SLOSE75B February 2022 – March 2023 TAS2780
PRODUCTION DATA
The TAS2780 has a diagnostic generator that can be used without any PCM clocking to the device. If DG_CLK register bit is set low, an internal oscillator is used to generate the test patterns selected by DG_SIG[4:0] register bits. For sine-wave generation the sampling frequency fs should be first set using the SAMP_RATE[2:0] register bits.
The programable DC level for diagnostic mode can be set using the DG_DC_VAL[31:0] register bits.
To play a DC diagnostic tone set the bits HPF_FREQ_PB[2:0] in register 0x04 to 0h (disabled DC blocker).