CS4365
SWITCHING CHARACTERISTICS - CONTROL PORT - I2C FORMAT
Inputs: Logic 0 = GND, Logic 1 = VLC, C L = 20 pF.
Parameter
SCL Clock Frequency
RST Rising Edge to Start
Bus Free Time Between Transmissions
Start Condition Hold Time (prior to first clock pulse)
Clock Low time
Clock High Time
Setup Time for Repeated Start Condition
Symbol
f scl
t irs
t buf
t hdst
t low
t high
t sust
Min
-
500
4.7
4.0
4.7
4.0
4.7
Max
100
-
-
-
-
-
-
Unit
kHz
ns
μs
μs
μs
μs
μs
SDA Hold Time from SCL Falling
SDA Setup time to SCL Rising
Rise Time of SCL and SDA
Fall Time SCL and SDA
Setup Time for Stop Condition
Acknowledge Delay from SCL Falling
t hdd
t sud
t rc , t rc
t fc , t fc
t susp
t ack
0
250
-
-
4.7
300
-
-
1
300
-
1000
μs
ns
μs
ns
μs
ns
Notes:
17. Data must be held for sufficient time to bridge the transition time, t fc , of SCL.
RST
t irs
Repeated
Stop
Start
Start
Stop
SDA
t buf
t hdst
t high
t
hdst
tf
t susp
SCL
t
low
t
hdd
t sud
t sust
tr
Figure 4. Control Port Timing - I2C Format
DS670F2
17
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