184
TMS320C6748
SPRS590G – JUNE 2009 – REVISED JANUARY 2017
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TMS320C6748
Peripheral Information and Electrical Specifications
Copyright © 2009–2017, Texas Instruments Incorporated
6.18.3 I2C Electrical Data/Timing
6.18.3.1 Inter-Integrated Circuit (I2C) Timing
Table 6-85
and
Table 6-86
assume testing over recommended operating conditions (see
Figure 6-43
and
Figure 6-44
).
Table 6-85. Timing Requirements for I2C Input
NO.
1.3V, 1.2V, 1.1V, 1.0V
UNIT
Standard Mode
Fast Mode
MIN
MAX
MIN
MAX
1
t
c(SCL)
Cycle time, I2Cx_SCL
10
2.5
μ
s
2
t
su(SCLH-SDAL)
Setup time, I2Cx_SCL high before I2Cx_SDA low
4.7
0.6
μ
s
3
t
h(SCLL-SDAL)
Hold time, I2Cx_SCL low after I2Cx_SDA low
4
0.6
μ
s
4
t
w(SCLL)
Pulse duration, I2Cx_SCL low
4.7
1.3
μ
s
5
t
w(SCLH)
Pulse duration, I2Cx_SCL high
4
0.6
μ
s
6
t
su(SDA-SCLH)
Setup time, I2Cx_SDA before I2Cx_SCL high
250
100
ns
7
t
h(SDA-SCLL)
Hold time, I2Cx_SDA after I2Cx_SCL low
0
0
0.9
μ
s
8
t
w(SDAH)
Pulse duration, I2Cx_SDA high
4.7
1.3
μ
s
9
t
r(SDA)
Rise time, I2Cx_SDA
1000
20 + 0.1C
b
300
ns
10
t
r(SCL)
Rise time, I2Cx_SCL
1000
20 + 0.1C
b
300
ns
11
t
f(SDA)
Fall time, I2Cx_SDA
300
20 + 0.1C
b
300
ns
12
t
f(SCL)
Fall time, I2Cx_SCL
300
20 + 0.1C
b
300
ns
13
t
su(SCLH-SDAH)
Setup time, I2Cx_SCL high before I2Cx_SDA high
4
0.6
μ
s
14
t
w(SP)
Pulse duration, spike (must be suppressed)
N/A
0
50
ns
15
C
b
Capacitive load for each bus line
400
400
pF
(1)
I2C must be configured correctly to meet the timings in
Table 6-86
.
Table 6-86. Switching Characteristics for I2C
(1)
NO.
PARAMETER
1.3V, 1.2V, 1.1V, 1.0V
UNIT
Standard Mode
Fast Mode
MIN
MAX
MIN
MAX
16
t
c(SCL)
Cycle time, I2Cx_SCL
10
2.5
μ
s
17
t
su(SCLH-SDAL)
Setup time, I2Cx_SCL high before I2Cx_SDA low
4.7
0.6
μ
s
18
t
h(SDAL-SCLL)
Hold time, I2Cx_SCL low after I2Cx_SDA low
4
0.6
μ
s
19
t
w(SCLL)
Pulse duration, I2Cx_SCL low
4.7
1.3
μ
s
20
t
w(SCLH)
Pulse duration, I2Cx_SCL high
4
0.6
μ
s
21
t
su(SDAV-SCLH)
Setup time, I2Cx_SDA valid before I2Cx_SCL high
250
100
ns
22
t
h(SCLL-SDAV)
Hold time, I2Cx_SDA valid after I2Cx_SCL low
0
0
0.9
μ
s
23
t
w(SDAH)
Pulse duration, I2Cx_SDA high
4.7
1.3
μ
s
28
t
su(SCLH-SDAH)
Setup time, I2Cx_SCL high before I2Cx_SDA high
4
0.6
μ
s