SI3056-KS Datasheet(数据表) 50 Page - Silicon Laboratories

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zoom inzoom out 50 pageSi3056Si3018/19/1050Rev. 1.05Reset settings = 0000_0011Register 2. Control 2BitD7D6D5D4D3D2D1D0NameINTEINTPWDTENRDIHBERXETypeR/WR/WR/WR/WR/WR/WBitNameFunction7INTEInterrupt Pin Enable.0=The AOUT/INT pin functions as an analog output for call progress monitoring purposes.1=The AOUT/INT pin functions as a hardware interrupt pin.6INTPInterrupt Polarity Select.0=The AOUT/INT pin, when used in hardware interrupt mode, is active low.1=The AOUT/INT pin, when used in hardware interrupt mode, is active high.5Reserved Returns to zero.4WDTENWatchdog Timer Enable.When set, this bit can only be cleared by a hardware reset. The watchdog timer monitorsregister accesses. If no register accesses occur within a 4 second window, the DAA is put intoan on-hook state. A write of a DAA register restarts the watchdog timer counter. If thewatchdog timer times out, the OH and OHE bits are cleared, placing the DAA into an on-hookstate. Setting the OH bit or setting the OHE bit and asserting the OFHK pin places the DAAback into an off-hook state.0 = Watchdog timer disabled.1 = Watchdog timer enabled.3Reserved Returns to zero.2RDIRing Detect Interrupt Mode.This bit operates in conjunction with the RDTM and RDTI bits. This bit is selected if one or twointerrupts are generated for every ring burst.0 = An interrupt is generated at the beginning of every ring burst.1 = An interrupt is generated at the beginning and end of every ring burst. The interrupt at thebeginning of the ring burst must be serviced (by writing a 0 to the RDTI bit) before the end ofthe ring burst for both interrupts to occur.1HBEHybrid Enable.0 = Disconnects hybrid in transmit path.1 = Connects hybrid in transmit path.0RXEReceive Enable.0 = Receive path disabled.1 = Enables receive path.