参数资料
型号: MC9328MX1VM20
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 200 MHz, RISC PROCESSOR, PBGA256
封装: 14 X 14 MM, 1.30 MM HEIGHT, 0.80 MM PITCH, MAPBGA-256
文件页数: 54/94页
文件大小: 1487K
代理商: MC9328MX1VM20
58
MC9328MX1 Advance Information
MOTOROLA
Specifications
3.12 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 SPI 1 Sample Period Control Register (PERIODREG1) and the SPI 2 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 SPI 1 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 40. Master SPI Timing Diagram Using SPI_RDY Edge Trigger
Figure 41. Master SPI Timing Diagram Using SPI_RDY Level Trigger
Figure 42. Master SPI Timing Diagram Ignore SPI_RDY Level Trigger
Figure 43. Slave SPI Timing Diagram FIFO Advanced by BIT COUNT
1
2
3
5
4
SS
SPIRDY
SCLK, MOSI, MISO
SS
SPIRDY
SCLK, MOSI, MISO
SS (output)
SS (input)
SCLK, MOSI, MISO
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