McCain 2070LX - Page 16

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SP3_RXD: Receive Data (I)
SP3_RTS: Request To Send (O)
SP3_CTS: Clear To Send (I)
SP3_CD: Carrier Detect (I)
SP3_TXC_INT: Transmit Clock Internal (O)
SP3_TXC_EXT: Transmit Clock External (I)
SP3_RXC_EXT: Receive Clock External (I)
Serial Port 4 (SP-4):
Usage: External user interface and general purpose.
Location: available at the DIN-96 connector.
Operating modes: Asynchronous.
Async rates (bps): 1200, 2400, 4800, 9600, 19.2k, 38.4k / Optional: 57.6k, 115.2k
Interface pins:
SP4_TXD: Transmit Data (O)
SP4_RXD: Receive Data (I)
Serial Port 5 (SP-5):
Usage: To handle in-cabinet devices.
Location: available at the DIN-96 connector.
Operating modes: Synchronous, HDLC, SDLC.
Sync rates (bps): 153.6k, 614.4k.
Interface pins:
SP5_TXD: Transmit Data (O)
SP5_RXD: Receive Data (I)
SP5_TXC_INT: Transmit Clock Internal (O)
SP5_RXC_EXT: Receive Clock External (I)
Serial Port 6 (SP-6):
Usage: Front panel user interface.