YMU757B Datasheet, PDF (7/43 Pages) YAMAHA CORPORATION – MA-1C

YMU757B
Block diagram
SCLK
SYNC
SDIN
/IRQ
/RST
Timing Generator
HPVOL
32step
Serial
I/F
Register
FIFO
16b x 32w
FM
Synthesizer
4Sound signals generated
simultaneously
DAC
FMVOL
32step
VREF
+_-
VREF
SPVOL
32step
AMP
VREF
SPVSS
EQ1
EQ2
EQ3
SPOUT
SPOUT
Concerning AIN signal inputted into equalizer circuit
As this design presupposes the use of this LSI for the "hands-free", it is possible to process the FM sound and call sound by
analog mixing in the equalizer circuit and output the resulting sound through the speaker.
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