MSP3410D datasheet(34/83 Pages) MICRONAS

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MSP 34x0D

PRELIMINARY DATA SHEET

Micronas

Table 6–15: Sequences to initialize and start the MSP 34x0D

LOAD_SEQ_1/2: General Initialization

General Programming Mode

Demodulator Short Programming

Write into MSP 34x0D:

1. AD_CV

2. FIR1

3. FIR2

4. MODE_REG

5. DCO1_LO

6. DCO1_HI

7. DCO2_LO

8. DCO2_HI

Write into MSP 34x0D:

For example: Addr: 0020hex, Data 0008hex

Alternatively, for terrestrial reception, the Autodetect

feature can be applied.

AUDIO PROCESSING INIT

Initialization of Audio Baseband Processing section, which may be customer-dependent

(see section 7. on page 37).

NICAM_WAIT: Automatic start of the NICAM Decoder if Bit[6] of MODE_REG is set to 1

1. Wait at least 0.25 s

NICAM_CHECK: Read NICAM specific information and check for presence, operation mode, and quality of

NICAM signal.

Read out of MSP 3410D:

1. C_AD_BITS

2. CONC_CT or ERROR_RATE; if AUTO_FM is active, reading of CONC_CT or ERROR_RATE can be omitted.

Evaluation of C_AD_BITS and CONC_CT or ERROR_RATE in the CCU (see section 6.6. on page 31).

If necessary, switch the corresponding sound channels within the audio baseband processing section.

FM_WAIT: Automatic start of the FM identification process if Bit[6] of MODE_REG is set to 0.

1. Ident Reset

2. Wait at least 0.5 s

FM_IDENT_CHECK: Read FM specific information and check for presence, operation mode, and quality of dual-

carrier FM.

Read out of MSP 34x0D:

1. Stereo detection register (DSP register 0018hex, high part)

Evaluation of the stereo detection register (see section 7.6.1. on page 50).

If necessary, switch the corresponding sound channels within the audio baseband processing section.

LOAD_SEQ_1: Reinitialization of Channel 1 without affecting Channel 2

Write into MSP 34x0D:

1. FIR1

(6 x 8 bit)

2. MODE_REG

(12 bit)

3. DCO1_LO

(12 bit)

4. DCO1_HI

Write into MSP 34x0D:

For example: Addr: 0020hex, Data: 0003hex

PAUSE: Duration of “Pause” determines the repetition rate of the NICAM or the FM_IDENT check.

Note: If downward-compatibility to the MSP 34x0B is required, the MSP 34x0D may be programmed

according to the MSP 34x0B data sheet.

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