CS4365
SWITCHING CHARACTERISTICS - CONTROL PORT - I2C FORMAT
(Inputs: Logic 0 = GND, Logic 1 = VLC, C = 30 pF)
L
Parameter
SCL Clock Frequency
Symbol
Min
-
Max
Unit
kHz
ns
f
100
scl
RST Rising Edge to Start
t
500
4.7
4.0
4.7
4.0
4.7
0
-
-
-
-
-
-
-
irs
Bus Free Time Between Transmissions
Start Condition Hold Time (prior to first clock pulse)
Clock Low time
t
µs
buf
t
µs
hdst
t
µs
low
Clock High Time
t
µs
high
Setup Time for Repeated Start Condition
t
µs
sust
SDA Hold Time from SCL Falling
(Note 16)
t
µs
hdd
SDA Setup time to SCL Rising
Rise Time of SCL and SDA
Fall Time SCL and SDA
t
250
-
-
1
ns
µs
ns
µs
ns
sud
t , t
rc rc
t , t
-
300
-
fc fc
Setup Time for Stop Condition
Acknowledge Delay from SCL Falling
t
4.7
300
susp
t
1000
ack
Notes:
16. Data must be held for sufficient time to bridge the transition time, t , of SCL.
fc
RST
t
irs
Repeated
Start
Stop
Start
Stop
SDA
SCL
t
t
t
t
t
buf
t
high
hdst
f
susp
hdst
t
t
t
t
t
sust
sud
r
low
hdd
Figure 5. Control Port Timing - I2C Format
16
DS670PP1
CIRRUS [ CIRRUS LOGIC ]
