4.0 Electrical/Mechanical Specifications
CX28394/28395/28398
4.4 AC Characteristics
Quad/x16/Octal—T1/E1/J1 Framers
4.4 AC Characteristics
Table 4-4. Input Clock Timing
Symbol
Parameter
Minimum
Maximum
Units
1
MCLK Frequency
SYSCLK Frequency
8.0
32.765
1.5
35.7
32.771
2.1
MHz
MHz
MHz
MHz
MHz
ns
RCKI, TCKI, ACKI Frequency
RSBCKI, TSBCKI Frequency
TCK Frequency
1.5
8.2
0
5.0
2
3
4
5
Clock Width High
0.4 x t(1)
0.4 x t(1)
—
0.6 x t(1)
0.6 x t(1)
20
Clock Width Low
ns
Clock Rise Time
ns
Clock Fall Time
—
20
ns
Figure 4-1. Minimum Clock Pulse Widths
1
2
3
90%
50%
10%
4
5
4-4
Conexant
100054E