Deltawtyutq (Ziyaretçi)
| | 148 TSR 231 TTL logic 49 TVS diode 69 twisted-pair cable 131-134 RS-232 and 68 TX 45 TXD 45 TXREG 231, 238 TXSTA 231-233, 236 Type 1 cable 133 u UART 16550 263 chip 263 clock 15-16 defined 4-5 errors 217-218 external 263-265 firmware-only 263 responsibilities 14 USB bridge chip 325 See also PIC18F4520 UDP 37 UnauthorizedAccessException 159 unbalanced interfaces 58-59 Unicode 19-22 .NET and 173-176 union functional descriptor 349, 352 unit load 86-87 Universal Asynchronous Transmitter/Receiver. See UART Universal Serial Bus. See USB USART 14 See also UART USB ACK 322, 323 bulk transfers 321, 324 bus speed 320 composite device 356-362 configuration, USB 318 control transfer 321, 324 converting to RS-232 332-334 data packet 322 Data stage 321 data toggle 323 descriptors, abstract control model 346356 descriptors, composite CDC 360-361 device 317, 319 endpoint 320 enumeration 318 handshake packet 322 377 host 317, 318-319 interrupt transfers 322, 324 NAK 322 NYET 323 OTG 319 packet 322-323 packet ID PID 322 protocol analyzer 78 Setup stage 321 short packet 354 SIE 319 STALL 322 Status stage 321 Suspend state 319 token packet 322-323 transactions 322-323 transfer types 321-322 vs. other interfaces 3 USB FIFO. See FT245R USB Implementers Forum 317 USB UART. See FT232R; FT2232C USB virtual COM port 318 abstract control model and 340-362 driver, third party 339 FTDI controllers and 330 host driver 338-339 INF file 318 parallel interface and 328 serial number and 40 See also USB USB-IF 317 usbser.sys 38, 318, 338-339 hotfix 361 USBwiz 9 Using block 163 UTF-16 defined 21 .NET and 173-175, 176 UTF-32 21 UTF-8 defined 20 .NET and 175 V V.24 and V.28 43 V.250 24, 336 V.25ter 336, 339 virtual COM port VCP . See USB virtual COM port Vishay Semiconductors 148 Visual Basic. See code example PC ; SerialPort class Visual C#. See code example PC ; SerialPort class voltage margin. See noise: margin voltage, common mode 135-137 voltmeter 77 w Walter Oney Software 339 Wi-Fi 37, 154 w prom-electric.ru |
