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TMS320C5515AZCH12 数据手册 - TI（德州仪器）
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TI（德州仪器）
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DSP数字信号处理器
封装:
NFBGA-196
描述:
DSP)，Texas Instruments德州仪器数字信号处理器是微处理器，带有一个优化的体系结构，用于数字信号处理的运算需求。### 数字信号处理器，Texas Instruments
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TMS320C5515AZCH12数据手册
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TMS320C5515
SPRS645C– AUGUST 2010– REVISED MARCH 2011
www.ti.com
6.17 Serial Port Interface (SPI)
The device serial port interface (SPI) is a high-speed synchronous serial input/output port that allows a
serial bit stream of programmed length (1 to 32 bits) to be shifted into and out of the device at a
programmed bit-transfer rate. The SPI supports multi-chip operation of up to four SPI slave devices. The
SPI can operate as a master device only, slave mode is not supported. Note: The SPI is not supported by
the device DMA controller, so DMA cannot be used in transferring data between the SPI and the on-chip
RAM.
The SPI is normally used for communication between the DSP and external peripherals. Typical
applications include an interface to external I/O or peripheral expansion via devices such as shift registers,
display drivers, SPI EEPROMs, and analog-to-digital converters.
The SPI has the following features:
• Programmable divider for serial data clock generation
• Four pin interface (SPI_CLK, SPI_CSn, SPI_RX, and SPI_TX)
• Programmable data length (1 to 32 bits)
• 4 external chip select signals
• Programmable transfer or frame size (1 to 4096 characters)
• Optional interrupt generation on character completion
• Programmable SPI_CSn to SPI_TX delay from 0 to 3 SPI_CLK cycles
• Programmable signal polarities
• Programmable active clock edge
• Internal loopback mode for testing
6.17.1 SPI Peripheral Register Description(s)
Table 6-44 shows the SPI registers.
Table 6-44. SPI Module Registers
CPU
WORD ACRONYM REGISTER NAME
ADDRESS
3000h SPICDR Clock Divider Register
3001h SPICCR Clock Control Register
3002h SPIDCR1 Device Configuration Register 1
3003h SPIDCR2 Device Configuration Register 2
3004h SPICMD1 Command Register 1
3005h SPICMD2 Command Register 2
3006h SPISTAT1 Status Register 1
3007h SPISTAT2 Status Register 2
3008h SPIDAT1 Data Register 1
3009h SPIDAT2 Data Register 2
138 Peripheral Information and Electrical Specifications Copyright © 2010–2011, Texas Instruments Incorporated
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