CS42448-CQZR Cirrus Logic Inc, CS42448-CQZR Datasheet - Page 21

• Manufacturer Part Number: CS42448-CQZR
• Description: IC,Soundcard Circuits,CMOS,QFP,64PIN,PLASTIC
• Manufacturer: Cirrus Logic Inc

DS648F3
SWITCHING SPECIFICATIONS - CONTROL PORT - I²C MODE
VLC = 1.8 V - 5.0 V, VLS = VD = 3.3 V, VA = 5.0 V; Inputs: Logic 0 = DGND, Logic 1 = VLC, SDA C
Notes:
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 SCL and SDA
Fall Time SCL and SDA
Setup Time for Stop Condition
Acknowledge Delay from SCL Falling
R S T
S D A
S C L
22. Data must be held for sufficient time to bridge the transition time, t
23. Guaranteed by design.
Stop
t
t
irs
buf
Start
Parameter
t
t
hdst
lo w
Figure 8. Control Port Timing - I²C Format
t
hdd
t
high
t sud
(Note 22)
(Note 23)
(Note 23)
t ack
Symbol
t
t
t
t
t
t
t
susp
t
t
f
hdst
high
sust
t
hdd
low
sud
t
ack
buf
t
scl
irs
rc
fc
R e p e a te d
t sust
Sta rt
fc
, of SCL.
Min
500
250
300
4.7
4.0
4.7
4.0
4.7
4.7
0
-
-
-
t
hdst
t rd
t rc
t fc
1000
Max
100
300
1
-
-
-
-
-
-
-
-
-
L
t fd
CS42448
= 30 pF.
Stop
t susp
Unit
kHz
ns
µs
µs
µs
µs
µs
µs
ns
µs
ns
µs
ns
21