MSP3411G Micronas, MSP3411G Datasheet - Page 44

• Manufacturer Part Number: MSP3411G
• Description: (MSP34x1G) Multistandard Sound Processor Family
• Manufacturer: Micronas

MSP 34x1G
3.4. Programming Tips
This section describes the preferred method for initial-
izing the MSP 34x1G. The initialization is grouped into
four sections: analog signal path, demodulator input,
input processing for SCART and I
cessing. See Fig. 2–1 on page 9 for a complete signal
flow.
SCART Signal Path
1. Select analog input for the SCART baseband pro-
2. Select the source for each analog SCART output
Demodulator Input
For a complete setup of the TV sound processing from
analog IF input to the source selection, the following
steps must be performed:
1. Set MODUS register to the preferred mode and
2. Choose preferred prescale (FM and NICAM) values.
3. Write STANDARD SELECT register.
If Automatic Sound Select is not active, the following
step has to be done repeatedly:
4. Choose FM matrix according to the sound mode
SCART and I
1. Select preferred prescale for SCART.
2. Select preferred prescale for I
Output Channels
1. Select the source channel and matrix for each out-
2. Set audio baseband processing.
3. Select volume for each output channel.
44
(set to 0 dB after RESET).
put channel.
cessing (SCART DSP Input Select) by means of the
ACB register.
(SCART Output Select) by means of the ACB regis-
ter.
Sound IF input.
indicated in the STATUS register.
2
S Inputs
2
S inputs
2
S, and output pro-
3.5. Examples of Minimum Initialization Codes
Initialization of the MSP 34x1G according to these list-
ings reproduces sound of the selected standard on the
loudspeaker output. All numbers are hexadecimal. The
examples have the following structure:
1. Perform an I
2. Write MODUS register
3. Set Source Selection for loudspeaker channel
4. Set Prescale
5. Write STANDARD SELECT register.
6. Set Volume loudspeaker channel to 0 dB.
3.5.1. SCART1 Input to Loudspeaker in
<80 00 00 00 80 00>
<80 00 00 00 00 00>
<80 12 00 08 02 20>
<80 12 00 0d 19 00>
<80 12 00 00 73 00>
3.5.2. SCART1 Input to Loudspeaker in
<80 00 00 00 80 00>
<80 00 00 00 00 00>
<80 12 00 08 02 20>
<80 12 00 0d 19 00>
<80 12 00 00 73 00>
<80 12 00 48 01 00>
<80 12 00 49 40 00>
<80 12 00 4a 54 00>
<80 12 00 4b 00 60>
<80 12 00 4d 00 00>
3.5.3. Noise Sequencer for 3D-PANORAMA Sound
// switch into 3D-PANORAMA sound (s.a.). Then:
<80 12 00 4d 80 a0>
[wait for 2 seconds]
<80 12 00 4d 80 b0>
[wait for 2 seconds]
<80 12 00 4d 80 c0>
[wait for 2 seconds]
<80 12 00 4d 80 d0>
[wait for 2 seconds]
// switch back to normal operation
<80 12 00 4d 00 00>
(with Automatic Sound Select).
(with matrix set to STEREO).
(FM and/or NICAM and dummy FM matrix).
Stereo Sound
3D-PANORAMA Sound
2
C controlled reset of the IC.
// reset
// source loudspeaker = scart, stereo
// prescale scart
// volume main = 0dB
// reset
// source loudspeaker = scart, stereo
// prescale scart
// volume main = 0dB
// virtual surround sound: on
// Surround spatial effect = 50%
// panorama sound effect = 66%
// Surround mode = 3d_panorama
// Noise Sequencer = off
// noise L
// noise C
// noise R
// noise S
// Noise Sequencer = off
PRELIMINARY DATA SHEET
MICRONAS INTERMETALL