RS8973 Mindspeed Technologies, RS8973 Datasheet - Page 87

• Manufacturer Part Number: RS8973
• Description: Single-chip Sdsl/hdsl Transceiver
• Manufacturer: Mindspeed Technologies

RS8973
Single-Chip SDSL/HDSL Transceiver
N8973DSD
4.4 Crystal/Clock Interface
A crystal or an external clock is needed to provide a reference clock for the
RS8973. If a crystal is used, it must be connected to the XTALI/MCLK and
XTALO pins along with two external capacitors as shown in
recommended specification for the crystal is given in
vendors and their associated part numbers is displayed in
(pin 40), and the XTALO pin (pin 39) must be left floating. The clock frequency
must be 10.24 MHz.
Figure 4-2. Crystal Oscillator Connection Diagram
Table 4-9. Crystal Specification
Table 4-10. Recommended Crystal Suppliers
Supplier Name and Address
Ecliptek Corporation
3545 Cadillac Avenue
Costa Mesa, CA 92626
General Electronic Devices
320 S. Pacific Street
San Marcos, CA 92069
Nominal Frequency
Frequency Tolerance at 25 °C
Temperature Frequency Stability
Aging
Load Capacitance
NOTE(S):
requirements can vary as long as the total tolerance is less than ±
If an external clock is used, it must be connected to the XTALI/MCLK pin
Individual frequency tolerance, temperature frequency stability, and aging
Preliminary Information
Parameter
Conexant
XTALI / MCLK (40)
Supplier Phone
[phone]
[phone]
Number
22 pF
Y1
XTALO (39)
4.0 Interconnection Information
22 pF
±10 ppm over 10 years
Table
ECX-5173-10.240M
HC49-10.240- .0155- .001/01
Table
30 ppm.
4.4 Crystal/Clock Interface
10.24 MHz
±10 ppm
±10 ppm
4-9. A list of crystal
15.5 pF
Value
Figure
Part Number
4-10.
4-2. The
4-7