Usb Interface - Samsung SRP-275 Service Manual

3-5-2(c) IEEE1284 I/F Cable

3-5-3 USB Interface

SRP-275 support the USB (Universal Serial Bus) Communication.
3-5-3(a) Specification
Item
Transfer type
Data Signal
Data format
Transceiver
Speed
Power
Cable & connector
Other
3-5-3(b) Signal Description
Pin No. Signal name
Shell Shield
1 VBUS
2 D-
3 D+
4 GND
3-5-3(c) USB I/F Cable
Rev. 2.00
Description
• BULK
• Bi-direction, Half-duplex
• Differential signal pair (D+ / D-)
• NRZI format
• Zero bit stuffing after 6 ones
• Differential receive sensitivity : 200 mV
• Differential common mode range : 0.8~2.5 V
• Single-end receiver threshold : 0.8~2.0 V
• 12 Mbps
• Self-powered
• Cable : 5m / 2m
• Connector : A/B type
• Support USB spec V1.1
Assignment (Color)
Drain wire
Red
White
Green
Black
- 46 -
Function
Frame ground
NC
Differential data line
Differential data line
Signal ground
SRP-275
Remark