Maxim-integrated 73M1822/73M1922 Implementers Guide Manuel d'utilisateur télécharger pdf (Page 23)

UG_1x22_052 73M1822/73M1922 Implementer’s Guide

Rev. 1.0 23

6.4 RGDT and RGMON Interrupts

The triggering of an RGDT or RGMON interrupt indicates that the device has detected an AC signal on

the line greater than the threshold programmed through the RGTH register.

0x05

ENGPIO7

ENGPIO6

ENGPIO5

ENGPIO4

ENAPOL

ENDET

ENSYNL

ENRGDT

Write X X X X 1 X X 1

0x0E

FRCVCO

PWDNPLL

Res

RGTH1

RGTH0

Write X X X X X X VAL1[1:0]

Set the ENRGDT bit in Register 0x05 to enable the RGDT and RGMON interrupts.

Begin

1. If RGDT = 1 (IntSrc = xxxx_xxx1) or RGMON = 1 (IntSrc = xxxx_1xxx), goto Ring Detection and Line

Polarity Reversal (see Section 4.3).

End

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Maxim-integrated 73M1822/73M1922 Implementers Guide Manuel d'utilisateur Page 23