Texas Instruments TUSB2136 manual Jumpers and Test Points

Page 15

Jumpers and Test Points

3.5 Jumpers and Test Points

 

Table 3–2 describes the jumpers J1 and J2, used to connect P3.0 and P3.1

 

to D6 and D7 respectively, which should only be done when P3.0/S0 and

 

P3.1/S1 are not set to GND for VID/PID selection (see the TUSB2136

 

keyboard hub controller data sheet, literature number SLLS442) via SW1–3

 

and SW1–4.

 

Table 3–2 also describes the various 0-Ω resistors used as jumpers. Test

 

points are located throughout the EVM. For location of these test points, see

 

the EVM Layout section of this user’s guide.

Table 3–2. Jumpers and Test Points

 

 

Jumpers

Description

 

 

J1

Connects P3.1 to D7

 

 

J2

Connects P3.0 to D6

 

 

J9

Connects the serial data line of the EEPROM to the TUSB2136. Installed at factory.

 

 

J10

Connects power to the RS232 interface chip

 

 

J11, J12

Connects the transmit and receive lines on the RS232 interface chip to the TUSB2136

 

 

SW1

A set of six switches used to configure the TUSB2136. For proper operation with the

firmware and EVM, SW1–3, SW1–5, and SW1–6 should be set to on.

 

 

 

R29, R36, R37, R38

0-Ω resistors on power lines which may be removed to insert a current meter

 

 

3.6 EEPROM

The EEPROM is used for application-specific firmware. The TUSB2136 automatically reads the EEPROM at power up via the I2C bus. A header must be added to the application firmware before loading into the EEPROM. This header format is specified in the bootcode document (literature number SLLU025), which can be found on the EVM web page at www.ti.com/sc/usb–kbdkit. The header may be generated automatically with the I2C header generation utility software also found on the EVM website

For convenience, the EEPROM has been installed on a socket. If desired, the socket may be removed and the EEPROM can be soldered directly onto the board. The firmware installed at the factory supports the miniature QWERTY keyboard with the matrix shown in Table 3–3. The miniature QWERTY keyboard connects to J3 and J4.

EVM Operation

3-3

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Contents User’s Guide Important Notice EVM Important Notice EVM Warnings and Restrictions Read This First How to Use This ManualPage Tables ContentsViii Introduction Required Hardware and Software Hardware Overview Page Eeprom EVM OperationLED LED DescriptionJumpers and Test Points Jumpers and Test PointsQwerty Keyboard Matrix COLROW EVM Operation EVM Bill of Materials for Edge Number Bill of MaterialsSW1 EVM Bill of Materials For fdge NumberEVM Layout

TUSB2136 specifications

Texas Instruments (TI) is a renowned leader in semiconductor technology, and one of its notable offerings is the TUSB2136. This USB 2.0 hub controller is specifically designed to facilitate seamless connectivity in various electronic applications, making it a vital component in today’s digital ecosystem.

The TUSB2136 is based on USB technology, supporting a high-speed data transmission rate of up to 480 Mbps. One of its key features is the ability to manage multiple USB ports, specifically providing support for up to three downstream ports. This allows a single TUSB2136 chip to connect multiple devices, significantly enhancing system design flexibility and efficiency.

A significant advantage of the TUSB2136 is its low power consumption, which is crucial for battery-operated devices. The controller incorporates a low-power sleep mode that helps reduce energy consumption when the device is inactive, thus extending battery life. Additionally, it complies with USB Power Delivery specifications, allowing for efficient power management and distribution across connected devices.

The TUSB2136 is built on TI's proprietary technology, which enhances reliability and performance. It utilizes integrated supervisory and control functionality that ensures proper function and reduces the need for external circuitry. This integration leads to simplified designs and smaller footprints, which is especially beneficial in compact devices.

Another noteworthy characteristic of the TUSB2136 is its robust support for a variety of communication protocols. It is designed to handle different USB device classes seamlessly, supporting functions such as mass storage, human interface devices, and audio devices. This versatility makes it an ideal choice for a wide range of applications, from consumer electronics to industrial automation.

The device also features advanced fault detection capabilities. In the event of a short circuit or other issues, the TUSB2136 can help isolate the problem, ensuring system reliability and user safety. Its compliance with USB specifications means that designers can integrate it into their systems with confidence that it meets industry standards.

In summary, the Texas Instruments TUSB2136 USB hub controller stands out with its multi-port support, low power consumption, high data transfer rates, and reliability. It represents a significant advancement in USB connectivity technology, making it an essential component for designers looking to enhance their products with efficient and flexible USB solutions. As technology continues to evolve, the versatility and features of the TUSB2136 will undoubtedly play a crucial role in the development of future electronic devices.
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