7643 datasheet(64/424 Pages) RENESAS

64 / 424 page

Rev.2.00

Aug 28, 2006

page 47 of 103

REJ09B0133-0200

OVERVIEW

FUNCTIONAL DESCRIPTION

7643 Group

[USB Address Register] USBA

The USB address register maintains the USB function control unit

address assigned by the host computer. When receiving the

SET_ADDRESS, keep it in this register. The values of this register

are “0” when the device is not yet configured. The values of this

USB control register is set to “0”). In addition, no matter what

value is written to this register, it will have no effect on the set

value.

[USB Power Management Register] USBPM

The USB power management register is used for power manage-

ment in the USB FCU. This register needs to be set only when

using the remote wake-up to resume the MCU from suspend

mode.

USB address register (address 005016)

USBA

Programmable function address (FUNAD0 to 6))

This register maintains the 7-bit USB function control unit address

assigned by the host CPU.

Reserved bit (“0” at read/write)

USB power management register (address 005116)

USBPM

USB suspend detection flag (SUSPEND) (Read only)

0: No USB suspend detected

1: USB suspend detected

USB resume detection flag (RESUME) (Read only)

0: No USB resume signa detected

1: USB resume signal detected

USB remote wake-up bit (WAKEUP)

0: End of remote resume signal

1: Transmitting of remote resume signal (only when SUSPEND = “1”)

Reserved bit (“0” at read/write)

00000

Fig. 36 Structure of USB address register

Fig. 37 Structure of USB power management register

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