Data Sheet

K255B-SR
FN-LINK TECHNOLOGY LIMITED Proprietary & Confidential Information
18
Card output timing (SDR Modes up to 100MHz)
Symbol
Minimum
Maximum
Unit
Comments
t
ODLY
-
7.85
a
ns
t
CLK
≥10 ns C
L
=30 pF using driver type B for SDR50
t
ODLY
-
14.0
ns
t
CLK
≥20 ns C
L
=40 pF using for SDR12, SDR25
t
OH
1.5
-
ns
Hold time at the t
ODLY
(min) CL=15 pF
a. SDIO 3.0 specification value is 7.5 ns.
Card output timing (SDR Modes 100MHz to 208MHz)
Symbol
Minimum
Maximum
Unit
Comments
t
OP
0
2
UI
Card output phase
△t
OP
-350
+1550
ps
Delay variation due to temp change after tuning
t
ODW
0.6
-
UI
t
ODW
= 2.88 ns @ 208 MHz