CS4222
SWITCHING SPECIFICATIONS - CONTROL PORT INTERFACE (I2C) (Continued)
Parameter
Symbol
Min
Max
Unit
2
I C Mode
SCL Clock Frequency
f
-
100
kHz
ns
µs
µs
µs
µs
µs
µs
ns
µs
ns
µs
scl
t
500
4.7
4.0
4.7
4.0
4.7
0
-
RST Rising Edge to Start
irs
Bus Free Time Between Transmissions
Start Condition Hold Time (prior to first clock pulse)
Clock Low time
t
-
buf
t
-
hdst
t
-
low
Clock High Time
t
-
high
Setup Time for Repeated Start Condition
SDA Hold Time from SCL Falling
SDA Setup time to SCL Rising
Rise Time of SCL and SDA
t
-
sust
(Note 11)
t
-
hdd
t
250
-
-
1
sud
t
r
Fall Time SCL and SDA
t
-
300
-
f
Setup Time for Stop Condition
t
4.7
susp
Notes: 11. Data must be held for sufficient time to bridge the transition time, t , of SCL.
fc
R S T
t
irs
R e p e a te d
Stop
S t a rt
Stop
S ta rt
t
t
rd
fd
S D A
S C L
t
t
t
t
t
buf
t
high
hdst
fc
susp
hdst
lo w
t
t
t
t
t
t
sust
sud
ack
rc
hdd
2
Figure 3. Control Port Timing - I C Mode
DS236F1
11
CIRRUS [ CIRRUS LOGIC ]
