AK8858 Datasheet, PDF (14/96 Pages) Asahi Kasei Microsystems – PS/SD Multi Format Video Decoder

[AK8858]
[4.4.6] Crystal circuit block
Parameter
Frequency
Frequency tolerance
Symbol Min Typ Max Units
f0
24.576
MHz
Δf / f
±100 ppm
Notes
Load capacitance
Effective equivalent resistance
CL
15
pF
Re
100 Ω
(*1)
Crystal parallel capacitance
CO
0.9
pF
XTI terminal external connection load capacitance
CXI
22
pF CL=15pF
XTO terminal external connection load capacitance
CXO
22
pF CL=15pF
(*1) _{Effective equivalent resistance generally may be taken as Re = {R1 x (1+CO/CL)2}. (R1 is the crystal series}
equivalent resistance)
Example connection
Rf
XTI pin
CXI = 22pF
XTO pin
Rd ^{(* 2)}
AK8858 internal circuit
External circuit
CXO = 22pF
(*2) _{Determine need for and appropriate value of limiting resistance (Rd) in accordance with the crystal}
specifications.
MS1230-E-00
- 14 -
2010/9