參數(shù)資料
型號(hào)： MC94MX21DVKN3R2
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 350 MHz, MICROPROCESSOR, PBGA289
封裝： 14 X 14 MM, 1.41 MM HEIGHT, 0.65 MM PITCH, LEAD FREE, PLASTIC, BGA-289
文件頁數(shù)： 91/98頁
文件大?。?/td> 1326K
代理商： MC94MX21DVKN3R2
Specifications
MC94MX21 Technical Data, Rev. 1.
Freescale Semiconductor
91
3.21
I2C Module
The I2C communication protocol consists of seven elements: START, Data Source/Recipient, Data
Direction, Slave Acknowledge, Data, Data Acknowledge, and STOP.
Figure 80. Definition of Bus Timing for I2C
3.22
CMOS Sensor Interface
The CSI module consists of a control register to configure the interface timing, a control register for
statistic data generation, a status register, interface logic, a 32
× 32 image data receive FIFO, and a 16 × 32
statistic data FIFO.
3.22.1
Gated Clock Mode
Figure 81 shows the timing diagram when the CMOS sensor output data is configured for negative edge
and the CSI is programmed to received data on the positive edge. Figure 82 shows the timing diagram
when the CMOS sensor output data is configured for positive edge and the CSI is programmed to received
data in negative edge. The parameters for the timing diagrams are listed in Table 44. The formula for
calculating the pixel clock rise and fall time is located in Section 3.22.3, “Calculation of Pixel Clock Rise/
Table 43. I2C Bus Timing Parameters
Ref
No.
Parameter
1.8 V
± 0.1 V
3.0 V
± 0.3 V
Unit
Minimum
Maximum
Minimum
Maximum
SCL Clock Frequency
0
100
0
100
kHz
1
Hold time (repeated) START condition
114.8
–
111.1
–
ns
2
Data hold time
0
69.7
0
72.3
ns
3
Data setup time
3.1
–
1.76
–
ns
4
HIGH period of the SCL clock
69.7
–
68.3
–
ns
5
LOW period of the SCL clock
336.4
–
335.1
–
ns
6
Setup time for STOP condition
110.5
–
111.1
–
ns
SDA
SCL
1
2
3
4
6
5
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
MC94MX21DVKN3
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