W6692 Datasheet, PDF (95/104 Pages) Winbond – PCI Bus ISDN S/T-Controller

Preliminary Data Sheet
output current
Transmitter
output
R_X
30
23
impedence
W6692 PCI ISDN S/T-Controller
kΩ Inactive or during binary ONE
Ω During binary ZERO (RL=50 Ω)
SX1,2
Note: ¹⁾ Due to the transformer, the load resistance seen by the circuit is four times R_L.
Capacitances
T_A=25 °C, V_DD= 5 V ± 5 %, V_SSA= 0V, V_SSD=0V, fc=1 Mhz, unmeasured pins grounded.
Parameter
Input capacitance
I/O pin capacitance
Output capacitance
against V_SSA
Input capacitance
Load capacitance
Symbol
C_IN
C_IO
C_OUT
Min.
Max.
7
7
10
Unit Remarks
pF All pins except SR1,2
pF All pins except SR1,2
pF SX1,2
C_IN
7
pF SR1,2
C_L
50 pF XTAL1,2
Recommended oscillator circuits
CL
50 _XTAL1
External
oscillator ⁵⁰ XTAL1
signal
7.68MHz _CL≤50pF or
51
XTAL2
CL
51
N.C.
XTAL2
Crystal specifications
Parameter
Frequency
Frequency calibration
tolerance
Load capacitance
Oscillator mode
Symbol
f
Values
7.680
Max. 100
C_L
Max. 50
Fundamental
Unit
MHz
ppm
pF
Note: The load capacitance C_L depends on the crystal specification. The typical values are 33 to 47 pF.
External ocsillator input (XTAL1) clock characteristics
Parameter
Duty cycle
Min.
1:2
Max.
2:1
-95 -
Publication Release Date: Sep 30, 1999
Revision 0.9