CDC536
www.ti.com
SCAS378G–APRIL 1994–REVISED JULY 2004
PARAMETER MEASUREMENT INFORMATION (continued)
CLKIN
t
t
phase error 1
Outputs
Operating
at 1/2 CLKIN
Frequency
phase error 2
t
t
phase error 3
t
phase error 4
phase error 7
Outputs
Operating
at CLKIN
t
t
t
phase error 5
phase error 8
Frequency
t
phase error 9
phase error 6
A. NOTES: . Output skew, tsk(o), is calculated as the greater of:
•
•
The difference between the fastest and slowest of tphase error n (n = 1, 2, . . . 6)
The difference between the fastest and slowest of tphase error n (n = 7, 8, 9)
B. Process skew, tsk(pr), is calculated as the greater of:
•
The difference between the maximum and minimum tphase error n (n = 1, 2, . . . 6) across multiple devices under
identical operating conditions.
•
The difference between the maximum and minimum tphase
identical operating conditions.
(n = 7, 8, 9) across multiple devices under
n
error
Figure 2. Skew Waveforms and Calculations
7
TI [ TEXAS INSTRUMENTS ]
