MAS3587F Micronas, MAS3587F Datasheet - Page 13
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MAS3587F
Manufacturer Part Number
MAS3587F
Description
MPEG Layer 3 Audio Encoder/Decoder
Manufacturer
Micronas
Datasheet
1.MAS3587F.pdf
(83 pages)
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ADVANCE INFORMATION
2.9.3. Power Supply Configurations
One of the following supply configurations may be
used:
– Configuration 1: DC/DC 1 (e.g. 2.7 V) supplies con-
– Configuration 2: All components are powered by an
If DC/DC converter 1 is used, it must supply the analog
circuits (pins AVDD0, AVDD1) of the MAS 3587F.
If the DC/DC converters are not used, pin DCEN must
be connected to VSS, DCSOx must be left vacant.
2.10. Battery Voltage Supervision
A battery voltage supervision circuit (at pin VBAT) is
provided which is independent of the DC/DC convert-
ers. It can be programmed to supervise one or two bat-
tery cells. The voltage is measured by subsequently
setting a series of voltage thresholds and checking the
respective comparison result in register 77
Table 3–3 on page 20).
Micronas
troller, flash and MAS 3587F audio parts, DC/DC 2
generates e.g. 2.5 V/3.5 V for the MAS 3587F DSP
(see Fig. 2–8).
external source, no DC/DC converter is used (see
Fig. 2–9).
hex
(see
Fig. 2–8: Configuration1: DC/DC-Converter supply
Fig. 2–9: Configuration2: External power supply
External
Supply
Flash
Flash
C
C
e.g. 2.7 V
e.g. 3.5 V
/2.5 V
e.g. 3.5 V/
2.7 V
VSENS1
I
XVDD
VDD
VSENS2
AVDD0/1
VSENS1
I
VDD
XVDD
VSENS2
AVDD0/1
2
2
CVDD
CVDD
DC/DC1
DC/DC2
DC/DC1
DC/DC2
Analog
Analog
I
Parts
Parts
I
2
2
C
C
off
off
on
on
MAS 3587F
DSP
DSP
13
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