Multicore Fixed and Floating-Point System-on-Chip
Copyright 2012 Texas Instruments Incorporated
TMS320C6670 Peripheral Information and Electrical Specifications
199
SPRS689D—March 2012
TMS320C6670
Figure 7-37
I
2
C Transmit Timings
Table 7-67
I
2
C Switching Characteristics
(1)
(see
1 C
b
= total capacitance of one bus line in pF. If mixed with HS-mode devices, faster fall-times are allowed.
No.
Parameter
Standard Mode
Fast Mode
Unit
Min
Max
Min
Max
16 t
c(SCL)
Cycle time, SCL
10
2.5
ms
17 t
su(SCLH-SDAL)
Setup time, SCL high to SDA low (for a repeated START condition)
4.7
0.6
ms
18
t
h(SDAL-SCLL)
Hold time, SDA low after SCL low (for a START and a repeated START
condition)
4
0.6
ms
19 t
w(SCLL)
Pulse duration, SCL low
4.7
1.3
ms
20 t
w(SCLH)
Pulse duration, SCL high
4
0.6
ms
21 t
d(SDAV-SDLH)
Delay time, SDA valid to SCL high
250
100
ns
22 t
v(SDLL-SDAV)
Valid time, SDA valid after SCL low (for I
2
C bus devices)
0
0
0.9
ms
23 t
w(SDAH)
Pulse duration, SDA high between STOP and START conditions
4.7
1.3
ms
24 t
r(SDA)
Rise time, SDA
1000
20 + 0.1C
300
ns
25 t
r(SCL)
Rise time, SCL
1000
20 + 0.1C
300
ns
26 t
f(SDA)
Fall time, SDA
300
20 + 0.1C
300
ns
27 t
f(SCL)
Fall time, SCL
300
20 + 0.1C
300
ns
28 t
d(SCLH-SDAH)
Delay time, SCL high to SDA high (for STOP condition)
4
0.6
ms
C
p
Capacitance for each I
2
C pin
10
10
pF
End of Table 7-67
25
23
19
18
22
27
20
21
17
18
28
Stop
Start
Repeated
Start
Stop
SDA
SCL
16
26
24
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