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TDA7541 数据表(PDF) 47 Page - STMicroelectronics |
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TDA7541 数据表(HTML) 47 Page - STMicroelectronics |
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47 / 76 page  TDA7541 Software specification 47/76 5.3 Data byte specification Table 15. Subaddress description MSB LSB Function I A4A3 A2A1 A0 0000 0 Charge pump control ---- - - 1011 1 Audio noise blanker II ---- - - 0 Page mode “OFF” 1 Page mode enable Table 16. Addr 0 TPLL charge pump control (0Bh) MSB LSB Function d7 d6 d5 d4 d3 d2 d1 d0 ICP<2:0> 0 0 0 Charge pump current = 50µA 0 0 1 Charge pump current = 0.5mA 0 1 0 Charge pump current = 1mA 0 1 1 Charge pump current = 1.5mA -- - - 1 1 0 Charge pump current = 3mA 1 1 1 Charge pump current = 3.5mA LDENA 0 Lock detector disable 1 Lock detector enable SDM 0 Stereo decoder mute disable 1 Stereo decoder mute enable LM 0 Local mode disable 1 Local mode enable ASFC 0 Weak signal mute and AGC normal mode in FM 1 Weak signal mute and AGC on hold in FM mode SEEK 0 ISS time constant at pin30 available, AM SEEK “OFF” 1 ISS time constant at pin31 available, AM SEEK “ON” |
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