Specifications

Product Technical Specification & Customer Design Guidelines
Interfaces
3.20 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 VUSB.
The USB interface signals are VUSB, USBDP, USBDN and GND.
3.20.1 Features
¾
12Mbit/s full speed transfer rate
¾ 3.3V typ. compatible
¾ USB Soft connect feature
¾ Download feature is not supported by USB
¾ CDC 1.1 – ACM compliant
Electrical characteristics of the signals
Parameter Min Typ Max Unit
VUSB, USBDP, USBDN 3 3.3 3.6 V
VUSB Input current consumption 8 mA
Note
:
A 5V to 3.3V typ. voltage regulator is needed between the external interface power in
line (+5V) and the Q64 line (VUSB).
3.20.2 Pin Description
Signal Pin I/O I/O type Description Multiplexed
number with
49
VUSB I VUSB USB Power
Supply
Not mux
45 Not mux
USBDP I/O VUSB Differential
data interface
positive
USBDN 46 I/O VUSB Differential
data interface
negative
Not mux
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prior written agreement.
WA_DEV_Q64_PTS_001-003 January 9, 2009