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參數(shù)資料
| 型號： | MCIMX31 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 英文描述： | Multimedia Applications Processors |
| 中文描述： | 多媒體應(yīng)用處理器 |
| 文件頁數(shù)： | 21/170頁 |
| 文件大?。?/td> | 1562K |
| 代理商： | MCIMX31 |
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Functional Description and Application Information
i.MX31/i.MX31L Advance Information, Rev. 1.4
Freescale Semiconductor
21
Preliminary
SSI is typically used to transfer samples in a periodic manner. The SSI consists of independent transmitter
and receiver sections with independent clock generation and frame synchronization.
The SSI contains independent (asynchronous) or shared (synchronous) transmit and receive sections with
separate or shared internal/external clocks and frame syncs, operating in Master or Slave mode. The SSI
can work in normal mode operation using frame sync and in Network mode operation allowing multiple
devices to share the port with as many as thirty-two time slots. The SSI provides 2 sets of Transmit and
Receive FIFOs. Each of the four FIFOs is 8x24 bits. The two sets of Tx/Rx FIFOs can be used in Network
mode to provide 2 independent channels for transmission and reception. It also has programmable data
interface modes such like I2S, LSB, MSB aligned and programmable word lengths. Other program options
include frame sync and clock generation and programmable I2S modes (Master, Slave or Normal).
Oversampling clock, ccm_ssi_clk available as output from SRCK in I2S Master mode.
In addition to AC97 support the SSI has completely separate clock and frame sync selections for the
receive and transmit sections. In AC97 standard, the clock is taken from an external source and frame sync
is generated internally. the SSI also has a programmable internal clock divider and Time Slot Mask
Registers for reduced CPU overhead (for Tx and Rx both).
2.3.30
Universal Asynchronous Receiver/Transmitter (UART)
The i.MX31 and i.MX31L contain five UART modules, Each UART module is capable of standard
RS-232 non-return-to-zero (NRZ) encoding format and IrDA-compatible infrared modes. The UART
provides serial communication capability with external devices through an RS-232 cable or through use
of external circuitry that converts infrared signals to electrical signals (for reception) or transforms
electrical signals to signals that drive an infrared LED (for transmission) to provide low speed IrDA
compatibility.
The UART transmits and receives characters containing either 7 or 8 bits (program selectable). To
transmit, data is written from the IP data bus (Sky-Blue line interface) to a 32-byte transmitter FIFO
(TxFIFO). This data is passed to the shift register and shifted serially out on the transmitter pin (TXD). To
receive, data is received serially from the receiver pin (RXD) and stored in a 32-half-words-deep receiver
FIFO (RxFIFO). The received data is retrieved from the RxFIFO on the IP data bus. The RxFIFO and
TxFIFO generate maskable interrupts as well as DMA Requests when the data level in each of the FIFO
reaches a programmed threshold level.
The UART generates baud rates based on a dedicated input clock and its programmable divisor. The
UART also contains programmable auto baud detection circuitry to receive 1 or 2 stop bits as well as odd,
even, or no parity. The receiver detects framing errors, idle conditions, BREAK characters, parity errors,
and overrun errors.
2.3.31
Universal Serial Bus (USB)
The i.MX31 and i.MX31L provides three USB ports. The USB module provides high performance USB
On-The-Go (OTG) functionality, compliant with the USB 2.0 specification, the OTG supplement and the
ULPI 1.0 Low Pin Count specification. The module consists of 3 independent USB cores, each controlling
1 USB port.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCIMX31_07 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Multimedia Applications Processors |
| MCIMX31_08 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Multimedia Applications Processors |
| MCIMX31_09 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Multimedia Applications Processors |
| MCIMX31ADSE | 功能描述:KIT DEV ADS I.MX31 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 過時/停產(chǎn)零件編號 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 傳感器類型:CMOS 成像，彩色（RGB） 傳感范圍:WVGA 接口:I²C 靈敏度:60 fps 電源電壓:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相關(guān)產(chǎn)品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP |
| MCIMX31ADSE/C | 功能描述:開發(fā)板和工具包 - ARM I.MX31 APP DEV SYS RoHS:否 制造商:Arduino 產(chǎn)品:Development Boards 工具用于評估:ATSAM3X8EA-AU 核心:ARM Cortex M3 接口類型:DAC, ICSP, JTAG, UART, USB 工作電源電壓:3.3 V |
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