CN8380 Datasheet, PDF (87/91 Pages) Conexant Systems, Inc – integrated quad line interface unit unit for both 1.544 Mbps (T1) and 2.048 Mbps (E1) applications

B
Appendix B: External Component
Specifications
Table B-1 lists the transformer specifications. Table B-2 lists the REFCKI crystal
oscillator specifications. Figure B-1 illustrates the minimum hardware configuration.
Table B-1. Transformer Specifications
Parameter
RX Value
TX Value
Turns Ratio
2:1 CT
1:2
Pulse Engineering Part Number:
Temp. 0 °C to 70 °C
Octal SMT
Pulse ⁽¹⁾ T1124
Serial Resistance
1 Ω maximum
Primary Inductance
OCL 1.2 mH @ 25 °C
Isolation Voltage
1500 V_rms
Leakage Inductance
0.8 µH
Note(s):
(1) Contact Pulse Engineering for other part numbers:
Phone [phone]
Web: http://www.pulseeng.com
Table B-2. REFCKI (10 MHz) Crystal Oscillator Specifications
Parameter
Value
Nominal Frequency
10 MHz
Frequency Accuracy (E1)
±50 ppm
Frequency Accuracy (T1)
±32 ppm
Output Level ⁽¹⁾
3.3 V Logic, CMOS or TTL
Aging
2 ppm/year, 10 ppm maximum
Note(s):
(1) If the V_GG pin is connected to +5 V supply, 5 V logic output may be used. Refer to the
V_GG pin description in Chapter 1.0, Pin Descriptions .
N8380DSA
Conexant
B-1
Advance Information