Digital Audio Interfaces
7
SLOU495 – December 2017
Copyright © 2017, Texas Instruments Incorporated
TAS2770 Evaluation Module
ECCN: 3E991
7
Digital Audio Interfaces
Select the various digital audio interfaces on the
TAS2770EVM Reference Board
through hardware
settings and software settings. Several headers close to the TAS2770 device allow access to the following
digital audio signals:
•
I2S Data out (SDOUT) from the TAS2770 (for example, current and voltage sense data)
•
I2S Data in (SDIN) to the TAS2770
•
I2S Word clock or frame sync (FSYNC)
•
I2S Bit clock (SBCLK)
•
PDM Clock (PDMCLK0) – optional input source for TAS2770
•
PDM Clock (PDMCLK1) – optional input source for TAS2770
•
PDM Data (PDMD0) – optional input source for TAS2770
•
PDM Data (PDMD1) – optional input source for TAS2770
•
I
2
C Clock (SCLK)
•
I
2
C Data (SDA)
The TAS2770 device can also be configured for Soundwire
SM
Mode:
•
Soundwire
SM
clock - SBCLK
•
Soundwire
SM
data - SDOUT
•
Soundwire
SM
address – SDA
•
Soundwire
SM
address – FSYNC
•
Soundwire
SM
address – SCL
A jumper inserted in the SW slot of J13 sets the TAS2770 to Soundwire
SM
mode. Then J11 can be set as
desired to configure the device address.
The selection between USB (internal) and external inputs is controlled by jumpers J2 and J6. These
jumpers set TDM and I
2
C, respectively.
