CX28344 Conexant, CX28344 Datasheet - Page 164

• Manufacturer Part Number: CX28344
• Description: (CX2834x) Dual / Triple / Quad / Hex / Octal - Enhanced DS3 / E3 Framer
• Manufacturer: Conexant

Electrical and Mechanical Specifications
4.2
4.2.1
Figure 4-2. Input Clock Timing
Table 4-4. Input Clock Timing
4-4
GENERAL NOTE:
FOOTNOTE:
(1)
E3 = 34.368 MHz
Symbol
2, 3
2, 3
1
1
1
4
5
There is a limit of 40%–60% duty cycle to all clocks.
90%
50%
10%
±
AC Characteristics
Input Clock Timing
20%; DS3 = 44.736 MHz
The following illustrates the various clocks applied to the CX28342/CX28343/
CX28344/CX28346/CX28348 device and associated parameters.
4
Clock Width High/Low DS3
Clock Width High/Low E3
LINECK Frequency
RXCKI Frequency
TXCKI Frequency
Clock Rise Time
Clock Fall Time
Parameter
Mindspeed Technologies™
±
20%
(1)
(1)
(1)
2
5
1
Minimum
11.6
8.8
E3
E3
E3
—
—
3
Maximum
13.2
17.4
DS3
DS3
DS3
3
3
CX28342/3/4/6/8 Data Sheet
28348-DSH-001-B
Units
MHz
MHz
MHz
ns
ns
ns
ns
100542_023