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USB3503 数据表(PDF) 38 Page - Microchip Technology

部件名 USB3503
功能描述  USB 2.0 HSIC High-Speed Hub Controller Optimized
PDF  73 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

USB3503 数据表(HTML) 38 Page - Microchip Technology

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USB3503
DS00001584B-page 38
 2011-2015 Microchip Technology Inc.
6.3.3
I2C TIMING
Below is the timing diagram and timing specifications for the different I2C modes that the USB3503 supports.
FIGURE 6-4:
I2C TIMING DIAGRAM
FIGURE 6-5:
I2C TIMING SPECIFICATIONS
Symbol
Parameter
Standard-Mode
Fast-Mode
Fast-Mode Plus
Unit
MIN
MAX
MIN
MAX
MIN
MAX
fSCL
SCL clock
frequency
0
100
0
400
0
1000
KHz
tHD;STA
Hold time
START condition
4
0.6
0.26
μs
tLOW
LOW period of the
SCL clock
4.7
1.3
0.5
μs
tHIGH
HIGH period of the
SCL clock
4
0.6
0.26
μs
tSU;STA
Set-up time for a
repeated START
condition
4.7
0.6
0.26
μs
tHD;DAT
DATA hold time
0
0
0
ns
tSU;DAT
DATA set-up time
250
100
50
ns
t
R
Rise time of both
SDA and SCL
signals
1000
300
120
ns
t
F
Fall time of both
SCL and SDA lines
300
300
120
ns
tSU;STO
Set-up time for a
STOP condition
4
0.6
0.26
μs
tBUF
Bus free time
between a STOP
and START
condition
4.7
1.3
0.5
μs
tHD;STA
tSU;STO
tSU;STA
tSU;DAT
tHIGH
tF
tR
tLOW
tHD;DAT
tHD;STA
tBUF
AB_DATA
AB_CLK
I2C_CLK
I2C_DATA



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