Datasheet

V850ES/JG3-H, V850ES/JH3-H CHAPTER 21 USB FUNCTION CONTROLLER (USBF)
R01UH0042EJ0500 Rev.5.00 Page 1059 of 1513
Aug 12, 2011
(3) USB function select register (UHCKMSK)
The UHCKMSK register controls the operation of the data-only RAM when the USB controller function is used.
Even when the USB function controller is not being used, the data-only RAM can be used by setting the
UHCKMSK register.
The UHCKMSK register can be read or written in 8-bit or 1-bit units.
Reset sets this register to 03H.
0UHCKMSK 0 0 0 0
0 1 UHMSK
After reset: 03H R/W Address: FFFFFF42H
UHMSK
0
1
Data-only RAM (8 KB) operation enabled
Use of USB host controller/data-only RAM (8 KB) disabled
USB controller function selection
7 6
543210
Caution Be sure to set bits 7 to 2 to ‘‘0’’, and bit 1 to ‘‘1’’.