ocr: Macintosh Serial Port Pinouts I 0 e 7 6 - 5 4 3 3 2 1 FEMALE CONNECTOR MALE CONNECTOR (ON THE MACINTOSH) (ON THE CABLE) Front Diew RS422 Outer case Protective ground Pin 1 DTR (Handshake output) Pin 2 DSR (Handshake input) Pin 3 TxD- (Transmit Data Line) Pin 4 Signal Ground Pin 5 RxD- (Receive Data Line) Pin 6 TxD+ (Transmit Data Line) Pin 7 No connection Pin 8 RxD+ (Receive Data Line) [Gnd to emulate RS-232] NOTES e RS 422 standard uses 2 lines for both transmit and receive, at +5V and -5V with respect to signal ground. - RS232 standard uses 1 line for both transmit and receive, at -12V with ...
(.png)
