2.0 Functional Description
2.9 AC Characteristics
CX28331/CX28332/CX28333
Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit
2.9 AC Characteristics
Table 2-6. AC Characteristics (Logic Timing)
Parameter
Tosym, Tisym
RCLK and TCLK
Clock Duty Cycle
Conditions
E3
DS-3
STS-1
Towidth/Tosym, RCLK
Tiwidth/Tisym, TCLK
Tiwidth/Tisym, REFCLK
—
TPOS/TNRZ, TNEG,
TAIS
TPOS/TNRZ, TNEG,
TAIS
Min
—
Nom
29.10
22.35
19.29
—
Max
—
Unit
ns
ns
ns
%
%
%
ns
ns
ns
45
40
40
—
4
0
55
60
60
3
—
—
Todelay
Tisetup
Tihold
NOTE(S):
—
—
—
1. The description applies to the DS3, E3, and STS-1 clock rates and other parameters such
as pulse width, set-up time, hold time, and duty cycle.
2. The timing diagram, illustrated in
describes the logical relationship between
various clock and data signals, and parameter values.
2-22
Conexant
100985A
CONEXANT [ CONEXANT SYSTEMS, INC ]
