KS58555B Description
Pin No 1 2 3 4 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 Mode & Dial Pulse Ratio Select Pin Oscillator.