SLASEI6A October 2019 – December 2019 TAS2564
PRODUCTION DATA.
TAS2564 supports DC Playback, detection and protection against High DC playback. To enable DC Playback, High Pass Filter in Playback path needs to be disabled by setting HPF_DIS. Device also offers protection against potentially damaging DC Voltages across speaker load if the DC Playback is enabled. DC playback higher than threshold set by DC_DET_TH for time greater than DC_DET_TM, TAS2564 will detect DC and shutdown the device. Device shutdown on high DC detection can be disabled byDC_DET_PD. DC detection feature itself can be disabled by DC_DET_EN. It is recommended to use PurePath™ Console 3 Software to configure the DC Detection and Protection feature as the software will perform the necessary math for each register.
DC_DET_EN | Setting |
---|---|
0 | DC Detection is disabled(default) |
1 | DC Detection is enabled |
HPF_DIS | SETTING |
---|---|
0
|
HPF is enabled(default) |
1
|
HPF is disabled. |
DC_DET_TM | Delay |
---|---|
00 | 20 ms |
01 | 50 ms(default) |
10 | 75 ms |
11 | 100 ms |
DC_DET_PD | SETTING |
---|---|
0 | No Powerdown on High DC detection (default) |
1 | Device powerdown on High DC detection |
It is worth noting that DC Detection inside the device is implemented with a Low Pass Filter which will cause low frequencies to cause some measurement errors in DC. DC detection filter offers 25 dB attenuation at 20 Hz and greater than 40dB attenuation for frequencies greater than 40 Hz. DC Detection Threshold should be selected while taking care of these constraints.