STA310 STMicroelectronics, STA310 Datasheet - Page 63

• Manufacturer Part Number: STA310
• Description: IC AUDIO DECODER 6+2CH 80-TQFP
• Manufacturer: STMicroelectronics
• Type: Audio Decoderr

Specifications of STA310

• Applications: HDTV, Players, Receivers, Set-Top Boxes
• Voltage - Supply, Analog: 2.5V
• Voltage - Supply, Digital: 2.5V
• Mounting Type: Surface Mount
• Package / Case: 80-TQFP, 80-VQFP
• Audio Codec Type: MP3 Decoder
• No. Of Dacs: 3
• No. Of Input Channels: 2
• No. Of Output Channels: 6
• Adc / Dac Resolution: 32bit
• Sampling Rate: 192kHz
• Interface Type: I2C, Serial, Parallel
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8856; STA310

CHAN_IDX
Channel Index
Address: 0x67
Type: R/W
Software Reset: 4
Hardware Reset: UND
Description:
This register identifies the pair of channels and the
type of access:
CHAN_I
Bitfield value Channel pair Access
To read a volume, the register
must be set to the appropriate value. The DSP
indicates that the attenuation is readable
through registers
VOLUME1 by changing automatically the
CHAN_IDX to value 4.
To write a volume, the attenuation of the pair of
channel should be written in
VOLUME1 registers. Then the
register is written to the appropriate value. The
attenuation is updated on the next audio block
7
DX
6
Reserved
0
1
2
3
4
5
6
7
5
Left and Right write
Center and
Subwoofer
Left surround
and right
surround
reserved
no pair
selected
Left and Right read
Center and
Subwoofer
Left surround
and right
surround
4
VOLUME0 and
3
write
write
reserved
none
read
read
VOLUME0 and
2
CHAN_IDX
CHAN_IDX
CHAN_IDX
Indicates
that volume
can be read
or written
1
comment
0
9.16 Dolby Digital configuration registers
AC3_DECODE_LFE
Decode LFE
Address: 0x68
Type: R/W
Software Reset: NC
Hardware Reset: UND
Description:
When this register is set to 1, the device decodes
LFE channel (if present).
AC3_COMP_MOD
Compression mode
Address + 0x69
Type: R/W
Software Reset: NC
Hardware Reset: UND
Description:
The value of this register defines the compression
mode. In custom A mode, the dialog normalization
function is not done by the audio decoder, it has to be
done by an external analog part. In all other modes
the normalization is done by audio decoder.
7
and
changed to 4.
7
Value
0
1
2
3
6
6
CHAN_IDX value is automatically
5
5
Custom A (Analog)
Custom D (Digital)
Line Out
RF Mode
4
4
3
Meaning
3
2
1
2
STA310
1
0
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0