CS4350(2006) View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
CS4350 Datasheet PDF : 39 Pages
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CS4350
SWITCHING CHARACTERISTICS - CONTROL PORT - I²C FORMAT
(Inputs: Logic 0 = GND, Logic 1 = VLC, CL = 20 pF)
Parameter
Symbol
Min
Max
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 (Note 8)
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
fscl
-
tirs
500
tbuf
4.7
thdst
4.0
tlow
4.7
thigh
4.0
tsust
4.7
thdd
0
tsud
250
trc, trc
-
tfc, tfc
-
tsusp
4.7
tack
300
100
-
-
-
-
-
-
-
-
1
300
-
1000
Unit
kHz
ns
µs
µs
µs
µs
µs
µs
ns
µs
ns
µs
ns
Notes:
8. Data must be held for sufficient time to bridge the transition time, tfc, of SCL.
RST
t irs
Stop
Start
SDA
t buf
t hdst
t high
Repeated
Start
t rd
t hdst
Stop
t fd
t fc
t susp
SCL
t
low
t
hdd
t sud t ack
t sust
t rc
Figure 5. Control Port Timing - I²C Format
DS691A3
13
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