Cirrus Logic CS4341 - Manual (Page 12)

CS4341
12 DS298F5
SWITCHING CHARACTERISTICS - CONTROL PORT INTERFACE (I²C
®
)
Notes: 8. Data must be held for sufficient time to bridge the transition time, t
fc
, of SCL.
9. See “Rise Time for Control Port Clock” on page 21 for a recommended circuit to meet rise time
specification.
Parameter Symbol Min Max Unit
I²C Mode
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 8) t
hdd
0 - µs
SDA Setup time to SCL Rising t
sud
250 - ns
Rise Time of SCL (Note 9) t
rc
- 25 ns
Fall Time of SCL t
fc
- 25 ns
Rise Time SDA t
rd
- 1 µs
Fall Time of SDA t
fd
- 300 ns
Setup Time for Stop Condition t
susp
4.7 - µs
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 14. Control Port Timing - I²C Mode