STA310 STMicroelectronics, STA310 Datasheet - Page 61

• 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

Type: RW
Software Reset: NC
Hardware Reset: UND
Description:
6 output configurations are provided that redirects
bass on subwoofer channel, and applies some filters
on channels.
Note: 1. In configuration 3 with subwoofer enabled, the output of
LFE_BYOP 0; LFE channel is clear
OCFG[2:0]
BOOST
Bitfield
the subwoofer is 10dB greater than expected. Therefore
when using this mode, the subwoofer output level needs
to be attenuated 10dB in order to match the subwoofer
output levels of other bass management configurations.
In general be carefull while using the boost option since
it has the potential of causing the woofer output to over-
load
(1)
0
1
2
3
4
5
6
Channel level, enables boost:
if OCFG_num = 2 :
When configuration = 3 :
1: LFE channel is bypassed
conf
(1)
0 : No +12dB boost on left and right channels
1 : +12dB boost on left and right channels
If sub-woofer is output :
If sub-woofer is not output :
0 : No +4dB boost on all channels
1 : +4dB boost on all channels
0 : No +8dB boost on all channels
1 : +8dB boost on all channels
Meaning
SIMP
LSW
BYP
LLR
SLP
ALL
Bass management configuration according to the bass direction scheme from
Dolby. For configurations 2,3,4 the subwoofer can be output is bit LFE asset to
high. For all other configurations, the LFE bit has no effect.
All channels are rounded according to the selected output precision, (24b -> 16b,
24 -> 18b.) and scaled (volume control) only.
Low frequencies are extracted from the six input channels and redirected to the
subwoofer. SUB = LP(L+R+Ls+Rs+C+LFE).Low frequencies are removed from all
channels L = HP(L), R = HP(R), C = HP(C), Ls = HP(Ls), Rs = HP(Rs).
Low frequencies are extracted from C, LFE, Ls and Rs channels and redirected to
left and right channels: C = HP (C), Rs = HP (Rs), Ls = HP(Ls), L = L + LP
(C+LFE+Ls+Rs), R = R + LP(C+LFE+Ls+Rs). If subwoofer is output, SUB = LP
(LFE+C+Ls+Rs).
Low frequencies are redirected to the left, right and surround channels or cab be
output on the subwoofer.
If sub-woofer is output, SUB = LFE, L = L + LP(C), R = R + LP(C), Ls = Ls, Rs = Rs
If sub-woofer is not output, L = L + LP(C) + LFE, R = R + LP(C) + LFE, Ls = Ls +
LFE, Rs = Rs + LFE.
Simplified configuration. Low frequencies are exrtacted from C, Ls, Rs and LFE.
If subwoofer is output, SUB = LP(C+Ls+Rs) + LFE, L = L, R = R.
If sub-woofer is not output, SUB = LFE, L = L + (C+Ls+Rs), R = R + (C+Ls+Rs).
BYPASS, All channels are directly routed to PCM outputs.
configuration 1 without filters.
The description is provided in the output configura-
tion section.
This register is used to indicate the output configura-
tion chosen.
DWSMODE
- LP means Low pass filter
- HP means High pass filter
Description
STA310
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