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RT5510WSC Datasheet(PDF) 18 Page - Richtek Technology Corporation

Part # RT5510WSC
Description  Audio Amplifier with IV Sense
PDF  52 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT5510WSC Datasheet(HTML) 18 Page - Richtek Technology Corporation

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RT5510
Copyright © 2019 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation
www.richtek.com
DS5510-00
October
2019
18
I
2S Mode Change without PWDN
When I2S mode change, like BCK and LRCK frequency relationship, the chip will not be shut down. If the clock
source from I2S changes, I2S invalid is detected. In this case, soft muting is implemented before entering Amp off
situation. In the opposite situation, if the clock source from I2S is detected valid again, signal ramp up is
implemented at the start after it enters the operating mode.
The above procedure is shown in Figure 9 and ramp is setting by register 0x 28 bit [2:0].
BCK (I
2
S)
BCK unstable
OP
Amp Output
OP
ramp down
ramp up
Amp off
Figure 9. I2S Mode Change without PWDN
Table 3. Ramp Control Setting
Register
Bits
Bits Name
Description
0x28
2:0
VOLCTRL
Ramp control when new volume setting is
different from old setting :
000 : No ramp up/down (default)
001 : 0.5db per sample
010 : 0.5db per 2 samples
011 : 0.5dB per 4 samples
100 : 0.5dB per 8 samples
101 : 0.5dB per 16 samples
110 : 0.5dB per 32 samples
111 : 0.5dB per 64 samples



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