Q2686

Manufacturer Part NumberQ2686
DescriptionWireless CPU
ManufacturerWavecom
Q2686 datasheet
 
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Page 67/89

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3.22
USB 2.0 Interface
A 4-wire USB slave interface is available which complies with USB 2.0 protocol
signaling. But it is not compliant with the electrical interface, due to the 5V of
VPAD-USB.
The USB interface signals are VPAD-USB, USB-DP, USB-DM and GND.
USB interface features:
12Mbit/s full-speed transfer rate
www.DataSheet4U.com
3.3V typ compatible
USB Softconnect feature
Download feature is not supported by USB
CDC 1.1 – ACM compliant
NOTE:
A 5V to 3.3V typ voltage regulator is needed between the external interface
power in line (+5V) and the Wireless CPU
Signal
VPAD-USB
USB-DP
USB-DM
VPAD-USB, USB-DP, USB-DM
VPAD-USB Input current consumption
VPAD-USB, USB-DP, USB-DM
This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged without
prior written agreement.
WM_PRJ_Q2686_PTS_001-007
®
line (VPAD-USB).
Pin description of the USB interface
Pin
I/O
I/O type
number
52
I
VPAD_USB
54
I/O
VPAD_USB
56
I/O
VPAD_USB
Differential data interface negative
Electrical characteristics of the signals
Parameter
Parameter
confidential ©
Q2686 Wireless CPU
Interfaces
Description
USB Power Supply
Differential data interface positive
Min
Typ
Max
3
3.3
3.6
8
Min
Typ
Max
3
3.3
3.6
®
Unit
V
mA
Unit
V
Page: 66 / 87
March 6, 2007