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3.16.10 Supplement
(1) External access flow to USB communication
a)
Normally movement
SETUP DATA0 ACK
INT_SETUP
INT_ ENDPOINT0
INT_STATUS
REQUEST FLAG
EP0 FIFO access
Request access
Setup Received access
EOP register access
b)
Stage error
SETUP DATA0 ACK
INT_SETUP
INT_ ENDPOINT0
INT_STATUS
REQUEST FLAG
EP0 FIFO access
Request access
Setup Received access
EOP register access
Stage error bit
STATUS register read
IN
NAK
IN
DATA1
IN
NAK
IN
DATA1
Normal
92CZ26A-452
ACK
IN
DATA0
ACK
ACK
IN
DATA0
ACK
TMP92CZ26A
OUT
DATA1
ACK
SETUP
DATA0
ACK
Stage error
Normal
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