Intel Pentium III Processor/840, Manual, Page: 43 / 151

Intel
®
Pentium
®
III Processor/840 Development Kit Manual 4-7
Hardware Reference
4.8.6 Serial Ports
Table 4-10 shows the signals assigned to the serial port connectors (J1M1 and J1N1). When
looking at the external side of the connectors, COM1 is the connector on the left (J1M1) and
COM2 is connector on the right (J1N1).
4.8.7 Audio/MIDI/Game Port Connectors
Table 4-11 shows the signals assigned to the audio mic-in connector (J1J1).
Table 4-12 shows the signals assigned to the audio line-in connector (J1K1 top).
Table 4-10. Serial Port Connector Pinout (J1M1 and J1N1)
Pin Signal Name
1 DCD
2 Serial In (SIN)
3 Serial Out (SOUT)
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
Table 4-11. Audio Mic-In Connector Pinouts (J1J1)
Pin Signal Name
Sleeve GND
Tip Mono In
Ring Mic bias voltage
Table 4-12. Audio Line-In Connector Pinouts (J1K1)
Pin Signal Name
Sleeve GND
Tip Audio Left In
Ring Audio Right In