参数资料
型号: MC9328MXLDVP20
厂商: Freescale Semiconductor
文件页数: 73/90页
文件大小: 0K
描述: IC MCU I.MX 200MHZ 225-MAPBGA
标准包装: 160
系列: i.MXL
核心处理器: ARM9
芯体尺寸: 32-位
速度: 200MHz
连通性: EBI/EMI,I²C,MMC/SD,SPI,SSI,UART/USART,USB
外围设备: DMA,I²S,LCD,POR,PWM,WDT
输入/输出数: 97
程序存储器类型: ROMless
电压 - 电源 (Vcc/Vdd): 1.7 V ~ 3.3 V
振荡器型: 外部
工作温度: -30°C ~ 70°C
封装/外壳: 225-LFBGA
包装: 托盘
Functional Description and Application Information
MC9328MXL Technical Data, Rev. 8
Freescale Semiconductor
75
4.13
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 60 through Figure 62.
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.
Figure 59. SSI Transmitter Internal Clock Timing Diagram
Table 32. 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
STCK Output
STFS (bl) Output
STFS (wl) Output
1
2
6
8
10
11
STXD Output
SRXD Input
32
31
4
12
Note: SRXD input in synchronous mode only.
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