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10
8
4
3
7
12
5
6
14
2
3
13
Stop
Start
Repeated
Start
Stop
I2Cx_SDA
I2Cx_SCL
1
11
9
25
23
19
18
22
27
20
21
17
18
28
Stop
Start
Repeated
Start
Stop
I2Cx_SDA
I2Cx_SCL
16
26
24
TMS320C6727, TMS320C6726, TMS320C6722
Floating-Point Digital Signal Processors
Floating-Point Digital Signal Processors
SPRS268E – MAY 2005 – REVISED JANUARY 2007
Table 4-35. I2C Switching Characteristics (continued)
NO.
PARAMETER
MIN
MAX
UNIT
Standard Mode
4.7
19
t
w(SCLL)
Pulse duration, I2Cx_SCL low
µ
s
Fast Mode
1.3
Standard Mode
4
20
t
w(SCLH)
Pulse duration, I2Cx_SCL high
µ
s
Fast Mode
0.6
Standard Mode
250
Setup time, I2Cx_SDA valid before I2Cx_SCL
21
t
su(SDAV-SCLH)
ns
high
Fast Mode
100
Standard Mode
0
22
t
h(SCLL-SDAV)
Hold time, I2Cx_SDA valid after I2Cx_SCL low
µ
s
Fast Mode
0
0.9
Standard Mode
4.7
23
t
w(SDAH)
Pulse duration, I2Cx_SDA high
µ
s
Fast Mode
1.3
Standard Mode
4
Setup time, I2Cx_SCL high before I2Cx_SDA
28
t
su(SCLH-SDAH)
µ
s
high
Fast Mode
0.6
Standard Mode
10
Capacitive load on each bus line from this
29
C
b
pF
device
Fast Mode
10
Figure 4-38. I2C Receive Timings
Figure 4-39. I2C Transmit Timings
96
Peripheral and Electrical Specifications