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Нижегородский Государственный Технический Университет им. Р.Е. Алексеева

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[НЕСОРТИРОВАННОЕ]

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usb_2.0_english

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Universal Serial Bus Specification Revision 2.0

Host			Hub	FS/LS
(data toggle)			(status)	device
				(data toggle)
0			Old/x	0
st1	SSPLIT	st1
		st1
st2	OUT/SETUPst2
	OUT/SETUPst2
sd1	DATA0	sd1
		sd1
sh1	ACK	sh1	Pending/x
sh1

OUT/SETUP

DATA0

STALL

Ready/stall

ct1	CSPLIT	ct1
		ct1
ct2	OUT/SETUPct2
	OUT/SETUPct2
	STALL	Old/stall
ch2	STALL	ch2
ch2

ENDPOINT HALT

Figure A-23. Device Stall No Smash(FS/LS STALL)

463

Universal Serial Bus Specification Revision 2.0

A.2 Bulk/Control IN Transaction Examples

Legend:

(S): Start Split

(C): Complete Split

Summary of cases for bulk/control IN transaction

• Normal cases

	Case	Reference	Similar figure
		figure

No smash

HS SSPLIT smash

HS SSPLIT 3 strikes smash

HS IN(S) smash

HS IN(S) 3 strikes smash

HS ACK(S) smash

HS ACK(S) 3 strikes smash

Figure A-24

Figure A-25

Figure A-26

Figure A-27

Figure A-28

Figure A-29

Figure A-25

Figure A-26

HS CSPLIT smash	Figure A-30

HS CSPLIT 3 strikes smash	Figure A-31

HS IN(C) smash		Figure A-30

HS IN(C) 3 strikes smash		Figure A-31

HS DATA0/1 smash	Figure A-32

HS DATA0/1 3 strikes smash	Figure A-33

FS/LS IN smash	Figure A-34

FS/LS IN 3 strikes smash	Figure A-35

FS/LS DATA0/1 smash	Figure A-36

FS/LS DATA0/1 3 strikes smash	Figure A-37

464

Universal Serial Bus Specification Revision 2.0

FS/LS ACK smash	Figure A-38

FS/LS ACK 3 strikes smash	No figure

•No buffer(on hub) avallable cases

Case	Reference	Similar figure
	figure

No smash(HS NAK(S))	Figure A-39

HS NAK(S) smash	Figure A-40

HS NAK(S) 3 strikes smash	Figure A-41

•CS(Complete-split transaction) earlier cases

	Case	Reference	Similar figure
		figure

	No smash(HS NYET)	Figure A-42

	HS NYET smash	Figure A-43
		Figure A-44

	HS NYET 3 strikes smash	No figure

• Device busy cases

	Case	Reference	Similar figure
		figure

	No smash(HS NAK(C))	Figure A-45

	HS NAK(C) smash		Figure A-32

	HS NAK(C) 3 strikes smash		Figure A-33

	FS/LS NAK smash		Figure A-36

	FS/LS NAK 3 strikes smash		Figure A-37

465

Universal Serial Bus Specification Revision 2.0

• Device stall cases

	Case	Reference	Similar figure
		figure

	No smash	Figure A-46

	HS STALL(C) smash		Figure A-32

	HS STALL(C) 3 strikes smash		Figure A-33

	FS/LS STALL smash		Figure A-36

	FS/LS STALL 3 strikes smash		Figure A-37

Host			Hub	FS/LS
(data toggle)			(status)	device
				(data toggle)
0			Old/x	0
st1	SSPLIT	st1
		st1
st2	IN	st2
		st2
sh1	ACK	sh1	Pending/x
sh1
				IN
				DATA0
			Ready/data	ACK
				1
ct1	CSPLIT	ct1
		ct1
ct2	IN	ct2
		ct2
ch5	DATA0	cd1	Old/data
ch5
1

Figure A-24. Normal No Smash

466

Universal Serial Bus Specification Revision 2.0

Host			Hub
(data toggle)			(status)
0			Old/x
st1	SSPLIT
st2	IN
			Hub ignores this
			IN.
			(no match the
			address field.)
TRANS_ERR
se4->se2
st1	SSPLIT(retry)
st1		st1
		st1
st2	IN	st2
		st2
sh1	ACK	sh1	Pending/x
sh1

