CS4227 Datasheet, PDF (9/36 Pages) Cirrus Logic – Six Channel, 20-Bit Codec

CS4227
SWITCHING CHARACTERISTICS - CONTROL PORT (T_A = 25 °C; VA+, VD+ = +5 V ±5%;
Inputs: logic 0 = DGND, logic 1 = VD+; C_L = 30 pF)
Parameter
Symbol
Min
I²C^® Mode (SPI/I2C = 1)
(Note 17)
SCL Clock Frequency
f_scl
-
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 for SCL Falling
(Note 18)
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
Unit
100
kHz
-
µs
-
µs
-
µs
-
µs
-
µs
-
µs
-
ns
1
µs
300
ns
-
µs
Notes: 17. I²C^® is a registered trademark of Philips Semiconductors.
18. Data must be held for sufficient time to bridge the 300 ns transition time of SCL.
Stop Start
Repeated
Start
SDA
t _buf
t _hdst
t _high
t _hdst
t_f
SCL
t
t
low
hdd
t _sud
t _sust
tr
Figure 4. Control Port I²C Mode
Stop
t _susp
DS281PP2
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