
9
The Serial InterfaceThe Serial Interface
Macintosh computers require an 8-pin
mini-DIN hardware handshaking cable for
high-speed communications. This cable is
included in your Sportster for Macintosh
package.
Hardware Handshaking Cable PinHardware Handshaking Cable Pin
AssignmentsAssignments
Mini DIN-8 DB-25
Connector
Handshake Output HSKo 1 4 RTS
20 DTR
Handshake Input HSKi 2 5 CTS
Transmit Data+ TXD- 3 2 TXD
Ground GND 4 7 GND
Receive Data+ RXD+ 8 7 GND
Receive Data- RXD- 5 3 RXD
Transmit Data+ TXD+ 6 not connected
Gen. Purpose Input GPI 7 not connected
Note: The Handshake Output pin is connected to both
pins 4 (RTS) and 20 (DTR) on the DB-25 connector.
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