Intel 820E User Manual

Design Guide 

 

25 

In the Intel 820E chipset platform, the super I/O component has migrated to the Low-Pin-Count (LPC) 
interface. Migration to the LPC interface enables lower-cost super I/O designs. The LPC super I/O 
component requires the same feature set as traditional super I/O components. It should include a 
keyboard and mouse controller, floppy disk controller, and serial and parallel ports. In addition to the 
super I/O features, an integrated game port is recommended because the AC’97 interface does not 
provide support for a game port. In systems with ISA audio, the game port typically existed on the audio 
card. The fifteen-pin game port connector provides for two joysticks and a two-wire MPU-401 MIDI 
interface. Consult your super I/O vendor for a comprehensive list of devices offered and features 
supported. 

In addition, depending on system requirements, a device bay controller and USB hub could be integrated 
into the LPC super I/O component. For systems requiring ISA support, an ISA-IRQ to serial-IRQ 
converter is required. This converter could be integrated into the super I/O.