Cirrus Logic CS4365 - Manual (Page 17)

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