Datasheet

73M2901CE Data Sheet DS_2901CE_031
8 Rev. 3.4
3.4 External Interrupt Pins
Pin Name Pin Number Type Description
RING 30 I External interrupt – Line interface ring detection circuitry input
DTR 28 I
External interrupt – DTE DTR signal input
3.5 Oscillator Pins
Pin Name Pin Number Type Description
OSCIN 19 I Crystal input for internal oscillator, also input for external source
OSCOUT 18 O Crystal oscillator output