SI3050 datasheet(64/128 Pages) SILABS

64 / 128 page

Si3050 + Si3011/18/19

Rev. 1.5

Reset settings = 0000_0011

Bit

D7D6D5

D1D0

Name

INTE

INTP

WDTEN

RDI

HBE

RXE

Type

R/W

Bit

Name

Function

7INTE

Interrupt 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.

6INTP

Interrupt 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.

Reserved Read returns zero.

4WDTEN

Watchdog Timer Enable.

0 = Watchdog timer disabled.

1 = Watchdog timer enabled. When set, this bit can be cleared only by a hardware reset. The

watchdog timer monitors register access. If no register access occurs within a 4 s window, the

DAA is put into an on-hook state. A read or write of a DAA register restarts the watchdog timer

counter. If the watchdog timer times out, the OH bit is cleared, placing the DAA into an

on-hook state. Setting the OH bit places the DAA back into an off-hook state.

Reserved Read returns zero.

2RDI

Ring Detect Interrupt Mode.

This bit operates in conjunction with the RDTM and RDTI bits. This bit selects whether one or

two interrupts 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 the

beginning of the ring burst must be serviced (by writing 0 to the RDTI bit) before the end of the

ring burst in order for both interrupts to occur.

1HBE

Hybrid Enable.

0 = Disconnects hybrid in transmit path.

1 = Connects hybrid in transmit path.

0RXE

Receive Enable.

0 = Receive path disabled.

1 = Enables receive path.

Si3050 Datasheet(PDF) 64 Page - Silicon Laboratories

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