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MSP3410D Datasheet(PDF) 46 Page - Micronas |
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MSP3410D Datasheet(HTML) 46 Page - Micronas |
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46 / 83 page  MSP 34x0D PRELIMINARY DATA SHEET 46 Micronas 7.3.11. FM/AM Prescale For the High Deviation Mode, the FM prescaling val- ues can be used in the range from 14hex to 30hex. Please consider the internal reduction of 6 dB for this mode. The FIR-bandwidth should be selected to 500 kHz. 1) Given deviations will result in internal digital full- scale signals. Appropriate clipping headroom has to be set by the customer. This can be done by decreasing the listed values by a specific factor. 2) In the mentioned SIF-level range, the AM-output level remains stable and independent of the actual SIF-level. In this case, only the AM degree of audio signals above 40 Hz determines the AM-output level. 7.3.12. FM Matrix Modes (see also Table 4–1) NO_MATRIX is used for terrestrial mono or satellite stereo sound. GSTEREO dematrixes [(L+R)/2, R] to [L, R] and is used for German dual carrier stereo sys- tem (Standard B/G). KSTEREO dematrixes [(L+R)/2, (L −R)/2] to [L, R] and is used for the Korean dual car- rier stereo system (Standard M). 7.3.13. FM Fixed Deemphasis 7.3.14. FM Adaptive Deemphasis Volume Prescale FM (Normal FM Mode) 000Ehex H OFF 0000 0000 00hex RESET Maximum Volume (28 kHz deviation 1) recommended FIR- bandwidth: 130 kHz) 0111 1111 7Fhex Deviation 50 kHz1) recommended FIR- bandwidth: 200 kHz 0100 1000 48hex Deviation 75 kHz1) recommended FIR- bandwidth: 200 or 280 kHz 0011 0000 30hex Deviation 150 kHz1) recommended FIR- bandwidth: 380 kHz 0001 1000 18hex Maximum deviation 192 kHz1) recommended FIR- bandwidth: 380 kHz 0001 0011 13hex Prescale for adaptive deemphasis WP1 recommended FIR- bandwidth: 130 kHz 0001 0000 10hex Volume Prescale FM (High Deviation Mode) 000Ehex H OFF 0000 0000 00hex RESET Deviation 150 kHz1) recommended FIR- bandwidth: 380 kHz 0011 0000 30hex Maximum deviation 384 kHz1) recommended FIR- bandwidth: 500 kHz 0001 0100 14hex Volume Prescale AM 000Ehex H OFF 0000 0000 00hex RESET SIF input level: 0.1 Vpp − 0.8 Vpp 1) 2) 0.8 Vpp − 1.4 Vpp 1) 0111 1100 7Chex <7Chex Note: For AM, the bit MODE_REG[15] must be 1 FM Matrix 000Ehex L NO MATRIX 0000 0000 00hex RESET GSTEREO 0000 0001 01hex KSTEREO 0000 0010 02hex Deemphasis FM 000Fhex H 50 µs 0000 0000 00hex RESET 75 µs 0000 0001 01hex J17 0000 0100 04hex OFF 0011 1111 3Fhex FM Adaptive Deemphasis WP1 000Fhex L OFF 0000 0000 00hex RESET WP1 0011 1111 3Fhex |
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