SM5859AF

2-channel processing
Serial data input•2s complement, 16-bit/MSB first, rear-packedformat
System clock input•384fs (16.9344 MHz)
Anti-shock memory controller
ADPCM compression method•4-level compression mode selectable4-bit compression mode 2.78 s/Mbit5-bit compression mode 2.22 s/Mbit6-bit compression mode 1.85 s/MbitFull-bit non compression mode 0.74 s/Mbit•4 external DRAM configurations selectable2*4M DRAM (1M*4 bits)1*4M DRAM (1M*4 bits)2*1M DRAM (256K*4 bits)1*1M DRAM (256K*4 bits)
Compression mode selectable
Microcontroller interface•Serial command write and state read-out•Data residual quantity detector:15-bit operation, 16-bit output•Digital attenuatorFull-bit setting•Soft attenuator functionNoiseless attenuation-level switching(256- step switching in 23 ms max.)•Soft mute functionMute ON in 23 ms max.Direct return after soft mute release•Forced mute
Extension I/OMicrocontroller interface for external controlusing 5 extension I/O pins
+2.7 to +5.5 V wide operating voltage range
Schmitt inputsAll input pins (including I/O pins) except CLK(system clock)
Reset signal noise eliminationApproximately 3.8 µs or longer (65 systemclock pulses) continuous LOW-level reset
44-pin QFP package (0.8 mm pin pitch)