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BU2616 Datasheet(PDF) 5 Page - Rohm |
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BU2616 Datasheet(HTML) 5 Page - Rohm |
5 / 5 page FExternal dimensions (Units: mm) 123 Audio ICs BU2616F (7) GT: Control of frequency measurement time 0: 32ms 1: 64ms (8) SW: If this bit is set to ON while AMIN is selected, swallow counter division is possible. (9) PL PH: Control of charge pump output PL = 0, PH = 0 PD1, PD2 go to PLL operation. PL = 1, PH = 0 PD1, PD2 go to LO level. PL = 0, PH = 1 PD1, PD2 go to HI level. PL = 1, PH = 1 PD1, PD2 go to LO level. (10) TS: Test data (0) is input FIntermediate frequency detection circuit and the FDO output. (1) Structure (2) How the IF frequency detection circuit operates When control data CT is set to ON, the counter and the amp go into operation. When CT equals 0, the amp input pulldown counter is reset. (3) Explanation of the DO ∗1 When the IF counter is OFF (CT = 0), SD input ap- pears at the DO. ∗2 When the IF counter is set to ON (CT = 1), the con- trol system keeps it at LO level until the measure- ment is finished. ∗3 After the measurement is finished, it goes to HI level if it is within the range of input frequency settings, and is kept at LO level if it is beyond the range of in- put frequency settings. When CT = 0, it returns to the conditions described under paragraph ∗1. |
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Similar Description - BU2616 |
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