KS58555 Overview
Pin No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Symbol R5 R1 R2 R3 R4 HS M/B MDS/DRS OSCI OSCO C5 HDO VDD VSS TONE X’ MUTE DP C1 C2 C3 C4 HFO O Hands-Free Control Output I Column Key Input I I I I O I O S S O O O Hook Switch Make/Break Select.