Datasheet

V850ES/JG3-H, V850ES/JH3-H CHAPTER 21 USB FUNCTION CONTROLLER (USBF)
R01UH0042EJ0500 Rev.5.00 Page 1230 of 1513
Aug 12, 2011
Figure 21-33. DMA Processing by Bulk Transfer (IN) (3/4)
(1)
INTUSBF0 active
DMA request for Endpoint1 inactive
BKI1NK = 1 (UF0EN)
Note
BKI1DT = 1 (UF0IS2)
Note
DQE1 = 0 (UF0DMS0)
DEDE1 = 1 (UF0DMS1)
DMAED = 1 (UF0IS0)
DQBI1MS = 0 (UF0IDR)
DQE1 = 0 (UF0DMS0)
DEDE1 = 1 (UF0DMS1)
DMAED = 1 (UF0IS0)
DQBI1MS = 0 (UF0IDR)
Yes
DMAED = 1?
(UF0IS0)
No
Yes
DEDE1 = 1?
(UF0DMS1)
No
No
Yes
Yes
BKI1T = 1?
(UF0DEND)
FIFO full?
No
Reading UF0ISn register
Reading UF0DMSn register
(4)
Illegal processing
Illegal processing
Note The timing of the bit value changes depending on the status on the SIE side.
Remarks 1. n = 0, 1
2. ♦: Processing by hardware