CS4270 Cirrus Logic, CS4270 Datasheet - Page 19

• Manufacturer Part Number: CS4270
• Description: 192 kHz Stereo Audio CODEC
• Manufacturer: Cirrus Logic

DS686A1
SWITCHING CHARACTERISTICS - I²C MODE CONTROL PORT
(Inputs: logic 0 = DGND, logic 1 = VLC)
I²C Mode
SCL Clock Frequency
RST Rising Edge to Start
Bus Free Time Between Transmissions
Start Condition Hold Time (prior to first clock pulse)
Clock Low time
Clock High Time
Setup Time for Repeated Start Condition
SDA Hold Time from SCL Falling
SDA Setup time to SCL Rising
Rise Time of Both SDA and SCL Lines
Fall Time of Both SDA and SCL Lines
Setup Time for Stop Condition
18. Data must be held for sufficient time to bridge the 300 ns transition time of SCL.
RST
SDA
SCL
Stop
t irs
t buf
Parameter
Start
t hdst
t
low
Figure 8. I²C Mode Control Port Timing
t
hdd
t high
(Note
18)
t sud
Symbol
t
t
t
t
t
t
Repeated
t
t
susp
f
hdst
high
sust
t
hdd
sud
low
buf
scl
t sust
irs
t
t
r
f
Start
t
hdst
Min
500
250
4.7
4.0
4.7
4.0
4.7
4.7
t r
0
-
-
-
t f
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Max
100
300
1
-
-
-
-
-
-
-
-
-
Stop
t susp
CS4270
Unit
kHz
ns
µs
µs
µs
µs
µs
µs
ns
µs
ns
µs
19