Star Micronics TSP552II Manuel d'utilisateur Page 107

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APPENDIX
C-2-1. Interface specifications
(a) Forward channel
The forward channel mode is the mode in which the widely used
Centronics interface is regulated.
• Data transfer method: 8 bit parallel
• Synchronizing system: Externally supplied nStrobe signal
• Handshake: nAck signal and Busy signal
• Signal level: All signals are TTL compatible.
(b) Reverse channel
The transfer of status data from the printer to the host is only carried in the
nibble mode.
C-2. Two-way parallel interface (IEEE1284)
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