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RM0319 датащи(PDF) 238 Page - STMicroelectronics |
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RM0319 датащи(HTML) 238 Page - STMicroelectronics |
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238 / 368 page ![]() Synchronous serial ports (SSP) RM0319 238/368 Doc ID 022640 Rev 3 18.4 Functional description Figure 86 shows the block diagram of the SSP controller. Figure 86. SSP block diagram 18.4.1 APB slave interface The AMBA APB interface generates read and write decodes for accesses to status and control registers, and transmit and receive FIFO memories. 18.4.2 Register block The register block stores data written or to be read across the AMBA APB interface. SSP1_SS0 Slave select (chip-select) Out Slave select (chip-select) In SSP2_MOSI Transmit Data Out Receive Data In SSP2_MISO Receive Data In Transmit Data Out SSP2_CLK Clock Out Clock In SSP2_SS0 Slave select (chip-select) Out Slave select (chip-select) In Table 68. SSP pin description SSP Port SSP in master mode SSP in slave mode Function Direction Function Direction AMBA APB I/F Tx FIFO (8x16) Rx FIFO (8x16) Register Block DMA interface Clock Prescaler Transmit/ Receive logic FIFO Status And Interrupt Generation IRQ SPI BUS PCLK |
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