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CS5825
Century Semiconductor Inc.
page 10 of 13
PARAMETER MEASUREMENT INFORMATION
Figure-8 Receiver Input Skew Margin, Setup/Hold Time, and Delay Time Definitions
and An
td
tc
4/7 tc ± t(RSKM)
(see Note A)
tsu1
th1
3/7 tc ± t(RSKM)
(see Note A)
An
CLKIN
7 x CLK
CLKOUT
(Internal)
tW
tW
VOH
1.4V
≈ 300mV
20%
VOL
td
tr < 1ns
80%
CLKIN
or An
0V
≈ -300mV
NOTE A: CLKIN is advanced or delayed with respect to data until errors are observed at the receiver outputs. The
advance or delay is then reduced until there are no data errors observed. The magnitude of the advance or
delay is t(RSKM).
CLKOUT