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Motore di ricerca datesheet componenti elettronici |
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SI4740 Scheda tecnica(PDF) 9 Page - Silicon Laboratories |
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SI4740 Scheda tecnica(HTML) 9 Page - Silicon Laboratories |
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9 / 302 page  AN332 Rev. 1.0 9 0x2200 TX_ACOMP_ENABLE3 Enables audio dynamic range control and limiter. Default is 2 (limiter is enabled, audio dynamic range control is disabled). 0x0002 All 0x2201 TX_ACOMP_THRESHOLD Sets the threshold level for audio dynamic range control. Default is –40 dB. 0xFFD8 All 0x2202 TX_ACOMP_ATTACK_TIME Sets the attack time for audio dynamic range control. Default is 0 (0.5 ms). 0x0000 All 0x2203 TX_ACOMP_RELEASE_TIME Sets the release time for audio dynamic range control. Default is 4 (1000 ms). 0x0004 All 0x2204 TX_ACOMP_GAIN Sets the gain for audio dynamic range control. Default is 15 dB. 0x000F All 0x2205 TX_LIMITER_RELEASE_TIME3 Sets the limiter release time. Default is 102 (5.01 ms) 0x0066 All except Si4710-A10 0x2300 TX_ASQ_INTERRUPT_SOURCE Configures measurements related to signal quality metrics. Default is none selected. 0x0000 All 0x2301 TX_ASQ_LEVEL_LOW Configures low audio input level detection threshold. This threshold can be used to detect silence on the incoming audio. 0x0000 All 0x2302 TX_ASQ_DURATION_LOW Configures the duration which the input audio level must be below the low threshold in order to detect a low audio condition. 0x0000 All 0x2303 TX_ASQ_LEVEL_HIGH Configures high audio input level detection threshold. This threshold can be used to detect activity on the incoming audio. 0x0000 All 0x2304 TX_ASQ_DURATION_HIGH Configures the duration which the input audio level must be above the high threshold in order to detect a high audio condition. 0x0000 All 0x2C00 TX_RDS_INTERRUPT_SOURCE2 Configure RDS interrupt sources. Default is none selected. 0x0000 Si4711/13/21 Table 5. FM Transmitter Property Summary (Continued) Prop Name Description Default Available In Notes: 1. Digital Audio Input feature (property DIGITAL_INPUT_FORMAT and DIGITAL_INPUT_SAMPLE_RATE) is supported in FMTX component 2.0 or later. 2. RDS feature (command TX_RDS_BUFF, TX_RDS_PS and RDS properties 0x2103, 0x2C00 through 2C07) is supported in FMTX component 2.0 or later. 3. Limiter feature (LIMITEN bit in TX_ACOMP_ENABLE and property TX_LIMITER_RELEASE_TIME) is supported in FMTX component 2.0 or later. |
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