
CS4392
34
DS459PP3
SWITCHING CHARACTERISTICS - CONTROL PORT INTERFACE
(Inputs: logic 0 = AGND, logic 1 = VL)
Notes: 6. Data must be held for sufficient time to bridge the 300 ns transition time of SCL.
Parameter
Symbol
Min
Max
Unit
I2C Mode
SCL Clock Frequency
fscl
-
100
kHz
RST Rising Edge to Start
tirs
500
-
ns
Bus Free Time Between Transmissions
tbuf
4.7
-
s
Start Condition Hold Time (prior to first clock pulse)
thdst
4.0
-
s
Clock Low time
tlow
4.7
-
s
Clock High Time
thigh
4.0
-
s
Setup Time for Repeated Start Condition
tsust
4.7
-
s
SDA Hold Time from SCL Falling
thdd
0-
s
SDA Setup time to SCL Rising
tsud
250
-
ns
Rise Time of Both SDA and SCL Lines
tr
-1
s
Fall Time of Both SDA and SCL Lines
tf
-300
ns
Setup Time for Stop Condition
tsusp
4.7
-
s
t
buf
t
hdst
t
hdst
t
lo w
t r
t f
t
hdd
t
high
t sud
t sust
t susp
Stop
S ta rt
Sta rt
Stop
R e p eated
SDA
SC L
t
irs
RST
Figure 38. I2C Mode Control Port Timing