IL91214B Overview
Description
Hook switch input MODE IN = VDD: pulse mode, 10 Hz, М/В = 1/2, MODE IN = VSS: tone mode, MODE IN = floating mode, 20 Hz, М/В = 1/2 Oscillator input Oscillator output Ground Supply output Tone dialing output Dialing transmission mute output Mode output pin Key-in tone output Dialing pulse output Keyboard column input Keyboard column input Keyboard column input Keyboard row input Keyboard row input Keyboard row input Keyboard row input O SCI 03 O SCO 04 IL91214A 1 2 1 2 14 13 12 11 Vss 05 Vdd 06 TO NE 07 X M IT M U T E 10 09 08 3 4 5 6 7 8 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 HK 01 MODE IN 02 OSCI 03 OSCO 04 Vss 05 Vdd 06 TONE 07 18 17 16 R4 R3 R2 R1 C3 C2 C1 DP KT 15 14 13 12 11 10 XMIT MUTE 08 MODE OUT 09 9 10 11 12 13 14 15 16 OSCI OSCO VSS VDD TONE XMIT MUTE MODE OUT KT DP C1 C2 C3 R1 R2 R3 R4 Keyboard Assignment 1 4 7 */T 2 5 8 0 3 6 9 # F1 F2 P RD IL91214B R1 R2 R3 R4 C1 C2 C3 C4 1. */T – At Pulse mode this key works as Pulse -> DTMF key (T key), at DTMF mode the key works as *key.
