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TAS2553 Datasheet(PDF) 38 Page - Texas Instruments |
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TAS2553 Datasheet(HTML) 38 Page - Texas Instruments |
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38 / 58 page  TAS2553 SLAS978B – SEPTEMBER 2013 – REVISED FEBRUARY 2014 www.ti.com 7.5.16 Register 0x0E: Battery Tracking Limiter Attack Rate and Hysteresis Time BIT NAME READ / WRITE DEFAULT DESCRIPTION 7-6 HYSTERESIS R/W 00 Hysteresis before re-arming release time 00 = No hysteresis 01 = 4.36 mV hysteresis 10 = 13.08 mV hysteresis 11 = 30.52 mV hysteresis 5 R/W 0 Write to 1 during initialization. See Initialization. 4-3 APT_DIS_VOLTAGE R/W 01 VBAT threshold below which Boost APT is disabled and the boost remains active regardless of Class-D output voltage. 00 = 2.5 V 01 = 2.7 V 10 = 2.9 V 11 = 3.1 V 2-0 ATTACK_TIME R/W 000 Attack Time 350 µs / dB per step 000 = 20 µs / dB 001 = 370 µs / dB … 110 = 2120 µs / dB 111 = 2470 µs / dB 7.5.17 Register 0x0F: Battery Tracking Limiter Release Rate READ / BIT NAME DEFAULT DESCRIPTION WRITE 7-4 R/W 00 Reserved. Write only default values. 3-0 REL_TIME R/W 0100 Release Time 105 ms / dB per step 0000 = 50 ms / dB 0001 = 155 ms / dB … 1110 = 1520 ms / dB 1111 = 1625 ms / dB 7.5.18 Register 0x10: Battery Tracking Limiter Integration Count Control Limiter integration affects how the AGC state machine interprets the AGC output voltage trigger threshold. Increasing the integration count requires more AGC output peaks to exceed the limiter threshold before the limiter changes its gain. READ / BIT NAME DEFAULT DESCRIPTION WRITE 7-6 UP_DWN_RATIO R/W 00 Control Integration Count Up/Down Ratio The UP_DWN_RATIO sets the ratio of the addition to and the subtraction from the integration count, meaning that the input has to be below the limit threshold for 4UP_DWN_RATIO counts before the integration count is reduced. 5-0 INT_CNT R/W 00 0000 Integration Count Control Register Larger values increase filtering before the attack and decay time are triggered. 38 Submit Documentation Feedback Copyright © 2013–2014, Texas Instruments Incorporated Product Folder Links: TAS2553 |
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