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Description :
This register contains the n
th
character of the song
info required (ASCII code).
CD_SONG_TYPE_INFO :
Address : 0xA6 (166)
Type : RO - AEC
Software Reset : 0
Description :
This register specifies the kind of current information
contained in the
When the track has changed the previous informa-
tion are declared “not valid”. New valid information
should be requested by user.
NB_OF_CUR_TRACK :
Address : 0xA7 (167)
Type : RO - AEC
Software Reset : 0
Description :
This register specifies the number of the current track
into his directory (sub-directories included): from 1 to
max number of track/subdirectory.
NB_OF_CUR_DIR :
Address : 0xA8 (168)
Type : RO - AEC
Software Reset : 0
Description :
This register specifies the number of the current di-
rectory into the CD: from 1 to max number of directo-
ry. This number is negative if going backward to the
end of the CD with the command directory-down.
CD_CUR_STATUS :
Address : 0xA9 (169)
Type : RO - ABO
Software Reset : 0
Description :
This register gives the status of the CD application.
b7 b6 b5 b4 b3 b2 b1 b0
Value Signification
0 information not valid
1 ID3 song name information
2 ID3 author name information
3 ID3 album name information
4 file name information
5 directory name information
6 bytes requested
7 play list content
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Bit Mode
0 0: unknown format.
1: recognized format
1 reserved.
2 0: searching track.
1: track founded.
3 0: ID3 present.
1: ID3 missing.
4 0: no error detected.
1: error detected.
5 0: CD application in pause.
1: CD application not in pause.
6 0: CD not playable.
1: CD playable.
7 0: music mode.
1: searching bytes mode
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STA016T
CD_TRACK_FORMAT
:
Address : 0xAA (170)
Type : RO - AEC
Software Reset : 0
Description :
This register specifies the format of the played track
considering the extension name. Only 1 bit can be set
in the same time:
NB_OF_SUBDIR :
Address : 0xAB (171)
Type : RO - AEC
Software Reset : 0
Description :
This register specifies the number of sub-directory in
the current directory.
NB_OF_SUB_TRACK :
Address : 0xAC (172)
Type : RO - AEC
Software Reset : 0
Description :
This register specifies the number of file in the current
directory.
DIRECTORY_LEVEL :
Address : 0xAD (173)
Type : RO - AEC
Software Reset : 0
Description :
This register specifies the current directory level.
DIR_IDENTIFIER_Bn
:
Address : 0xAE (174) to 0xB1 (177)
Type : RO - AEC
Software Reset : 0
Description :
This register specifies the nth byte of the number of
byte of the current directory. Considering that two di-
rectories have very few chance to have exactly the
same number of byte, this number allows to identify
the directory. The first byte (174) is the MSB and the
last one (177) is the LSB.
VOL_IDENTIFIER_Bn:
Address : 0xB2 (178) to 0xB5 (181)
Type : RO - AEC
Software Reset : 0
Description :
This register specifies the nth byte of the number of
byte of the CD. Considering that two CD have very
few chance to have exactly the same number of byte,
this number allows to identify the CD. The first byte
(178) is the MSB and the last one (181) is the LSB.
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Bit FORMAT
0 0 : UNKNOWN
1 : MP3
1 1: RESERVED
2 MPEG1
3 MPEG2
4 MPG
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b7 b6 b5 b4 b3 b2 b1 b0
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EXTRACT_BYTE_IDX_B
n:
Address : 0xB6 (182) to 0xB8 (185)
Type : RW - ABO
Software Reset : 0
Description :
This register specifies the n
th
byte of the index of the
byte block to extract from the CD. This number
should be relative to the beginning of the track con-
taining these bytes.
EXTRACT_ADR_MODE
:
Address : 0xBA (186)
Type : RW - ABO
Software Reset : 0
Description :
This register specifies addressing mode type for byte
extraction: if set to 0, it is a relative (to the beginning
of the current file) addressing mode, if set to 1 it is an
absolute addressing mode (relative to the beginning
of the CD).
CD_CONFIG_MODULE :
Address : 0xBC (188)
Type : RO - ABO
Software Reset : 0xA
Description :
This register set some parameters describing the
way the module transmit the data to the DSP.
3.9 COMMAND registers description
SOFT_RESET
:
Address : 0x10 (16)
Type : WO - DWT
Software Reset : 0
Description :
When user write 1 in this register, a soft reset occurs.
The core command register and the interrupt register
are cleared. The decoder goes into idle mode.
CK_CMD :
Address : 0x3A (58)
Type : WO - DBO
Software Reset : 1
Hardware Reset : 1
Description :
After a soft reset, user must write 0 in CK_CMD to run
the core clock of the chip. This will begin the boot of
the chip, and so get it out of its idle state.
DEC_SEL :
Address : 0x55 (85)
Type : RW - DEC
Software Reset : 0
b7 b6 b5 b4 b3 b2 b1 b0
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Bit FORMAT
0 0: valid data byte swapped.
1: valid data not byte swapped.
1 0: ID3 tag not checked
1: ID3 tag checked
other reference for counting sector in
minute.
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Bit FORMAT
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STA016T

Mfr. #:
Manufacturer:
STMicroelectronics
Description:
IC DECODER AUDIO 2.5 64TQFP
Lifecycle:
New from this manufacturer.
Delivery:
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