MSP3410G Micronas, MSP3410G Datasheet - Page 43

• Manufacturer Part Number: MSP3410G
• Description: Multistandard Sound Processor Family
• Manufacturer: Micronas

DATA SHEET
3.4. Programming Tips
This section describes the preferred method for initial-
izing the MSP 34x0G. The initialization is grouped into
four sections:
– SCART Signal Path (analog signal path)
– Demodulator
– SCART and I2S Inputs
– Output Channels
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
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.
4. If Automatic Sound Select is not active:
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.
Micronas
cessing (SCART DSP Input Select) by means of the
ACB register.
(SCART Output Select) by means of the ACB regis-
ter.
Sound IF input.
Choose FM matrix repeatedly according to the
sound mode indicated in the STATUS register.
(set to 0 dB after RESET).
put channel.
2
S Inputs
2
S inputs
May 27, 2003; 6251-476-1DS
3.5. Examples of Minimum Initialization Codes
Initialization of the MSP 34x0G 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. B/G-FM (A2 or NICAM)
<80 00 80 00>
<80 00 00 00>
<80 10 00 30 20 03>
<80 12 00 08 03 20>
<80 12 00 0E 24 03>
<80 12 00 10 5A 00>
<80 10 00 20 00 03>
<80 10 00 20 00 08>
<80 12 00 00 73 00>
3.5.2. BTSC-Stereo
<80 00 80 00>
<80 00 00 00>
<80 10 00 30 20 03>
<80 12 00 08 03 20>
<80 12 00 0E 24 03>
<80 10 00 20 00 20>
<80 12 00 00 73 00>
3.5.3. BTSC-SAP with SAP at Loudspeaker Channel
<80 00 80 00>
<80 00 00 00>
<80 10 00 30 20 03>
<80 12 00 08 04 20>
<80 12 00 0E 24 03>
<80 10 00 20 00 21>
<80 12 00 00 73 00>
(with Automatic Sound Select).
(with matrix set to STEREO).
(FM and/or NICAM and dummy FM matrix).
or
2
C controlled reset of the IC.
// Softreset
// MODUS-Register: Automatic = on
// Source Sel. = (St or A) & Ch. Matr. = St
// FM/AM-Prescale = 24
// NICAM-Prescale = 5A
// Standard Select: A2 B/G or NICAM B/G
// Loudspeaker Volume 0 dB
// Softreset
// MODUS-Register: Automatic = on
// Source Sel. = (St or A) & Ch. Matr. = St
// FM/AM-Prescale = 24
// Standard Select: BTSC-STEREO
// Loudspeaker Volume 0 dB
// Softreset
// MODUS-Register: Automatic = on
// Source Sel. = (St or B) & Ch. Matr. = St
// FM/AM-Prescale = 24
// Standard Select: BTSC-SAP
// Loudspeaker Volume 0 dB
FM-Matrix = MONO/SOUNDA
FM-Matrix = Sound A Mono
FM-Matrix = Sound A Mono
MSP 34x0G
hex
hex
hex
hex
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,
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