SLOU553 May   2021 TAS6424E-Q1

 

  1. 1Trademarks
  2. 2Hardware Overview
    1. 2.1 TAS6424E-Q1 Evaluation Module Description
  3. 3Software Overview
    1. 3.1 PurePath Console 3 (PPC3) Access and Description
    2. 3.2 PurePath Console 3 – TAS6424E EVM Home Window
    3. 3.3 PurePath Console 3 – TAS6424E EVM Register Map Window
    4. 3.4 PurePath Console 3 – TAS6424E EVM Monitor and Control Window
    5. 3.5 TAS6424E-Q1 EVM Start Up
      1. 3.5.1 TAS6424E-Q1 EVM Setup
      2. 3.5.2 TAS6424E-Q1 Settings on Device Monitor and Control Window
        1. 3.5.2.1 Global Control Section
        2. 3.5.2.2 Channel Control Section
        3. 3.5.2.3 Miscellaneous Control Section
        4. 3.5.2.4 Faults and Warnings Section
        5. 3.5.2.5 AC Load Diagnostics Section
        6. 3.5.2.6 DC Load Diagnostics Section
      3. 3.5.3 TAS6424E-Q1 Settings on Register Map Window
      4. 3.5.4 I2C Window
  4. 4Board Layouts, Bill of Materials, and Schematic
    1. 4.1 TAS6424E-Q1 EVM Layouts
    2. 4.2 TAS6424E-Q1 EVM Schematic
    3. 4.3 Bill of Materials
  5. 5Revision History

3.5.2.3 Miscellaneous Control Section

There are miscellaneous settings that are available on the GUI for easy access.

OSR is oversampling bit. For lower idle noise 64X OSR is set as default. For wider bandwidth, 128X OSR can be used. 64X OSR is recommended.

TAS6424E-Q1 supports parallel Bridge-Tied Load. Channels 1 and 2 can be one PBTL channel and channels 3 and 4 can be the other. Before setting a set of channels to PBTL mode, connect the (+) terminals as PBTL channel (+) and the (-) terminals as PBTL channel (-). Then connect the speaker (+) to the PBTL channel (+) and connect the speaker (-) to the PBTL channel (-).

The over-current has two levels. The lower level is 1. The default is level 2. When running at lower output current, OC level can be set to 1. I2S and TDM are automatically detected. Use the pull down menu from “Input Format” box to manually select the audio format.

If sampling frequency is greater than 48 kHz, select 96 kHz from the “Input FS” pull down.

Over-temperature warning can be programmable, use the pull down menu to choose the OTW temperature. The default setting is 120°C.

The output switching frequency (FSW) or Pulse Width Modulation frequency (PWM) is set at 2.1 MHz. The pull-down menu on the PWM FRQ box is used to choose a lower FSW. LC value should be adjusted when FSW is changed.

The offset phase for each channel is set at 45 degrees. This helps lower the ripple current on the power supply as not all the channels switch at the same time. To choose a different phase offset, use the pull-down menu on the “Phase” box.

There are four gain settings in TAS6424E-Q1: low, normal, high and maximum. The default setting is high. However, the recommended setting is normal for lower noise performance for driving speakers at
14.4 VDC. The gain setting is selectable via the drop down menu in the ”Gain” box.

The volume slew rate is measured with sampling frequency. The default setting is 1 period of sampling frequency (FSYNC or FS). This rate is selectable from 1 to 8 sampling periods with the drop down menu under “Vol Rate” box.

GUID-A507A773-9846-4004-BC6C-E5536B706B8B-low.png Figure 3-12 Miscellaneous Control Section