SM5956A

www.DataSheet4U.com SM5956A 6-channel Asynchronous Sample Rate Converter OVERVIEW The SM5956A is a digital audio signal, asynchronous sample rate converter LSI. It reads 6-channel 16/20/24bit word length input data, and 16/20/24-bit word length output data. It also features a built-in digital deemphasis filter, direct muting and digital audio interface output. FEATURES Functions I PINOUT (Top view) OMOD0 OMOD1 OWL0 OWL1 BCKO LRCO DITO 26 I I I I I I I I I I I I I I L/R 6-channel processing (2-channel stereo, 3-system processing) Input sample rate range: 10kHz to 200kHz Output sample rate range: 30kHz to 50kHz Operating sample rate conversion ratio (fso/fsi)*1 0.45 to 4.41 (SCKSLN = L, 512fso operation) 0.225 to 4.41 (SCKSLN = H, 768fso operation) *1 : fsi = input sample rate fso = output sample rate Asynchronous input timing and output timing clock inputs System clock input Input system clock: 1fsi (LRCI) Output-system clock: 512fso/768fso (input on SCK) Deemphasis filter function IIR filter structure 44.1kHz, 48kHz, 32kHz input sample rate fsi compatible Direct mute function Through mode Input data passed directly to the outputs Digital audio interface output DIA input data undergoes sample rate conversion and is output biphase mark encoded Output data clocks (LRCO, BCKO) LRCO rate: 1fso BCKO rate: 64fso (SCKSLN = L, 512fso operation) 48fso (SCKSLN = H, 768fso operation) Slave mode: Data is output at a rate dictated by an externally input si...