Receive Bank Switching Id Detection Buffer Operation; Flowchart Of Receive Bank Switching Id Detection Buffer Operation - NEC switch User Manual

8.8.2 Receive bank switching ID detection buffer operation

Figure 8-26. Flowchart of Receive Bank Switching ID Detection Buffer Operation
00B
N
TOSTAT: Bit 0 of packet receive status register (RXSTAT)
DASTAT: Bit 1 of packet receive status register (RXSTAT)
HSSTAT: Bit 2 of packet receive status register (RXSTAT)
CHAPTER 8
Idle state
Sync1 detection
signal = 1?
Y
2-bit store & shift
Bit judgment enable
Store bit ?
01B
Set TOSTAT
Y
Bit judgment mask
1-bit store & shift
EOP received?
Y
Set buffer to 00H
Idle state
User's Manual U12978EJ3V0UD
USB FUNCTION
11B
Set DASTAT Set HSSTAT
10B
147