Cirrus Logic CS1631 - Manual (Page 8)

CS1630/31
8 DS954F3
3.2 I
2
C ™ Port Switching Characteristics
Test conditions (unless otherwise specified):
• Inputs: Logic 0 = GND = 0V, Logic 1 = 3.3V.
• The CS1630/31 control port only supports I
2 C slave functionality.
• It is recommended that a 2.2k  pull-up resistor be placed from the SDA pin to V
DD
.
Parameter Symbol Min Typ Max Unit
SCL Clock Frequency f
scl
- - 400 kHz
Bus Free Time Between Transmissions t
buf
1.3 - - µs
Start Condition Hold Time (prior to first clock pulse) t
hdst
0.6 - - µs
Clock Low time t
low
1.3 - - µs
Clock High Time t
high
0.6 - - µs
Setup Time for Repeated Start Condition t
sust
0.6 - - µs
SDA Input Hold Time from SCL Falling t
hddi
0 - 0.9 µs
SDA Setup time to SCL Rising t
sud
100 - - ns
Setup Time for Stop Condition t
susp
0.6 - - µs
SDA Input Voltage Low V
il
- 1.5 - V
SDA Input Voltage High V
ih
- 1.85 - V
SDA Output Voltage Low V
ol
- 0.25 - V
Stop
SD A
S C L
t
f
t
susp
Stop
t
r
t
hdst
t
sust t
hddo
t
sud
t
high
t
hddi
t
low
t
hdst
t
buf
Sta rt
Re pe ate d
S ta rt