Tool/software:
Hi TI team,
We are using TI TAS6584 in one of our customer project. We are facing critical issue in load diagnostics part. Please help us.
I/P voltage to Amplifier is 24V
Below are the registers written in sequence :
STATE_CTRL registers
reg 3 data 22
reg 4 data 22
CURRENT_SENSE
reg 5 data f
ASI_CTRL Registers
reg 20 data 0
reg 21 data 14
reg 23 data f
reg 25 data f
reg 28 data 1
reg 29 data 0
reg 2c data 0
reg 2d data 81
reg 2e data 1
reg 2f data 0
reg 31 data 3
reg 32 data 0
reg a4 data 0
DIG_VOL_CH Registers
reg 40 data 30
reg 41 data 30
reg 42 data 30
reg 43 data 30
DSP_CTRL2 Register
reg 3a data 0
AGAIN Registers
reg 4a data 0
reg 4b data 0
reg 4c data 0
reg 4d data 0
DC LDG Ctrl 1 Register
reg b0 data 81
ANA_CTRL2 Register
reg 52 data 0
DC LDG Ctrl 1
reg b0 data 1
MODE_CTRL
reg 1 data 8
STATE_CTRL registers
reg 3 data 33
reg 4 data 33
STATE_CTRL registers
reg 3 data 11
reg 4 data 11
Amplifier does not enter into Hi-Z state (3 retires)
Able to detect all startup faults( open load, short to load, short to power and short to ground faults)
STATE_CTRL registers
reg 3 data 99
reg 4 data 99
Amplifier enters into MUTE state successfully
STATE_CTRL registers
reg 3 data 44
reg 4 data 44
Amplifier enters into PLAY state successfully once clock from DSP is present
MODE_CTRL
reg 1 data 8
at this stage - runtime short faults is monitored every 500ms
observation:
fault clearing issue :
if short to Ground is kept before board startup, its not getting cleared even if fault clearing is done repeatedly every 500ms
if short to Power is kept before board startup, its not getting cleared even if fault clearing is done repeatedly every 500ms
fault detection issue :
Below short Fault is injected once amplifier reaches PLAY state
Able to detect/removal of short to Ground fault at runtime.
but Unable to detect short to Power(14V) fault at runtime.
Any suggestions to resolve this?
