VS1053B Datasheet, PDF(40/79 Page) List of Unclassifed Manufacturers

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VS1053B Datasheet, PDF (40/79 Pages) List of Unclassifed Manufacturers – Ogg Vorbis/MP3/AAC/WMA/MIDI AUDIO CODEC

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VLSI

Solution y

VS1053b preliminary

VS1053B

8. FUNCTIONAL DESCRIPTION

8.7.2 SCI STATUS (RW)

SCI STATUS contains information on the current status of VS1053b. It also controls some low-level

things that the user does not usually have to care about.

Name

SS DO NOT JUMP

SS SWING

SS VCM OVERLOAD

SS VCM DISABLE

SS VER

SS APDOWN2

SS APDOWN1

SS AD CLOCK

SS REFERENCE SEL

Bits

14:12

9:8

7:4

Description

Header in decode, do not fast forward/rewind

Set swing to +0 dB, +0.5 dB, .., or +3.5 dB

GBUF overload indicator â1â = overload

GBUF overload detection â1â = disable

reserved

Version

Analog driver powerdown

Analog internal powerdown

AD clock select, â0â = 6 MHz, â1â = 3 MHz

Reference voltage selection, â0â = 1.2 V, â1â = 1.65 V

SS DO NOT JUMP is set when WAV, Ogg Vorbis, WMA, MP4, or AAC-ADIF header is being decoded

and jumping to another location in the ï¬le is not allowed.

If AVDD is higher at least 3.3 V, SS REFERENCE SEL can be set to select 1.65 V reference voltage to

increase the analog output swing.

SS AD CLOCK can be set to divide the AD modulator frequency by 2 if XTALI/2 is too much.

SS VER is 0 for VS1001, 1 for VS1011, 2 for VS1002, 3 for VS1003, 4 for VS1053, 5 for VS1033, and

7 for VS1103.

SS APDOWN2 controls analog driver powerdown. SS APDOWN1 controls internal analog powerdown.

These bit are meant to be used by the system ï¬rmware only.

If the user wants to powerdown VS1053b with a minimum power-off transient, set SCI VOL to 0xffff,

then wait for at least a few milliseconds before activating reset.

VS1053b contains GBUF protection circuit which disconnects the GBUF driver when too much current

is drawn, indicating a short-circuit to ground. SS VCM OVERLOAD is high while the overload is

detected. SS VCM DISABLE can be set to disable the protection feature.

SS SWING allows you to go above the 0 dB volume setting. Value 0 is normal mode, 1 gives +0.5 dB,

and 2 gives +1.0 dB. Although the range of the register is upto 7, higher settings than 2 do not work and

should not be used.

Version 0.5, 2007-12-03

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