Motorola DS6707-DP20411ZZR Reference Guide - Page 99

SSI Interface 6 - 7 Check Parity Parameter # 97h Select whether or not to check the parity of received characters. Use the Parity parameter to select the type of parity. *Check Parity (01h) Do Not Check Parity (00h) Software Handshaking Parameter # 9Fh This parameter offers control of the data transmission process in addition to that offered by hardware handshaking. Hardware handshaking is always enabled and cannot be disabled by the user. • Disable ACK/NAK Handshaking: If you select this option, the decoder neither generates nor expects ACK/NAK handshaking packets. • Enable ACK/NAK Handshaking: If you select this option, after transmitting data, the digital imager scanner expects either an ACK or NAK response from the host. The digital imager scanner also ACKs or NAKs messages from the host. The digital imager scanner waits up to the programmable Host Serial Response Time-out to receive an ACK or NAK. If the scanner does not get a response in this time, it resends its data up to two times before discarding the data and declaring a transmit error. Disable ACK/NAK (00h) *Enable ACK/NAK (01h)