LC78621E Datasheet, PDF (27/34 Pages) Sanyo Semicon Device – Compact Disc Player DSP

LC78621E
• Recommended crystal and ceramic oscillator elements
Manufacturer
Citizen Watch Co., Ltd.
(crystal oscillator elements)
TDK, Ltd.
(ceramic oscillator elements)
Product No.
CSA-309 (16.9344 MHz)
FCR 16.93M2G (16.93 MHz)
FCR 16.93MCG (16.93 MHz)
Load capacitance
C1/C2 (C1 = C2)
Damping resistor
Rd
6 pF to 10 pF (±10%)
0Ω
15 pF (±10%)
100 Ω (±10%)
30 pF (Includes built-in capacitors) 47 Ω (±10%)
Since the conditions for the load capacitors Cin and Cout used varies with the printed circuit board, this circuit
must be tested on the printed circuit board actually used.
25. 16M and 4.2M Pins; Pin 71: 16M, pin 72: 4.2M
In normal- and double-speed playback modes, the 16M pin buffer outputs the 16.9344 MHz external crystal oscillator
16.9344 MHz signal. The 4.2M pin supplies the LA9231M or LA9231M system clock, normally outputting a 4.2336
MHz signal. When the oscillator is turned off both these pins will be fixed at either high or low.
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