Texas Instruments TMS320C6722 User Manual page 95

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4.15.3 I2C Electrical Data/Timing
4.15.3.1 Inter-Integrated Circuit (I2C) Timing
Table 4-34 and Table 4-35
Figure 4-39).
NO.
1 t
c(SCL)
2 t
su(SCLH-SDAL)
3 t
h(SCLL-SDAL)
4 t
w(SCLL)
5 t
w(SCLH)
6 t
su(SDA-SCLH)
7 t
h(SDA-SCLL)
8 t
w(SDAH)
9 t
r(SDA)
10 t
r(SCL)
11 t
f(SDA)
12 t
f(SCL)
13 t
su(SCLH-SDAH)
14 t
w(SP)
15 C
b
NO.
16 t
c(SCL)
17 t
su(SCLH-SDAL)
18 t
h(SDAL-SCLL)
(1) I2C must be configured correctly to meet the timings in
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assume testing over recommended operating conditions (see
Table 4-34. I2C Input Timing Requirements
Cycle time, I2Cx_SCL
Setup time, I2Cx_SCL high before I2Cx_SDA
low
Hold time, I2Cx_SCL low after I2Cx_SDA low
Pulse duration, I2Cx_SCL low
Pulse duration, I2Cx_SCL high
Setup time, I2Cx_SDA before I2Cx_SCL high
Hold time, I2Cx_SDA after I2Cx_SCL low
Pulse duration, I2Cx_SDA high
Rise time, I2Cx_SDA
Rise time, I2Cx_SCL
Fall time, I2Cx_SDA
Fall time, I2Cx_SCL
Setup time, I2Cx_SCL high before I2Cx_SDA
high
Pulse duration, spike (must be suppressed)
Capacitive load for each bus line
Table 4-35. I2C Switching Characteristics
PARAMETER
Cycle time, I2Cx_SCL
Setup time, I2Cx_SCL high before I2Cx_SDA
low
Hold time, I2Cx_SCL low after I2Cx_SDA low
TMS320C6727, TMS320C6726, TMS320C6722
Floating-Point Digital Signal Processors
Standard Mode
Fast Mode
Standard Mode
Fast Mode
Standard Mode
Fast Mode
Standard Mode
Fast Mode
Standard Mode
Fast Mode
Standard Mode
Fast Mode
Standard Mode
Fast Mode
Standard Mode
Fast Mode
Standard Mode
Fast Mode
Standard Mode
Fast Mode
Standard Mode
Fast Mode
Standard Mode
Fast Mode
Standard Mode
Fast Mode
Standard Mode
Fast Mode
Standard Mode
Fast Mode
Standard Mode
Fast Mode
Standard Mode
Fast Mode
Standard Mode
Fast Mode
Table 4-35.
SPRS268E – MAY 2005 – REVISED JANUARY 2007
Figure 4-38
MIN
10
2.5
4.7
0.6
4
0.6
4.7
1.3
4
0.6
250
100
0
0
4.7
1.3
20 + 0.1C
b
20 + 0.1C
b
20 + 0.1C
b
20 + 0.1C
b
4
0.6
N/A
0
(1)
MIN
10
2.5
4.7
0.6
4
0.6
Peripheral and Electrical Specifications
and
MAX UNIT
s
s
s
s
s
ns
s
0.9
s
1000
ns
300
1000
ns
300
300
ns
300
300
ns
300
s
ns
50
400
pF
400
MAX UNIT
s
s
s
95