PRELIMINARY DATA SHEET
MSP 3400C
7. Programming the Audio Processing Part
7.1. Summary of the DSP Control Registers
Control registers are 16 bit wide. Transmissions via I2C
bus have to take place in 16 bit words. Single data en-
tries are 8 bit. Some of the defined 16 bit words are di-
vided into low and high byte, thus holding two different
control entities. All control registers are readable.
Note: Unused parts of the 16 bit registers must be zero.
Table 7–1: DSP Control Registers
Name
I2C Bus High/ Adjustable Range, Operational Modes
Address Low
Reset Mode
Volume loudspeaker channel
Volume / Mode loudspeaker channel
Balance loudspeaker channel [L/R]
Balance Mode loudspeaker
0000hex H
L
0001hex H
L
[+12 dB ... –114 dB, MUTE]
1/8 dB Steps, Reduce Volume / Tone Control
[0..100 / 100 % and vv][–127..0 / 0 dB and vv]
[Linear mode / logarithmic mode]
MUTE
00hex
100%/100%
linear mode
Bass loudspeaker channel
Treble loudspeaker channel
Loudness loudspeaker channel
Loudness Filter Characteristic
0002hex H
0003hex H
0004hex H
L
[+20 dB ... –12 dB]
[+15 dB ... –12 dB]
[0 dB ... +17 dB]
[NORMAL, SUPER_BASS]
0 dB
0 dB
0 dB
NORMAL
Spatial effect strength loudspeaker ch. 0005hex H
Spatial effect mode/customize
L
[–100%...OFF...+100%]
[SBE, SBE+PSE]
OFF
SBE+PSE
Volume headphone channel
Volume / Mode headphone channel
Volume SCART channel
Volume / Mode SCART channel
0006hex H
L
0007hex H
L
[+12 dB ... –114 dB, MUTE]
1/8 dB Steps, Reduce Volume / Tone Control
[00hex ... 7Fhex],[+12 dB ... –114 dB, MUTE]
[Linear mode / logarithmic mode]
MUTE
00hex
00hex
linear mode
Loudspeaker channel source
Loudspeaker channel matrix
0008hex H
L
[FM, NICAM, SCART, I2S1, I2S2]
[SOUNDA, SOUNDB, STEREO, MONO...]
FM
SOUNDA
Headphone channel source
Headphone channel matrix
0009hex H
L
[FM, NICAM, SCART, I2S1, I2S2]
[SOUNDA, SOUNDB, STEREO, MONO...]
FM
SOUNDA
SCART1 channel source
SCART1 channel matrix
000ahex H
L
[FM, NICAM, SCART, I2S1, I2S2]
[SOUNDA, SOUNDB, STEREO, MONO...]
FM
SOUNDA
I2S channel source
000bhex H
[FM, NICAM, SCART, I2S1, I2S2]
FM
I2S channel matrix
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ Quasi-peak detector source
L
000chex H
[SOUNDA, SOUNDB, STEREO, MONO...]
[FM, NICAM, SCART, I2S1, I2S2]
SOUNDA
FM
Quasi-peak detector matrix
L
[SOUNDA, SOUNDB, STEREO, MONO...]
SOUNDA
Prescale SCART
Prescale FM
FM matrix
000dhex H
000ehex H
L
[00hex ... 7Fhex]
[00hex ... 7Fhex]
[NO_MAT, GSTEREO, KSTEREO]
00hex
00hex
NO_MAT
Micronas
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