参数资料
型号: W6694ACD
厂商: WINBOND ELECTRONICS CORP
元件分类: 数字传输电路
英文描述: DATACOM, ISDN CONTROLLER, PQFP48
封装: 7 X 7 MM, 1.40 MM HEIGHT, LQFP-48
文件页数: 31/42页
文件大小: 567K
代理商: W6694ACD
Preliminary Data Sheet
W6694A USB-ISDN S/T-Controller
-37-
Publication Release Date: May, 2001
Revision 1.03
Recommended oscillator circuits
Crystal specifications
Parameter
Symbol
Values
Unit
Frequency
f
7.680
MHz
Frequency calibration
tolerance
Max. 100
ppm
Load capacitance
CL
Max. 50
pF
Oscillator mode
Fundamental
Note: The load capacitance CL depends on the crystal specification. The typical values are 33 to 47 pF.
External oscillator input (XTAL1) clock characteristics
Parameter
Min.
Max.
Duty cycle
1:2
2:1
9.4 Preliminary Switching Characteristics
9.4.1 PCM Interface Timing
XTAL1
XTAL2
7.68MHz
CL
≤50pF
CL
XTAL1
XTAL2
External
oscillator
signal
N.C.
or
PBCK
(1.536MHz)
PFCK1
PFCK2
PTXD
PRXD
24 CHs
CH 1
CH 2
Port1
Port2
Port1
Port2
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