TQ TQMa6ULxL, Руководство пользователя

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User's Manual l MBa6ULxL UM 0102 l © 2022, TQ-Systems GmbH Page 11
3.2 Communication interfaces
3.2.1 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.
TQMa6ULxL
Mini PCIe 1 (X25)
Stacked
USB Type-A
(X12)
USB 2.0 Hub
USB H3
USB H1
USB OTG2
Mini PCIe 2 (X24)
USB H4
USB H2
Bot
Top
Figure 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