參數(shù)資料
型號: TMS320C6727B_07
廠商: Texas Instruments, Inc.
元件分類: 數(shù)字信號處理
英文描述: Floating-Point Digital Signal Processors
中文描述: 浮點數(shù)字信號處理器
文件頁數(shù): 96/116頁
文件大?。?/td> 999K
代理商: TMS320C6727B_07
www.ti.com
4.15.3 I2C Electrical Data/Timing
TMS320C6727B, TMS320C6726B, TMS320C6722B, TMS320C6720
Floating-Point Digital Signal Processors
SPRS370C–SEPTEMBER 2006–REVISED OCTOBER 2007
4.15.3.1
Inter-Integrated Circuit (I2C) Timing
Table 4-36
and
Table 4-37
assume testing over recommended operating conditions (see
Figure 4-38
and
Figure 4-39
).
Table 4-36. I2C Input Timing Requirements
NO.
MIN
10
2.5
4.7
0.6
MAX
UNIT
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
1
t
c(SCL)
Cycle time, I2Cx_SCL
μ
s
Setup time, I2Cx_SCL high before I2Cx_SDA
low
2
t
su(SCLH-SDAL)
μ
s
4
3
t
h(SCLL-SDAL)
Hold time, I2Cx_SCL low after I2Cx_SDA low
μ
s
0.6
4.7
1.3
4
t
w(SCLL)
Pulse duration, I2Cx_SCL low
μ
s
4
5
t
w(SCLH)
Pulse duration, I2Cx_SCL high
μ
s
0.6
250
100
6
t
su(SDA-SCLH)
Setup time, I2Cx_SDA before I2Cx_SCL high
ns
0
0
7
t
h(SDA-SCLL)
Hold time, I2Cx_SDA after I2Cx_SCL low
μ
s
0.9
4.7
1.3
8
t
w(SDAH)
Pulse duration, I2Cx_SDA high
μ
s
1000
300
1000
300
300
300
300
300
9
t
r(SDA)
Rise time, I2Cx_SDA
ns
20 + 0.1C
b
10
t
r(SCL)
Rise time, I2Cx_SCL
ns
20 + 0.1C
b
11
t
f(SDA)
Fall time, I2Cx_SDA
ns
20 + 0.1C
b
12
t
f(SCL)
Fall time, I2Cx_SCL
ns
20 + 0.1C
b
4
Setup time, I2Cx_SCL high before I2Cx_SDA
high
13
t
su(SCLH-SDAH)
μ
s
0.6
N/A
14
t
w(SP)
Pulse duration, spike (must be suppressed)
ns
0
50
400
400
15
C
b
Capacitive load for each bus line
pF
Table 4-37. I2C Switching Characteristics
(1)
NO.
PARAMETER
MIN
10
2.5
4.7
0.6
MAX
UNIT
Standard Mode
Fast Mode
Standard Mode
Fast Mode
Standard Mode
Fast Mode
16
t
c(SCL)
Cycle time, I2Cx_SCL
μ
s
Setup time, I2Cx_SCL high before I2Cx_SDA
low
17
t
su(SCLH-SDAL)
μ
s
4
18
t
h(SDAL-SCLL)
Hold time, I2Cx_SCL low after I2Cx_SDA low
μ
s
0.6
(1)
I2C must be configured correctly to meet the timings in
Table 4-37
.
Peripheral and Electrical Specifications
96
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