			Ready/data
ct1	CSPLIT	ct1
		ct1
ct2	IN	ct2
		ct2
ch5	DATA0	cd1	Old/data
ch5

Figure A-25. Normal HS SSPLIT Smash

FS/LS device

(data toggle) 0

DATA0

ACK

467

Universal Serial Bus Specification Revision 2.0

Host

(data toggle)

st1 SSPLIT

st2 IN

TRANS_ERR

se4->se2

st1 SSPLIT(retry)

st2 IN

TRANS_ERR

se4->se2

st1 SSPLIT(retry)

st2 IN

TRANS_ERR

se4->se3

Hub

(status)

Old/x

Hub ignores this IN.

(no match the address field.)

Hub ignores this IN.

(no match the address field.)

Hub ignores this IN.

(no match the address field.)

ENDPOINT HALT

Figure A-26. Normal SSPLIT 3 Strikes Smash

FS/LS device

(data toggle) 0

468

Universal Serial Bus Specification Revision 2.0

Host		Hub	FS/LS
(data toggle)		(status)	device
			(data toggle)
0		Old/x	0
st1	SSPLIT	st1
		st1
st2	IN	st2
		st2
	ACK	Pending/x
	ACK	sh1
TRANS_ERR
se4->se2
st1	SSPLIT(retry)
st1		st1
		st1
st2	IN	st2
		st2
sh1	ACK	sh2
sh1

DATA0

Ready/data

ACK

ct1	CSPLIT	ct1
		ct1
ct2	IN	ct2
		ct2
ch5	DATA0	cd1	Old/data
ch5

Figure A-27. Normal HS ACK(S) Smash(case 1)

469

Universal Serial Bus Specification Revision 2.0

Host			Hub	FS/LS
(data toggle)			(status)	device
				(data toggle)
0			Old/x	0
st1	SSPLIT	st1
		st1
st2	IN	st2
		st2
	ACK	sh1	Pending/x
	ACK	sh1
				IN
TRANS_ERR
se4->se2				DATA0
st1	SSPLIT(retry)		Ready/data	ACK
st1		st1
		st1		1
st2	IN			1
st2	IN	st2
		st2
sh1	ACK	sh2
sh1

ct1	CSPLIT	ct1
		ct1
ct2	IN	ct2
		ct2
ch5	DATA0	cd1	Old/data
ch5

Figure A-28. Normal HS ACK(S) Smash(case 2)

470

Universal Serial Bus Specification Revision 2.0

Host			Hub	FS/LS
(data toggle)			(status)	device
				(data toggle)
0			Old/x	0
st1	SSPLIT	st1
		st1
st2	IN	st2
		st2
	ACK	sh1	Pending/x
	ACK	sh1
				IN
TRANS_ERR
se4->se2				DATA0
st1	SSPLIT(retry)		Ready/data	ACK
st1		st1	Ready/data	ACK
		st1
st2	IN	st2		1
		st2
	ACK	sh2
TRANS_ERR
se4->se2
st1	SSPLIT(retry)
st1		st1
		st1
st2	IN	st2
		st2

ACK sh2

TRANS_ERR

se4->se3

ENDPOINT HALT

Figure A-29. Normal HS ACK(S) 3 Strikes Smash

471

Universal Serial Bus Specification Revision 2.0

Host			Hub
(data toggle)			(status)
0			Old/x
st1	SSPLIT	st1
		st1
st2	IN	st2
		st2
sh1	ACK	sh1	Pending/x
sh1

Ready/data

ct1	CSPLIT
ct2	IN

Hub ignores this IN.

(no match the

address field.)

TRANS_ERR

ce6->ce4

ct1	CSPLIT(retry imm.)
ct1		ct1
		ct1
ct2	IN	ct2
		ct2
ch5	DATA0	cd1	Old/data
ch5

Figure A-30. Normal HS CSPLIT Smash

FS/LS device

(data toggle) 0

DATA0

ACK

472

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