SI3050 datasheet(77/128 Pages) SILABS

77 / 128 page

Si3050 + Si3011/18/19

Rev. 1.5

Reset settings = 0000_0000

Bit

D7D6D5

D3D2D1D0

Name

OVL

DOD

OPD

Type

RRR

Bit

Name

Function

7:3

Reserved Read returns zero.

2OVL

Receive Overload Detect.

This bit has the same function as ROV (Register 17), but clears itself after the overload is

removed. See “5.22.Receive Overload Detection” on page 35. This bit is only masked by the

off-hook counter and is not affected by the BTE bit.

0 = Normal receive input level.

1 = Excessive receive input level.

1DOD

Recal/Dropout Detect.

When the line-side device is off-hook, it is powered from the line itself. This bit will read 1

when loop current is not flowing. For example, if this line-derived power supply collapses,

such as when the line is disconnected, this bit is set to 1. Additionally, when on-hook, and the

line-side device is enabled, this bit is set to 1.

0 = Normal operation.

1 = Line supply dropout detected when off-hook.

0OPD

Overload Protect Detect.

This bit is used to indicate that the DAA has detected a loop current overload. The detector fir-

ing threshold depends on the setting of the ILIM bit (Register 26).

OPD

ILIM

Overcurrent Threshold

Overcurrent Status

160 mA

No overcurrent condition exists

60 mA

No overcurrent condition exists

160 mA

Overcurrent condition has been detected

60 mA

Overcurrent condition has been detected

Si3050 Datasheet(PDF) 77 Page - Silicon Laboratories

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