Tool/software:
Hi,
We are using the TAS2563 smart amplifier in one of our devices. We wish to utilise the speaker open or short detection feature supported by the IC. However, we are unable to get the right indication as we are in tuning mode.
1. Is there a way to detect speaker open case and speaker normal load in particular by shifting to ROM mode on the go? If so, kindly let us know the procedure.
2. The R value is 4E of the speaker which is being used for testing. In page 5, for registers 0x1c to 0x1f the value is 00 2b e2 be corresponding to 4.8E and for registers 0x20 through 0x23 the value is 00 1d 41 d4 corresponding to 3.2E.
3. After performing the software reset, 0x25 reg in Page 0 always indicates a value of 0x28 (Indicating open load) in all the three cases: Speaker connected, speaker short or speaker open. This behaviour is observed in case of both EVK and our device as well.
PFA (SW_Reset_EVK_ROM_Mode.txt)Direct I2C commands used to execute the same. Is there something we are missing here?
w 98 00 00 w 98 7f 00 #Software reset w 98 00 00 w 98 01 01 #Clear all flags and set required interrupt mask w 98 00 00 w 98 30 1d w 98 1b c7 w 98 1a fd #Page 5 Upper and Lower Threshold w 98 00 05 w 98 1c 00 w 98 1d 2b w 98 1e e2 w 98 1f be w 98 20 00 w 98 21 1d w 98 22 41 w 98 23 d4 #Load diagnostic routine w 98 00 00 w 98 3d 0e w 98 02 43 d 100 r 98 25 01
BR,
Rekha