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FT2232HL
BB_FT2232_UART_TX
BB_FT2232_UART_RX
ESD Protection
TPD12S016PWR
FT2232_USB_DM
FT2232_USB_DP
Micro USB
Connector
Copyright © 2016, Texas Instruments Incorporated
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Common Mode Choke
90E
ESD Diodes
TPD2EUSB30
Micro USB
Connector
Power Distribution
Switch
TPS2051B
DM
DP
DM
DP
ID
USB0_DRVVBUS
USB0_VBUS
DC_VCC5V0
Copyright © 2016, Texas Instruments Incorporated
USB Interface
59
SPRUIC7 – December 2016
Copyright © 2016, Texas Instruments Incorporated
CSK Carrier Card Interface
7.10 USB Interface
The TMS320DMx processor modules support a USB host and device controller that provides a low-cost
connectivity solution for consumer portable devices by providing a mechanism for data transfer to a USB
host up to 480 Mbps. The USB controller complies with the USB 2.0 standard high-speed and full-speed
functions.
The USB signals of the CSK carrier card are terminated at micro USB B-type connector J12, shown in
. ESD diodes are provided for the USB signals. The USB ID pin on the connector is connected
to the USB ID pin of the TMS320DMx processors for host and device configuration.
The drive-bus signal (USB0_DRVVBUS) from the TMS320DMx processor controls the power distribution
switch (TPS2051B), which supplies VBUS (+5 V) from the CSK carrier card to the USB device that is
connected to the micro USB connector. By default, the power distribution switch is disabled (pulled low).
The DMx processor should drive the USB0_DRVVBUS signal high to enable the power distribution switch.
The TPS2051B supports a maximum current of 500 mA at 5 V from the CSK carrier card.
Figure 7-10. USB Interface
7.11 UART Interface
The UART interfaces of the board-to-board connector is connected to the FT2232 chip (for UART to USB
functionality), shown in
Figure 7-11. UART Interface