Freescale-semiconductor TWR-MCF52259-Ethenet Manual de usuario Pagina 127

  • Descarga
  • Añadir a mis manuales
  • Imprimir
  • Pagina
    / 166
  • Tabla de contenidos
  • MARCADORES
  • Valorado. / 5. Basado en revisión del cliente
Vista de pagina 126
TM
U
S
B
T
o
p
o
l
o
g
y
Introduction to USB
USB On-the-Go:
Initial declaration
Appendix A USB On-the-Go
D+
D-
VBUS
GND
ID
Mini-A plug
Mini-B plug
Dual-role
Device
Dual-role
Device
Mini-AB receptacle
Default Host Default Peripheral
A-device B-device
D+
D-
VBUS
GND
ID
When using A and B plugs, initially the device using the A plug is
declared the host and the one using the B plug is declared the
device. When using the mini-AB receptacle the ID plug pin declares
the initial state of a device as host or device. State is then changed
during host negotiations protocol by turning a pull-up resistor on
and off.
Vista de pagina 126
1 2 ... 122 123 124 125 126 127 128 129 130 131 132 ... 165 166

Comentarios a estos manuales

Sin comentarios