參數(shù)資料
型號: W6694CD
廠商: WINBOND ELECTRONICS CORP
元件分類: 通信及網(wǎng)絡(luò)
英文描述: USB Bus ISDN S/T-Controller
中文描述: SPECIALTY TELECOM CIRCUIT, PQFP48
封裝: 7 X 7 MM, 1.40 MM, PLASTIC, LQFP-48
文件頁數(shù): 37/42頁
文件大?。?/td> 567K
代理商: W6694CD
Preliminary Data Sheet
W6694A USB-ISDN S/T-Controller
-37-
Publication Release Date: May, 2001
Revision 1.03
Recommended oscillator circuits
Crystal specifications
Parameter
Frequency
Frequency calibration
tolerance
Load capacitance
Oscillator mode
Note
: The load capacitance C
L
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
Symbol
f
Values
7.680
Max. 100
Unit
MHz
ppm
C
L
Max. 50
Fundamental
pF
9.4 Preliminary Switching Characteristics
9.4.1 PCM Interface Timing
XTAL1
XTAL2
7.68MHz
C
L
50pF
C
L
C
L
XTAL1
XTAL2
External
oscillator
signal
N.C.
or
PBCK
(1.536MHz)
PFCK1
PFCK2
PTXD
PRXD
24 CHs
CH 1
CH 2
Port1
Port1
Port2
Port2
Port1
Port2
Port2
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