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Document #: 38-08027 Rev. *B Page 24 of 32
End Point Mode PID Set End Point Mode
3 2 1 0 token count buffer dval DTOG DVAL COUNT Setup In Out ACK 3 2 1 0 response int
0 0 1 0 Out !=2 UC valid updates 1 updates UC UC 1 UC 0 0 1 1 Stall yes
0 0 1 0 Out > 10 UC x UC UC UC UC UC UC UC UC UC UC UC ignore no
0 0 1 0 Out x UC invalid UC UC UC UC UC UC UC UC UC UC UC ignore no
0 0 1 0 In x UC x UC UC UC UC 1 UC UC 0 0 1 1 Stall yes
Out endpoint
Normal Out/erroneous In
1 0 0 1 Out <= 10 data valid updates 1 updates UC UC 1 1 1 0 0 0 ACK yes
1 0 0 1 Out > 10 junk x updates updates updates UC UC 1 UC NoChange ignore yes
1 0 0 1 Out x junk invalid updates 0 updates UC UC 1 UC NoChange ignore yes
1 0 0 1 In x UC x UC UC UC UC UC UC UC NoChange ignore no
NAK Out/erroneous In
1 0 0 0 Out <= 10 UC valid UC UC UC UC UC 1 UC NoChange NAK yes
1 0 0 0 Out > 10 UC x UC UC UC UC UC UC UC N oChange ignore no
1 0 0 0 Out x UC invalid UC UC UC UC UC UC UC NoChange ignore no
1 0 0 0 In x UC x UC UC UC UC UC UC UC NoChange ignore no
Isochronous endpoint (Out)
0 1 0 1 Out x updates updates updates updates updates UC UC 1 1 NoChange RX yes
0 1 0 1 In x UC x UC UC UC UC UC UC UC NoChange ignore no
In endpoint
Normal In/erroneous Out
1 1 0 1 Out x UC x UC UC UC UC UC UC UC NoChange ignore no
1 1 0 1 In x UC x UC UC UC UC 1 UC 1 1 1 0 0 ACK (back) yes
NAK In/erroneous Out
1 1 0 0 Out x UC x UC UC UC UC UC UC UC NoChange ignore no
1 1 0 0 In x UC x UC UC UC UC 1 UC UC NoChange NAK yes
Isochronous endpoint (In)
0 1 1 1 Out x UC x UC UC UC UC UC UC UC NoChange ignore no
0 1 1 1 In x UC x UC UC UC UC 1 UC UC NoChange TX yes
Table 29.Details of Modes for Differing Traffic Conditions (continued)
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