48
7641 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
[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
register are also set to “0” when the USB block is disabled (bit 7 of
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)
b0
b7
0
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)
b0
b7
00000
Fig. 38 Structure of USB address register
Fig. 39 Structure of USB power management register