YM3815-H

The YM3815-H is a compact disc player signal processor (SGP) and servo controller CMOS LSI developed by Yamaha. YM3815-H carries out the digital filtering and other signal processing useful for optical pick-up EFM signal demodulation and erroneous signal detection and correction and improved audio quality, as well as all servo control (e.g. focus, disc, tracking, feed).It is used in conjunction with serial input DAC PCM56 or PCM57 (Burr-Brown).There are some features as follows.First is silicon gate CMOS construction.The second is 5 V single power supply.The last one is 80 pin flat plastic package (saves space).

What comes next is about the absolute maximum ratings of YM3815-H.The VDD (power supply voltage) is from -0.3 V to +7.0 V.The VI (input voltage) is from -0.3 V to VDD+0.5 V.The Top (operating temperature) is from -20 to +75.The Tstg (storage temperature) is from -50 to +125.Then is about the recommended operating conditions.The minimum VDD (power supply voltage) is 4.75 V,the typical is 5.00 V and the maximum is 5.25 V.The minimum Top (operating temperature) is 0,the typical is 25 and the maximum is 70.

The following is about the electrical characteristics of YM3815-H.The typical IDD (supply current) is 25 mA and the maximum is 40 mA at VDD=5 V.The minimum VOH (high level output voltage) is 4.0 V at IOH=20A.The maximum VOL (low level output voltage) is 0.4 V at IOL=1 mA.The minimum VIL (low level input voltage) is 0 V and the maximum is 0.4 V.The minimum VIH1 (high level input voltage) is 3.5 V and the maximum VIL1 (low level input voltage) is 1.5 V applicable to terminals 3.VCOI, 8.EFMI, 14.FZC, 15.FRF, 16.HF, 17.TER.The minimum VIH2 (high level input voltage) is 2.0 V and the maximum VIL2 (low level input voltage) is 0.8 V applicable to terminals 33.RCK, 38.DIN, 39.SCK, 54.D8, 61.DI.