Type-A to
micro-B
Cable
USB Host
T
y
p
e
C
TUSB320-xA-EVM
Mi
cr
o
U
S
B
T
y
p
e
C
TUSB320-xA-EVM
Mi
cr
o
U
S
B
USB Hub/Device
Configured as
UFP
Micro AB to
Type A
Receptacle
Configured as
DFP
TUSB320-LA-EVM and TUSB320-HA-EVM Configuration Examples
6
SLLU235A – January 2016 – Revised November 2018
Copyright © 2016–2018, Texas Instruments Incorporated
TUSB320-LA-EVM and TUSB320-HA-EVM
3.2
DFP Operation
The board can be configured to operate in DFP mode using the PORT pin on the board or I
2
C register
setting. If the PORT pin is used, SW1.7 must be switched ON and the Mode_Select bits at addr0x0A bit
5:4 must be set to 00b. The Mode_Select is 00b by default, so there is no need to reprogram unless it has
been reconfigured for other modes of operation.
describes an example configuration using two TUSB320-xA-EVMs: one configured as DFP, the
other configured as UFP. Refer to
for TUSB320LA/HA UFP EVM configuration.
Figure 2. Example Configuration Using Two TUSB320-xA-EVMs
1. Configure TUSB320LA/HA DFP EVM DIP switch SW1 as shown in
.
Table 4. TUSB320LA/HA DFP EVM DIP Switch SW1
Configuration
Reference
Designator
SW Control Function
Switch Setting
SW1.1
EN#/EN
ON for
TUSB320LA
OFF for
TUSB320HA
SW1.2
OUT2
OFF
SW1.3
OUT1
OFF
SW1.4
ADDR
OFF
SW1.5
INT
OFF
SW1.6
320_VBUS
Don’t care
SW1.7
PORT_H
ON
SW1.8
PORT_L
OFF
2. Connect TUSB320LA/HA DFP EVM to a legacy USB host using a Type-A to micro-B cable via micro-
AB connector (J5) provided on board. The LED D10 should illuminate by the VBUS provided by the
legacy USB host over the Type-A to micro-B cable connection.
3. Connect TUSB320LA/HA UFP EVM to the TUSB320LA/HA DFP EVM using a Type-C Cable. The
TUSB320LA/HA UFP EVM should be powered by VBUS provided over the Type-C cable connection.
The LED D10 on the TUSB320LA/HA UFP EVM should also light up. Upon the Type-C cable, attach to
the TUSB320LA/HA DFP EVM, D4 should light up indicating the ID pin has been driven low from the
TUSB320LA/HA.
4. The USB device plugged into the micro-AB USB receptacle (J6) of the TUSB320LA/HA UFP EVM
should enumerate at USB2 speed: HS, FS, or LS.
