Datasheet
4−7
4.4.5 I
2
C Slave Mode Interface Signals Over Recommended Operating Conditions (unless
otherwise noted)
PARAMETER
TEST
STANDARD MODE FAST MODE
UNITS
PARAMETER
TEST
CONDITIONS
MIN TYP MAX MIN TYP MAX
UNITS
f
SCL
Frequency, SCL 0 100 0 400 kHz
t
W(H
)
Minimum pulse duration,
SCL high
See Note 15 0.43 0.12 µs
t
W(L)
Minimum pulse duration,
SCL low
See Note 15 1.3 0.9 µs
t
r
Rise time, SDA
Output
C
L
= 330 pF 48.3 48.3 ns
t
f
Fall time, SDA
Output
C
L
= 330 pF 35.9 35.9 ns
t
su1
Setup time, SDA
Input
to SCL See Note 15 0 0 ns
t
h1
Hold
SCL to SDA
Input
See Note 15 0 0 ns
t
h1
Hold
time
SCL to SDA
Output
See Note 16 T
oversamp
2T
oversamp
T
oversamp
2T
oversamp
µs
t
buf
Minimum bus free time
between STOP and START
condition
See Note 15 0.82 0.38 µs
t
su2
Minimum setup time, SCL to
START condition
See Note 15 0.7 0.4 µs
t
h2
Minimum hold time, START
condition to SCL
See Note 15 1.5 0.05 µs
t
su3
Minimum setup time, SCL to
STOP condition
See Note 15 0.9 0.4 µs
NOTES: 15. The maximum and/or minimum values for the TAS3103 I
2
C port parameters meets those characteristics of the SDA and SCL bus
lines listed below, as specified in the I
2
C bus devices bus specification.
16. T
oversamp
is the period of the oversample clock provided to the I
2
C master salve controller. This clock is dependent on the
microprocessor clock setting and the value set for the variable N in subaddress 0xFB. See Figure 2−14.
SPECIFIED I
2
C BUS CHARACTERISTICS
PARAMETER STANDARD MODE FAST MODE
Pulse duration high, t
w(H)
4 µs
MIN
0.6 µs
MIN
SCL
Pulse duration low, t
w(L)
4.7 µs
MIN
1.3 µs
MIN
SCL
Frequency f
SCL
100 kHz 400 kHz
SDA
Input
Setup time t
su1
, SDA
Input
to SCL 250 ns
MIN
100 ns
MIN
SDA
Input
Hold Time t
h1
, SCL to SDA
Input
0 ns
MIN
0 ns
MIN
Bus free time between STOP and START condition t
buf
4.7 µs
MIN
1.3 µs
MIN
START/STOP conditions
Setup time t
su2
, SCL to START condition 4.7 µs
MIN
0.6 µs
MIN
START/STOP conditions
Hold time t
h2
, START condition to SCL 4 µs
MIN
0.6 µs
MIN
Setup time t
su3
, SCL to STOP condition 4 µs
MIN
0.6 µs
MIN