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| 型号： | VNC1L-1A |
| 厂商： | Future Technology Devices International Ltd |
| 元件分类： | 总线控制器 |
| 中文描述： | UNIVERSAL SERIAL BUS CONTROLLER, PQFP48 |
| 封装： | 7 X 7 MM, 0.50 MM PITCH, GREEN, LQFP-48 |
| 文件页数： | 11/32页 |
| 文件大小： | 672K |
| 代理商： | VNC1L-1A |
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Copyright 2009 Future Technology Devices International Limited
19
Document Reference No.: FT_000030
Vinculum VNC1L Embedded USB Host Controller IC Datasheet Version 2.02
Clearance No.: FTDI# 50
Figure 5.5 SPI Slave Mode Data Write
5.2.4 SPI Master Status Read Transaction
The VNC1L has a status byte which determines the state of the Receive and Transmit Buffers. The SPI
master must poll VNC1L and read the status byte.
The Start and Setup sequence is sent to VNC1L by the SPI master, see Figure 5.6. The VNC1L clocks out
its status byte on subsequent rising edge clock cycles from the SPI master. This is followed by a status
bit generated by VNC1L (also on the SDO) which will always be zero (indicating new data).
The meaning of the bits within the status byte sent by VNC1L during a Status Read operation is described
in Table 5.8.
The result of the Status Read transaction is only valid during the transaction itself.
Data read and data write transactions must still check the status bit during a Data Read or Data Write
cycle regardless of the result of a Status Read operation.
Bit
Description
0
RXF#
Receive Buffer Full
1
TXE#
Transmit Buffer Empty
2
-
3
-
4
RXF IRQEn
Receive Buffer Full Interrupt Enable
5
TXE IRQEn
Transmit Buffer Empty Interrupt Enable
6
-
7
-
Table 5.8 SPI Status Read Byte – bit descriptions.
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相关代理商/技术参数 |
参数描述 |
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| VNC1L-1A-REEL | 功能描述:USB 接口集成电路 USB Vinculum Host /Dev Ctrl IC LQFP-48 RoHS:否 制造商:Cypress Semiconductor 产品:USB 2.0 数据速率: 接口类型:SPI 工作电源电压:3.15 V to 3.45 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:WLCSP-20 |
| VNC1L-1A-TRAY | 功能描述:USB 接口集成电路 USB Vinculum Host /Dev Ctrl IC LQFP-48 RoHS:否 制造商:Cypress Semiconductor 产品:USB 2.0 数据速率: 接口类型:SPI 工作电源电压:3.15 V to 3.45 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:WLCSP-20 |
| VNC2 | 制造商:FTDI 制造商全称:FTDI 功能描述:VNC2 Debug Module |
| VNC2 DEBUG MODULE | 功能描述:界面开发工具 USB Vinculum-II Debug/Programmer Mod RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
| VNC214B-15A-1D | 制造商:SMC Corporation of America 功能描述:Valve, media, solenoid, body port, 1/2 inch |
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