Hello,
My customer is asking about LM48100Q-Q1.
They are setting register for initial as following.
(After the power is supplied to device.)
Addr. Data
00 0x14 (POWER_ON/ INPUT1 : on)
01 0x20 (DG_EN/DG_CONT/DG_RESET off)
02 0x40
03 0x73 (0dB)
04 0x93 (0dB)
Step (1) After above setting, they tried to control volume register(addr. 03/04) but the sound does not output.
Step (2) The diagnostic Control is enabled (DG_EN:bit 1=1,POWER_ON register disable),
next the POWER_ON register is enabled. ->The sound became to output.
But when the volume register is controlled, click sound is happened.
(Question)
(1) According to datasheet,
“When power is initially applied to the device, the LM48100Q-Q1 initializes, performing the full diagnostic sequence.”
At that time, the full diagnostic sequence is performed regardless of the state of DG_EN and DG_CONT.
(The one-shot diagnostic sequence will not be performed.)
And this sequence can be terminated by setting DG_RESET = 1.
My understanding is correct?
“When power is initially applied to the device” is meaning that the power is supplied to device( but POWER_ON disable)
or POWER_ON register is enabled. Which one or both?
(2) About click sound,
I think that this issue might be solved by setting input mute or volume gain(minimum).
But it seems that LM48100Q-Q1 is not supported the pop/click sound.
Do you have any idea or solution more?
Regards,
Tao_2199
