upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 356

• Manufacturer Part Number: upd78f0730
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

12.7.1 Initialization processing
returned is written and an endpoint is allocated to an interface. In the interrupt settings, the interrupt sources that do
not have to be checked can be masked by using the UF0IMn register (n = 0 to 4).
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Initialization processing is executed in the following two ways.
• Initialization of request data register
• Setting of interrupt
When the request data register is initialized, data for the GET_XXXX request to which a value is to be automatically
The following flowcharts illustrate the above processing.
Remark
n = 0 to 255
UF0E0NA register = 00H
UF0E0NA register = 01H
Initialization of request
UF0MODC register =
Setting of interface
EP0NKA = 1?
and endpoint
data register
(UF0E0NA)
40H or 00H
START
END
Yes
CHAPTER 12 USB FUNCTION CONTROLLER (USBF)
Figure 12-9. Initializing Request Data Register
Preliminary User’s Manual U19014EJ1V0UD
:
:
See Figure 12-10 Initialization of Request Data Register.
See Figure 12-11 Setting of Interface and Endpoint.
If the total number of bytes of the UF0CIEn register exceeds 256,
set the UF0MODC register to 40H. No data has to be written to
the UF0CIEn register.
Cancels NAK response to Endpoint0.
No