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C-22
Sun Ultra 5 Service Manual • February 2000
C.1.6.1
SuperIO
The SuperIO is a chip device that provides the following functions:
■
On-chip diskette controller
■
Two standard 16550 UARTs used for the serial mouse and keyboard
■
Parallel port
■
Mixed voltage support
■
100-pin PQFP
Serial Ports/Keyboard and Mouse
The on-chip serial ports are used as the mouse and keyboard devices because the
system does not have fast and synchronous serial ports. The following figure is a
functional block diagram of the serial port.
FIGURE C-11
Standard Serial Port Functional Block Diagram
Parallel Port
■
IEEE 1284-compatible parallel port
All five modes supported:
■
Compatible mode
■
Nibble mode
■
Byte mode
■
ECP
■
EPP
One legacy DMA channel is supported
KBD_IN
MOUSE_IN
KBD_OUT
SIN0
SOUT0
SIN1
SOUT1
RC (EMI) NETW
ORK
POWERON_L
To power supply
SP0
SP1
SuperIO
KBD_IN
KBD_OUT
MOUSE_IN
POWERON_L
Keyboard/
mouse connector
Summary of Contents for Ultra 5
Page 12: ...xii Sun Ultra 5 Service Manual February 2000...
Page 46: ...1 8 Sun Ultra 5 Service Manual February 2000...
Page 72: ...3 24 Sun Ultra 5 Service Manual February 2000...
Page 102: ...4 30 Sun Ultra 5 Service Manual February 2000...
Page 112: ...5 10 Sun Ultra 5 Service Manual February 2000...
Page 168: ...8 22 Sun Ultra 5 Service Manual February 2000...
Page 186: ...A 10 Sun Ultra 5 Service Manual February 2000...
Page 246: ...D 6 Sun Ultra 5 Service Manual February 2000...