Figure 49. Definition " />
參數(shù)資料
型號: MC9328MXSVP10
廠商: Freescale Semiconductor
文件頁數(shù): 62/74頁
文件大?。?/td> 0K
描述: IC MCU I.MXS 100MHZ 225-MAPBGA
標準包裝: 160
系列: i.MXS
核心處理器: ARM9
芯體尺寸: 32-位
速度: 100MHz
連通性: EBI/EMI,I²C,SPI,SSI,UART/USART,USB
外圍設(shè)備: DMA,I²S,LCD,POR,PWM,WDT
輸入/輸出數(shù): 97
程序存儲器類型: ROMless
電壓 - 電源 (Vcc/Vdd): 1.7 V ~ 3.3 V
振蕩器型: 外部
工作溫度: 0°C ~ 70°C
封裝/外殼: 225-LFBGA
包裝: 托盤
Functional Description and Application Information
MC9328MXS Technical Data, Rev. 3
Freescale Semiconductor
65
Figure 49. Definition of Bus Timing for I2C
4.11
Synchronous Serial Interface
The transmit and receive sections of the SSI can be synchronous or asynchronous. In synchronous mode,
the transmitter and the receiver use a common clock and frame synchronization signal. In asynchronous
mode, the transmitter and receiver each have their own clock and frame synchronization signals.
Continuous or gated clock mode can be selected. In continuous mode, the clock runs continuously. In gated
clock mode, the clock functions only during transmission. The internal and external clock timing diagrams
are shown in Figure 51 through Figure 53.
Normal or network mode can also be selected. In normal mode, the SSI functions with one data word of
I/O per frame. In network mode, a frame can contain between 2 and 32 data words. Network mode is
typically used in star or ring-time division multiplex networks with other processors or codecs, allowing
interface to time division multiplexed networks without additional logic. Use of the gated clock is not
allowed in network mode. These distinctions result in the basic operating modes that allow the SSI to
communicate with a wide variety of devices.
Table 28. I2C Bus Timing Parameter Table
Ref No.
Parameter
1.8 ± 0.1 V
3.0 ± 0.3 V
Unit
Minimum
Maximum
Minimum
Maximum
1
Hold time (repeated) START condition
182
160
ns
2
Data hold time
01710150
ns
3
Data setup time
11.4
10
ns
4
HIGH period of the SCL clock
80
120
ns
5
LOW period of the SCL clock
480
320
ns
6
Setup time for STOP condition
182.4
160
ns
SDA
SCL
1
2
3
4
6
5
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