CS42324 Datasheet, PDF (24/71 Pages) Cirrus Logic – 10-In, 6-Out, 2 Vrms Audio CODEC

CS42324
SWITCHING CHARACTERISTICS - SOFTWARE MODE - I²C FORMAT
Inputs: Logic ‘0’ = GND = GNDH = 0 V, Logic ‘1’ = VL, C_L = 30 pF)
Parameter
Symbol
Min
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 Note:)
t_hdd
0
SDA Setup time to SCL Rising
t_sud
250
Rise Time of SCL and SDA
t_rc
-
Fall Time SCL and SDA
t_fc
-
Setup Time for Stop Condition
t_susp
4.7
Acknowledge Delay from SCL Falling
t_ack
300
Max
Unit
100
kHz
-
ns
-
µs
-
µs
-
µs
-
µs
-
µs
-
µs
-
ns
1
µs
300
ns
-
µs
1000
ns
Note: 19. Data must be held for sufficient time to bridge the transition time, t_fc, of SCL.
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 5. Software Mode Timing - I²C Format
Stop
t _susp
24
DS721A6