Datasheet

DS92LV2421, DS92LV2422
www.ti.com SNLS321B –MAY 2010–REVISED APRIL 2013
Deserializer Switching Characteristics (continued)
Over recommended operating supply and temperature ranges unless otherwise specified.
Symbol Parameter Conditions Pin/Freq. Min
(1)
Typ Max
(1)
Units
t
DCCJ
Des Cycle-to-Cycle Jitter SSC[3:0] = OFF
(5)
CLKOUT = 10 MHz 375 900 ps
CLKOUT = 65 MHz 500 1150 ps
CLKOUT = 75 MHz 460 1000 ps
t
IJT
Des Input Jitter Tolerance, EQ = OFF, jitter freq <2MHz 0.9 UI
(2)
Figure 18 SSCG = OFF,
jitter freq >6MHz
0.5 UI
(2)
CLKOUT = 75 MHz
BIST Mode
t
PASS
BIST PASS Valid Time,
1 10 μs
BISTEN = 1, Figure 19
SSCG Mode
f
DEV
Spread Spectrum CLKOUT = 10 to 65
Clocking Deviation MHz, SSC[3:0] = ON ±0.5 ±2 %
Frequency
f
MOD
Spread Spectrum CLKOUT = 10 to 65
Clocking Modulation MHz, SSC[3:0] = ON 8 100 kHz
Frequency
(5) t
DCCJ
is the maximum amount of jitter between adjacent clock cycles.
Recommended Timing for the Serial Control Bus
Over recommended operating supply and temperature ranges unless otherwise specified.
Symbol Parameter Conditions Min
(1)
Typ Max
(1)
Units
f
SCL
SCL Clock Frequency Standard Mode 100 kHz
Fast Mode 400 kHz
t
LOW
SCL Low Period Standard Mode 4.7 μs
Fast Mode 1.3 μs
t
HIGH
SCL High Period Standard Mode 4.0 μs
Fast Mode 0.6 μs
t
HD;STA
Hold time for a start or a Standard Mode 4.0 μs
repeated start condition,
Fast Mode
0.6 μs
Figure 20
t
SU:STA
Set Up time for a start or a Standard Mode 4.7 μs
repeated start condition,
Fast Mode
0.6 μs
Figure 20
t
HD;DAT
Data Hold Time, Standard Mode 0 3.45 μs
Figure 20
Fast Mode 0 0.9 μs
t
SU;DAT
Data Set Up Time, Standard Mode 250 ns
Figure 20
Fast Mode 100 ns
t
SU;STO
Set Up Time for STOP Standard Mode 4.0 μs
Condition, Figure 20
Fast Mode 0.6 μs
t
BUF
Bus Free Time Standard Mode 4.7 μs
Between STOP and START,
Fast Mode
1.3 μs
Figure 20
t
r
SCL & SDA Rise Time, Standard Mode 1000 ns
Figure 20
Fast Mode 300 ns
t
f
SCL & SDA Fall Time, Standard Mode 300 ns
Figure 20
Fast mode 300 ns
(1) Specification is verified by design and is not tested in production.
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