ocr: INTEGRATED CIRCUIT TOSHIBA T6721A, T6772 TECHNICAL DATA T6684 (2) Manual control type RESET SW LPF VDD * JAUDIO AMP * DAO ACT SYNTRESIZING CONDITION SETTING PIN T6721A T6772 or (FILED AT VDD OR OND) T6684 o M-START DI MANUAL START SW As T6721A LSI has a built-in voltage type DA converter, it is necessary to extemally provide LPF (low-pass filter) and AUDIO AMP as shown in the above diagram. (3) Block diagram of each LSI ICL APD DAO Vop OND CK1 TIMING PA CONVERTER d2 CIRCUIT CE2-4 ROM ADRRST. ROMRST CE - PD.ALD.DTND RE VOICE WH CPU BYNTHESIZING e ses TIMINO CIRCUIT LF CIRCUIT Los. CUIT CIR- DI ...
