Datasheet

Section 22 USB Function Module (USB)
Rev. 2.00 Aug. 20, 2008 Page 832 of 1198
REJ09B0403-0200
Figure 22.1 shows the block diagram of the USB.
Peripheral bus
Interrupt requests
Status and
control registers
FIFO
UDC
Transceiver
USB function module
D+
D-
Clock for USB
(48 MHz)
UDC: USB device controller
[Legend]
Figure 22.1 Block Diagram of USB
22.2 Input/Output Pins
Table 22.1 shows the USB pin configuration.
Table 22.1 Pin Configuration
Pin Name I/O Function
VBUS Input USB cable connection monitor pin
USD+ I/O USB data I/O pin
USD- I/O USB data I/O pin
DrVcc Input Power supply pin for USB built-in transceiver
DrVss Input Ground pin for USB built-in transceiver
PUPDPLS Output Pull-up control pin
UXTAL Input USB clock pin
UEXTAL Input USB clock pin
UXSEL Input USB clock select pin