TAS5731MPHPR datasheet(61/81 Pages) TI1

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TAS5731M

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SLOS838C – JULY 2013 – REVISED AUGUST 2015

10.2.1.2 Detailed Design Procedure

10.2.1.2.1

Component Selection and Hardware Connections

The typical connections required for proper operation of the device can be found in the TAS5731EVM User’s

Guide (SLOU331). The device was tested with this list of components; deviation from this list of typical

application components, unless recommended by this document, may produce unwanted results, which could

range from degradation of audio performance to destructive failure of the device.

10.2.1.2.2

2C Pullup Resistors

Customary pullup resistors are required on the SCL and SDA signal lines. They are not shown in the Typical

Application Circuits, because they are shared by all of the devices on the I2C bus and are considered to be part

of the associated passive components for the System Processor. These resistor values must be chosen per the

guidance provided in the I2C Specification.

10.2.1.2.3

Digital I/O Connectivity

The digital I/O lines of the TAS5731M are described in previous sections. As discussed, whenever a static digital

pin (that is a pin that is hardwired to be HIGH or LOW) is required to be pulled HIGH, it must be connected to

DVDD through a pullup resistor to control the slew rate of the voltage presented to the digital I/O pins. It is not,

however, necessary to have a separate pullup resistor for each static digital I/O line. Instead, a single resistor

can be used to tie all static I/O lines HIGH to reduce BOM count.

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