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MAX13325 Datasheet(PDF) 10 Page - Maxim Integrated Products |
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MAX13325 Datasheet(HTML) 10 Page - Maxim Integrated Products |
10 / 21 page 10 _____________________________________________________________________________________ Dual Automotive, Audio Line Drivers with I2C Control and Diagnostic Configuration Register DIAG: Set DIAG to 1 to enable diagnostic mode. Write '0' to disable diagnostic mode. ENABLE: Set ENABLE bit to 1 to enable the device. Write ‘0’ disables the device. Low on the SHDN pin overrides the ENABLE bit. MUTE: Set the MUTE bit to 1 to mute both the output channels. Output is low impedance when in mute. Low on the MUTE pin input overrides the MUTE bit. CPOFF: Set the CPOFF bit to 1 to turn off the charge pump. CHOLD pin must be externally supplied (see the VCPH parameter in the Electrical Characteristics table). Charge pump is enabled when CPOFF = 0. OLDL: Write 1 to the OLDL bit to initiate the open-load detection for the left channel. To run OLDL again, write ‘0’ and ‘1’ again. OLDR: Write 1 to the OLDR bit to initiate the open-load detection for the right channel. To run OLDR again, write ‘0’ and ‘1’ again. CPF[1:0]: Sets the frequency of the charge pump. Command Byte Register RETRYR: The right-channel power amplifier switches off after a fault condition. Write ‘1’ to turn it back on after the fault condition. RETRYL: The left-channel power amplifier switches off after a fault condition. Write ‘1’ to turn on the left-channel power amplifier after the fault condition. Table 2. Configuration Register Format Table 3. Command Byte Register Format Table 2a. Charge-Pump Frequency Bits FUNCTION ADDRESS CODE (HEX) REGISTER DATA POR STATE (HEX) D7 D6 D5 D4 D3 D2 D1 D0 Configuration Register 0x00 DIAG ENABLE MUTE CPOFF OLDL OLDR CPF1 CPF0 0x00 FUNCTION ADDRESS CODE (HEX) REGISTER DATA POR STATE (HEX) D7 D6 D5 D4 D3 D2 D1 D0 Command Byte Register 0x01 RETRYR RETRYL x x x x x x 0x00 CPF1 CPF0 FREQUENCY (kHz) 0 0 333 0 1 190 1 0 426 1 1 260 |
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