Texas Instruments TUSB320-HA-EVM, Руководство пользователя

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TUSB320-LA-EVM and TUSB320-HA-EVM Features
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4 SLLU235A – January 2016 – Revised November 2018
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Copyright © 2016–2018, Texas Instruments Incorporated
TUSB320-LA-EVM and TUSB320-HA-EVM
2.3 DIP Switch Setting
The DIP switch (SW1) is provided to configure the EVM in different modes of operation.
Table 1. DIP Switch Modes of Operation
Reference
Designator SW Control
Function Default
Switch Setting Description
SW1.1 EN# for TUSB320LA
EN for TUSB320HA
ON for TUSB320LA
OFF for TUSB320HA
EN# or EN = High, if SW1.1 = OFF
EN# or EN = Low, if SW1.1 = ON
SW1.2 OUT2 OFF OUT2 = SCL with a pullup, if SW1.2 = OFF
OUT2 connected to LED, if SW1.2 = ON
SW1.3 OUT1 OFF OUT1 = SDA with a pullup, if SW1.2 = OFF
OUT2 connected to LED, if SW1.2 = ON
SW1.4 ADDR OFF For I
2
C mode of operation:
ADDR = High, if SW1.4 = OFF
ADDR = Low, if SW1.4 = ON
For GPIO mode of operation:
Remove R12 and SW1.4 = OFF
SW1.5 INT OFF INT = High, if SW1.5 = OFF
INT = OUT3, if SW1.5 = ON
SW1.6 320_VBUS OFF 320_VBUS = high/low or open if option resistors are
populated. Don’t care in normal operation.
SW1.7 PORT_H OFF PORT = Open, if SW1.7 = OFF
PORT = High, if SW1.7 = ON
SW1.8 PORT_L ON PORT = Open, if SW1.8 = OFF
PORT = Low, if SW1.8 = ON
2.4 I
2
C
The I
2
C bus can be accessed through a header: J1 or J2. 4.7-k
Ω
pullups to 3.3 V are added on I
2
C SCL
and SDA. The ADDR pin can be pulled high or low through DIP SW configuration described in
Section 2.3 , DIP Switch Setting . The ADDR pin determines the last bit of the TUSB320LA/HA I
2
C address
to be high or low. J1 is intended to match the Aardvark I2C programmer dongle pinout.
2.5 LEDs
Several LEDs are provided for easier debug purposes.
Table 2. LEDs Debug Descriptions
Reference Designator LED Name Description
D1 OUT1 Valid only in GPIO mode. Illuminates if OUT1 pin driven low.
D2 OUT2 Valid only in GPIO mode. Illuminates if OUT2 pin driven low.
D3 OUT3 Valid only in GPIO mode. Illuminates if OUT3 pin driven low.
D4 320 ID Illuminates if the ID pin of TUSB320LA/HA is driven low.
D10 POWER Illuminates if 5-V power is available.
Note that the OUT1, OUT2, OUT3 LEDs are used in GPIO mode of operation. The DIP SW must be
configured accordingly to configure the TUSB320-LA-EVM/TUSB320-HA-EVM in GPIO mode of operation.
The LED may light up dim even when OUT pins are not driven due to a pullup to 3.3 V.