D–
USB_H2_D_N
I/O
Common Mode Choke in series
3B
D+
USB_H2_D_P
I/O
Common Mode Choke in series
4B
DGND
DGND
P
–
M1 – M4
DGND
DGND
P
–
Table 10
Pinout USB Host 3, Mini PCIe 1 – X25
Pin
Pin name
Signal
Direction
Remark
36
D–
USB_H3_D_N
I/O
Common Mode Choke in series
38
D+
USB_H3_D_P
I/O
Common Mode Choke in series
Table 11
Pinout USB Host 4, Mini PCIe 2 – X24
Pin
Pin name
Signal
Direction
Remark
36
D–
USB_H4_D_N
I/O
Common Mode Choke in series
38
D+
USB_H4_D_P
I/O
Common Mode Choke in series
The USB host port of the TQMa6ULxL provides a theoretical data rate of 480 Mbit/s. The data rate is shared amongst the
connected ports. The data rates of the ports can significantly deviate depending on the hardware and software used.
Table 12:
Characteristics USB
Parameter
Min.
Typ.
Max.
Unit
Remark
Voltage
4.75
5
5.25
V
–
Current
–
500
900
mA
–
Read
–
15.7
–
Mbyte/s
USB stick at port 1: 100 Mbyte file, 10 Mbyte block size
Write
–
7.4
–
Mbyte/s
USB stick at port 1: 100 Mbyte file, 10 Mbyte block size
