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DA7280 Datasheet(PDF) 69 Page - Renesas Technology Corp |
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DA7280 Datasheet(HTML) 69 Page - Renesas Technology Corp |
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69 / 80 page  DA7280-Automotive Wideband LRA/ERM Haptic Driver for Automotive Applications Datasheet Revision 1.4 01-Mar-2022 CFR0011-120-00 69 of 79 © 2022 Renesas Electronics Table 62: FRQ_LRA_PER_ACT_H (0x0046) Bit Mode Symbol Description Reset [7:0] RO LRA_PER_ACTUA L_H MS-bits of the actual LRA resonant period based on half- period, see Section 5.5.The following formula describes the output: ������������������ ������������������������������������ (������������) = 1333.32 × 10−9 × (128 × ������������������_������������������_������������������������������������_������ + ������������������_������������������_������������������������������������_������) 0x21 Table 63: FRQ_LRA_PER_ACT_L (0x0047) Bit Mode Symbol Description Rese t [6:0] RO LRA_PER_ACTU AL_L LSBs of the actual LRA resonant period based on half- period, see Section 5.5.The following formula describes the output: ������������������ ������������������������������������ (������������) = 1333.32 × 10−9 × (128 × ������������������_������������������_������������������������������������_������ + ������������������_������������������_������������������������������������_������) 0x4F Table 64: FRQ_PHASE_H (0x0048) Bit Mode Symbol Description Reset [7:0] RW DELAY_H Used during custom waveform operation, see Section 5.7.5. Only use the following settings, all other settings are reserved: 0x0 = Setting for wideband mode 0x25 = Setting for closed-loop frequency tracking mode 0x25 Table 65: FRQ_PHASE_L (0x0049) Bit Mode Symbol Description Reset [7] RW DELAY_FREEZE Used during custom waveform operation. Set to 1 only in wideband mode with frequency tracking disabled, see Section 5.7.5 0x0 = Setting for closed-loop frequency tracking mode 0x1 = Setting for wideband mode 0x0 [2:0] RW DELAY_SHIFT_L Used during custom waveform operation, see Section 5.7.5. Only use the following settings, all other settings are reserved: 0x0 = Setting for wideband mode 0x5 = Setting for closed-loop frequency tracking mode 0x5 Table 66: FRQ_CTL (0x004C) Bit Mode Symbol Description Reset [1] RW FREQ_TRACKING _AUTO_ADJ Enables the auto-scaling of the frequency tracking proportional coefficient, see Section 5.7.1. 0x0 = No auto-scaling 0x1 = Auto-scaling 0x1 |
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