參數(shù)資料
型號: TMX320DM647ZUT720
廠商: Texas Instruments, Inc.
英文描述: Digital Media Processor
中文描述: 數(shù)字媒體處理器
文件頁數(shù): 119/166頁
文件大?。?/td> 1341K
代理商: TMX320DM647ZUT720
www.ti.com
P
25
23
19
18
22
27
20
21
17
18
28
Stop
Start
Repeated
Start
Stop
SDA
SCL
16
26
24
TMS320DM647/TMS320DM648
Digital Media Processor
SPRS372–MAY 2007
Table 6-49. Switching Characteristics for I2C Timings
(1)
(see
Figure 6-30
)
-720
-900
NO.
PARAMETER
STANDARD
MODE
MIN
10
UNIT
FAST MODE
MAX
MIN
2.5
MAX
16
t
c(SCL)
Cycle time, SCL
Delay time, SCL high to SDA low (for a repeated START
condition)
Delay time, SDA low to SCL low (for a START and a repeated
START condition)
Pulse duration, SCL low
Pulse duration, SCL high
Delay time, SDA valid to SCL high
Valid time, SDA valid after SCL low
Pulse duration, SDA high between STOP and START
conditions
Rise time, SDA
Rise time, SCL
Fall time, SDA
Fall time, SCL
Delay time, SCL high to SDA high (for STOP condition)
Capacitance for each I2C pin
μs
17
t
d(SCLH-SDAL)
4.7
0.6
μs
18
t
d(SDAL-SCLL)
4
0.6
μs
19
20
21
22
t
w(SCLL)
t
w(SCLH)
t
d(SDAV-SCLH)
t
v(SCLL-SDAV)
4.7
1.3
0.6
100
μs
μs
ns
μs
4
250
0
0
0.9
23
t
w(SDAH)
4.7
1.3
μs
24
25
26
27
28
29
t
r(SDA)
t
r(SCL)
t
f(SDA)
t
f(SCL)
t
d(SCLH-SDAH)
C
p
1000
1000
300
300
20 + 0.1C
b(1)
20 + 0.1C
b(1)
20 + 0.1C
b(1)
20 + 0.1C
b(1)
300
300
300
300
ns
ns
ns
ns
μs
pF
4
0.6
10
10
Figure 6-30. I2C Transmit Timings
(1)
C
b
= total capacitance of one bus line in pF. If mixed with HS-mode devices, faster fall-times are allowed.
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