CS4270_06 Datasheet, PDF (20/49 Pages) Cirrus Logic – 24-Bit, 192 kHz Stereo Audio CODEC

SWITCHING CHARACTERISTICS - I²C MODE CONTROL PORT
(Inputs: logic 0 = DGND, logic 1 = VLC)
Parameter
Symbol
Min
I²C Mode
SCL Clock Frequency
f_scl
-
RST Rising Edge to Start
t_irs
500
Bus Free Time Between Transmissions
t_buf
4.7
Start Condition Hold Time (prior to first clock pulse)
t_hdst
4.0
Clock Low time
t_low
4.7
Clock High Time
t_high
4.0
Setup Time for Repeated Start Condition
t_sust
4.7
SDA Hold Time from SCL Falling
(Note 19)
t_hdd
0
SDA Setup time to SCL Rising
t_sud
250
Rise Time of Both SDA and SCL Lines
t_r
-
Fall Time of Both SDA and SCL Lines
t_f
-
Setup Time for Stop Condition
t_susp
4.7
Max
100
-
-
-
-
-
-
-
-
1
300
-
19. Data must be held for sufficient time to bridge the 300 ns transition time of SCL.
CS4270
Unit
kHz
ns
µs
µs
µs
µs
µs
µs
ns
µs
ns
µs
RST
t _irs
Stop
Start
Repeated
Start
SDA
SCL
t _buf
t _hdst
t _high
t _hdst
tf
t _low t _hdd
t _sud
t _sust
tr
Figure 12. I²C Mode Control Port Timing
Stop
t _susp
20
DS686PP1