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.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- Walter Oney Software 339
Wi-Fi 37 , 154
wIndex
in control transfers 321
in notifications 344
Windows
Device Manager 31 – 36
driver 38
driver (USB CDC) 338 – 339
driver (USB FTDI) 330
Ports class 39
real-time performance and 4
registry 39
Windows Driver Kit (WDK) 38
See also .NET; SerialPort class
Windows Telephony Application
Programming Interface 339