R01UH0823EJ0100 Rev.1.00
Page 887 of 1823
Jul 31, 2019
RX23W Group
32. USB 2.0 Host/Function Module (USBc)
32.2.22
USB Request Length Register (USBLENG)
The USBLENG register stores setup requests for control transfers.
When the function controller is selected, the value of wLength that has been received is stored. When the host controller
is selected, the value of wLength to be transmitted is set.
The USBLENG register is initialized by a USB bus reset.
When the host controller is selected:
Set these bits to the value of the wLength field in USB requests of setup transactions for transmission. Do not
modify the value of the USBLENG register while the DCPCTR.SUREQ bit is 1.
When the function controller is selected:
These bits indicate the value of the wLength field in USB requests received in setup transactions for reception.
Writing to the USBLENG register has no effect.
Address(es): 000A 005Ah
b15
b14
b13
b12
b11
b10
b9
b8
b7
b6
b5
b4
b3
b2
b1
b0
Value after reset:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0