Data Connect DSP19.2 Guia do Utilizador Página 46

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CY7C66013
C
CY7C66113
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Document #: 38-08024 Rev. *B Page 46 of 61
A
C
K
1. IN Token
H
O
S
T
D
E
V
I
C
E
S
Y
N
C
IN
A
D
D
R
C
R
C
5
E
N
D
P
S
Y
N
C
D
A
T
A
1/0
C
R
C
16
S
Y
N
C
Data
Token Packet Data Packet
Hand
Shake
Packet
UPDATE
Host To Device Device To Host
Host To Device
S
Y
N
C
IN
A
D
D
R
C
R
C
5
E
N
D
P
Token Packet
Host To Device
S
Y
N
C
Data Packet
Device To Host
NAK/STALL
UPDATE
2. OUT or SETUP Token without CRC error
S
Y
N
C
O
U
T
/
Set
up
A
D
D
R
C
R
C
5
E
N
D
P
Token Packet
Host To Device
S
Y
N
C
D
A
T
A
1/0
C
R
C
16
Data
Data Packet
Host To Device
SETUP
ACK,
NAK,
STAL
S
Y
N
C
Hand
Shake
Packet
UPDATE
Device To Host
3. OUT or SETUP Token with CRC error
S
Y
N
C
O
U
T
/
Set
up
A
D
D
R
C
R
C
5
E
N
D
P
Token Packet
Host To Device
S
Y
N
C
D
A
T
A
1/0
C
R
C
16
Data
Data Packet
Host To Device
UPDATE only if FIFO is
written
Figure 19-5. Token/Data Packet Flow Diagram
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