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| 型號(hào)： | TMS320C6727BGDH275 |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 數(shù)字信號(hào)處理 |
| 英文描述： | Floating-Point Digital Signal Processors |
| 中文描述： | 浮點(diǎn)數(shù)字信號(hào)處理器 |
| 文件頁(yè)數(shù)： | 81/114頁(yè) |
| 文件大?。?/td> | 1030K |
| 代理商： | TMS320C6727BGDH275 |
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4.14 Serial Peripheral Interface Ports (SPI0, SPI1)
4.14.1 SPI Device-Specific Information
Peripheral
Configuration Bus
Interrupt and
DMA Requests
16-Bit Shift Register
16-Bit Buffer
16-Bit Emulation Buffer
C672x SPI Module
GPIO
Control
(all pins)
State
Machine
Clock
Control
SPIx_SIMO
SPIx_SOMI
SPIx_ENA
SPIx_SCS
SPIx_CLK
TMS320C6727B, TMS320C6726B, TMS320C6722B, TMS320C6720
Floating-Point Digital Signal Processors
SPRS370–SEPTEMBER 2006
Figure 4-31
is a block diagram of the SPI module, which is a simple shift register and buffer plus control
logic. Data is written to the shift register before transmission occurs and is read from the buffer at the end
of transmission. The SPI can operate either as a master, in which case, it initiates a transfer and drives
the SPIx_CLK pin, or as a slave. Four clock phase and polarity options are supported as well as many
data formatting options.
Figure 4-31. Block Diagram of SPI Module
The SPI supports 3-, 4-, and 5-pin operation with three basic pins (SPIx_CLK, SPIx_SIMO, and
SPIx_SOMI) and two optional pins (SPIx_SCS, SPIx_ENA).
The optional SPIx_SCS (Slave Chip Select) pin is most useful to enable in slave mode when there are
other slave devices on the same SPI port. The C672x will only shift data and drive the SPIx_SOMI pin
when SPIx_SCS is held low.
In slave mode, SPIx_ENA is an optional output and can be driven in either a push-pull or open-drain
manner. The SPIx_ENA output provides the status of the internal transmit buffer (SPIDAT0/1 registers). In
four-pin mode with the enable option, SPIx_ENA is asserted only when the transmit buffer is full, indicating
that the slave is ready to begin another transfer. In five-pin mode, the SPIx_ENA is additionally qualified
by SPIx_SCS being asserted. This allows a single handshake line to be shared by multiple slaves on the
same SPI bus.
In master mode, the SPIx_ENA pin is an optional input and the master can be configured to delay the start
of the next transfer until the slave asserts SPIx_ENA. The addition of this handshake signal simplifies SPI
communications and, on average, increases SPI bus throughput since the master does not need to delay
each transfer long enough to allow for the worst-case latency of the slave device. Instead, each transfer
can begin as soon as both the master and slave have actually serviced the previous SPI transfer.
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Peripheral and Electrical Specifications
81
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| TMS320C6727BGDH300 | 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC Floating-Point DSP RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT |
| TMS320C6727BGDH350 | 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC Floating-Point DSP RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT |
| TMS320C6727BZDH250 | 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC Floating-Pt Dig RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT |
| TMS320C6727BZDH275 | 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC Floating-Point DSP RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT |
| TMS320C6727BZDH300 | 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC Floating-Point DSP RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT |
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