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Section 20 USB Function Module
Rev. 4.00 Sep. 14, 2005 Page 788 of 982
REJ09B0023-0400
This LSI
USB module
General output port, etc.
IC that allows
voltage application
when the system (LSI)
power is off.
IC that allows
voltage application
when the system (LSI)
power is off.
USB
connector
USB
cable
VBUS
VBUS
TXENL
TXDMNS
TXDPLS
XVDATA
DPLS
GND
DMNS
SUSPND
+
-
SUSPND
PDIUSBP11 etc
VM
VP
RCV
OE
SPEED
VMO
VPO
D+
D-
Note: Operation cannot be guaranteed by this example.
When the system requires countermeasures against external surge
or ESD noise, use the protection diode or noise canceller.
5 V
3.3 V
Figure 20.18 Example of USB Function Module External Circuitry
(For External Transceiver)