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BU7839GVW Fiches technique(PDF) 4 Page - Rohm

No de pièce BU7839GVW
Description  Digital Input Hi-Fi Class-D Headphone Amplifier
Download  16 Pages
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Fabricant  ROHM [Rohm]
Site Internet  http://www.rohm.com
Logo ROHM - Rohm

BU7839GVW Fiches technique(HTML) 4 Page - Rohm

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Block diagram
2wire
CPU I/F
Audio
I/F
Interpolator
ΔΣ
Modulator
Level Shifter
Interpolator
ΔΣ
Modulator
Level Shifter
Register
Power
on/off
control
MCLK
BCLK
LRCLK
SDI
SCL
SDA
DVDD
DVSS
ADR
TEST
PLL
REFCLK
DVDDIO
DVSSIO
12MHz in
VDD_R
OUT_R
VSS_R
VDD_L
OUT_L
VSS_L
PLLCAP
PLLVDD
DVSS
MUTE_R
MUTE_L
256fs
NRST
Fig. 4 Block diagram
Description of each block
2wire CPU I/F
Interface with CPU, 2-wire control
Write/read possible
Device address is 2-address selectable (33h,36h) with ADR terminal
Register
This LSI is controlled all by register
Write/read by 2wire CPU I/F
Audio I/F
Compatible with three modes of full front, full back and IIS
Sampling frequency compatible with 8kHz~48kHz
Interpolator,ΔΣModulator
Variable over sampling, Order-variable ΔΣ modulator
Optimum value is selected internally and automatically
Level Shifter
Level conversion in 3V series of analogue output
Built-in mute transistor for start-up sound reduction
PLL
REFCLK terminal is taken as reference clock and 256fs is created
It becomes the default setting when 12MHz is inputted to REFCLK
Please change each setting if any frequency other than 12MHz is inputted to REFCLK


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