10 - 26 DS7708 2D Vertical Slot Scanner Product Reference Guide
Multipacket Option
SSI # F0h, 4Eh
Parameter # 334
This parameter controls ACK/NAK handshaking for multi-packet transmissions.
•
Multi-Packet Option 1: The host sends an ACK / NAK for each data packet during a multi-packet
transmission.
•
Multi-Packet Option 2: The decoder sends data packets continuously, with no ACK/NAK handshaking
to pace the transmission. The host, if overrun, can use hardware handshaking to temporarily delay
decoder transmissions. At the end of transmission, the decoder waits for a CMD_ACK or CMD_NAK.
•
Multi-Packet Option 3: Option 3 is the same as option 2 with the addition of a programmable interpacket
delay.
*Multipacket Option 1
(00h)
Multip
acket Option 2
(01h)
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