参数资料
型号: MC9328MX1VM20
厂商: Freescale Semiconductor
文件页数: 62/100页
文件大小: 0K
描述: IC MCU I.MX 200MHZ 256-MAPBGA
标准包装: 152
系列: i.MX1
核心处理器: ARM9
芯体尺寸: 32-位
速度: 200MHz
连通性: EBI/EMI,I²C,MMC,智能卡,SPI,SSI,UART/USART,USB
外围设备: DMA,I²S,LCD,POR,PWM,WDT
输入/输出数: 110
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: 0°C ~ 70°C
封装/外壳: 256-MAPBGA
包装: 托盘
Functional Description and Application Information
MC9328MX1 Technical Data, Rev. 7
64
Freescale Semiconductor
Figure 38. SPI Interface Timing Diagram Using MC13180
4.8
SPI Timing Diagrams
To use the internal transmit (TX) and receive (RX) data FIFOs when the SPI 1 module is configured as a
master, two control signals are used for data transfer rate control: the SS signal (output) and the SPI_RDY
signal (input). The SPI1 Sample Period Control Register (PERIODREG1) and the SPI2 Sample Period
Control Register (PERIODREG2) can also be programmed to a fixed data transfer rate for either SPI 1 or
SPI 2. When the SPI 1 module is configured as a slave, the user can configure the SPI1 Control Register
(CONTROLREG1) to match the external SPI master’s timing. In this configuration, SS becomes an input
signal, and is used to latch data into or load data out to the internal data shift registers, as well as to
increment the data FIFO. Figure 39 through Figure 43 show the timing relationship of the master SPI using
different triggering mechanisms.
Table 23. SPI Interface Timing Parameter Table Using MC13180
Ref No.
Parameter
Minimum
Maximum
Unit
1
SPI_EN setup time relative to rising edge of SPI_CLK
15
ns
2
Transmit data delay time relative to rising edge of SPI_CLK
0
15
ns
3
Transmit data hold time relative to rising edge of SPI_EN
0
15
ns
4
SPI_CLK rise time
0
25
ns
5
SPI_CLK fall time
0
25
ns
6
SPI_EN hold time relative to falling edge of SPI_CLK
15
ns
7
Receive data setup time relative to falling edge of SPI_CLK1
1 The SPI_CLK clock frequency and duty cycle, setup and hold times of receive data can be set by programming
SPI_Control (0x00216138) register together with system clock.
15
ns
8
Receive data hold time relative to falling edge of SPI_CLK1
15
ns
9
SPI_CLK frequency, 50% duty cycle required1
–20
MHz
SPI_EN (BT11)
SPI_DATA_OUT (BT12)
SPI CLK (BT13)
SPI_DATA_IN (BT4)
1
7
4
5
8
2
3
6
9
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