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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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WM8945ECS/R датащи(PDF) 104 Page - Wolfson Microelectronics plc |
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WM8945ECS/R датащи(HTML) 104 Page - Wolfson Microelectronics plc |
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104 / 169 page  WM8945 Production Data w PD, May 2011, Rev 4.1 104 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION R17 (11h) Status Flags 15 TEMP_STS 0 Thermal Sensor status 0 = Normal 1 = Overtemperature R42 (2Ah) Output ctrl 15 THERR_ACT 1 Thermal Shutdown enable 0 = Disabled 1 = Enabled When THERR_ACT = 1, then an overtemperature condition will cause the speaker outputs to be disabled. Table 69 Thermal Shutdown Control POWER ON RESET The WM8945 includes a Power-On Reset (POR) circuit, which is used to reset the digital logic into a default state after power up. The POR circuit derives its output from LDOVDD and DCVDD. The internal POR ¯¯¯ signal is asserted low when either LDOVDD or DCVDD are below minimum thresholds. The specific behaviour of the circuit will vary, depending on relative timing of the supply voltages. Typical scenarios are illustrated in Figure 48 and Figure 49. Figure 48 Power On Reset Timing – LDOVDD enabled first |
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