 4 pin USB A or USB B MALE connector at the controller |
Pin
|
Name
|
Description |
1 |
VCC
|
+5 VDC
|
2 |
D-
|
Data - |
3 |
D+
|
Data + |
4 |
GND
|
Ground
|
Features: - True Plug'n'Play.
- Hot plug and unplug
- Low cost
- Easy of use
- 127 physical devices
- Low cost cables and connectors
Uses:- Keyboards, mice, joysticks, modems
Bandwidth: - Full speed: 12 Mbps speed (requires shielded cable)
- Low speed: 1.5 Mbps speed (non-shielded cable)
Definitions:USB Host = The computer, only one host per USB system. USB Device = A hub or a Function. Power usage:Bus-powered hubs: Draw Max 100 mA at power up
and 500 mA normally. Self-powered hubs: Draw Max 100 mA, must supply
500 mA to each port. Low power, bus-powered functions: Draw Max 100
mA. High power, bus-powered functions: Self-powered
hubs: Draw Max 100 mA, must supply 500 mA to each port. Self-powered functions: Draw Max 100 mA. Suspended device: Max 0.5 mA Voltage: - Supplied voltage by a host or a powered hub ports is
between 4.75 V and 5.25 V.
- Maximum voltage drop for bus-powered hubs is 0.35 V from
it's host or hub to the hubs output port.
- All hubs and functions must be able to send configuration
data at 4.4 V, but only low-power functions need to be
working at this voltage.
- Normal operational voltage for functions is minimum 4.75
V.
Shielding:Shield should only be connected to Ground at the host. No
device should connect Shield to Ground. Cable:Shielded: Data: 28 AWG twisted Power: 28 AWG - 20 AWG non-twisted Non-shielded: Data: 28 AWG non-twisted Power: 28 AWG - 20 AWG non-twisted Power Gauge | Max length | 28 | 0.81 m | 26 | 1.31 m | 24 | 2.08 m | 22 | 3.33 m | 20 | 5.00 m | Cable colors: Pin | Name | Cable color | Description | 1 | VCC | Red | +5 VDC | 2 | D- | White | Data - | 3 | D+ | Green | Data + | 4 | GND | Black | Ground |
|  4 pin USB A or USB B FEMALE connector at the peripherals |