Mindeo FS580, Руководство пользователя

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98
6-3 Transaction examples
RXD
(Host TXD)
TXD
(Host RXD)
1
2
T
1.Scanner transmits decoded data (data packet)
2.Host sends an ACK
Note: T is determined by host.
Figure 6-1 Basic decoder initiated transaction (data packet)
RXD
(Host TXD)
TXD
(Host RXD)
4
1
T
1
（15ms）
2
3
BEEP
T2
T3
1.Host sends 0x00 to wakeup scanner
2.Host sends BEEP command
3.Beeper of scanner beeps
4.Scanner sends an ACK
Note: T
1
is determined by host(T
1
= 15ms),T
2
and T
3
are determined by scanner(T
2
≈380us，
T
3
≈150us).
Figure 6-2 Basic host initiated transaction