NEC mPD78F0730 Preliminary User's Manual page 341

(6) UF0 configuration register (UF0CNF)
This register stores the value that is to be returned in response to the GET_CONFIGURATION request.
This register is read-only, in 8-bit units.
When the SET_CONFIGURATION request is received, its wValue is automatically written to this register.
When a change of the value of this register from 00H to other than 00H is detected, the CONF bits of
UF0MODS register are set to 1. If the SET_CONFIGURATION request is processed by FW, the status of this
register is immediately reflected on the UF0MODS register as soon as data has been written to this register
(CONF bits = 1 before completion of the status stage).
Caution Do not perform write access to this register. Operation is not guaranteed if this register is
UF0CNF
Bit position
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CHAPTER 12 USB FUNCTION CONTROLLER (USBF)
written.
7 6 5
0 0 0
Bit name
1, 0 CONF1, These bits hold the data to be returned in response to the GET_CONFIGURATION
CONF0 request.
4 3 2
0 0 0
Preliminary User's Manual U19014EJ1V0UD
1 0 Address
CONF1 CONF0 FF91H
Function
After reset
00H
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