参数资料
型号: TMDXBDKFP5515
厂商: Texas Instruments
文件页数: 135/159页
文件大小: 0K
描述: KIT DEV FINGERPRINT C5515
标准包装: 1
传感器类型: 指纹
接口: USB
电源电压: 5V
嵌入式: 是,MCU,16 位
已供物品: 板,扩展板,线缆,迷你型 DVD,传感器
已用 IC / 零件: C5515
产品目录页面: 718 (CN2011-ZH PDF)
其它名称: 296-27452
SPRS645F – AUGUST 2010 – REVISED OCTOBER 2013
5.17 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:
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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
5.17.1 SPI Peripheral Register Descriptions
Table 5-45 shows the SPI registers.
Table 5-45. SPI Module Registers
CPU
WORD
ADDRESS
3000h
3001h
3002h
3003h
3004h
3005h
3006h
3007h
3008h
3009h
ACRONYM
SPICDR
SPICCR
SPIDCR1
SPIDCR2
SPICMD1
SPICMD2
SPISTAT1
SPISTAT2
SPIDAT1
SPIDAT2
REGISTER NAME
Clock Divider Register
Clock Control Register
Device Configuration Register 1
Device Configuration Register 2
Command Register 1
Command Register 2
Status Register 1
Status Register 2
Data Register 1
Data Register 2
Copyright ? 2010–2013, Texas Instruments Incorporated
Peripheral Information and Electrical Specifications
Product Folder Links: TMS320C5515
135
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