Features; I/O Registers - Advantech MIC-3329 Series User Manual

C.1

Features

 Power Sequence
 Hot-Swap: Hot insertion and removal
 LPC Bus: Provides LPC Bus access
 Watchdog
 2x SPI Cross-Switch: Dedicated SPI cross-switch for BIOS
 Debug Message: Boot time POST message
C.2

I/O Registers

The Advantech MIC-3329 EC communicates with main I/O. The LPC bus connects
®
the Intel LPC signals. The Debug Port Unit is used to decode POST codes. The
watchdog is used to detect BIOS ready signals or recover BIOS code from redundant
BIOS flash. The hot-swap out-of-service LED control unit is used to control the blue
LED during hot-insert and hot-remove. The other signals in the miscellaneous unit
are for interfacing with corresponding I/O interface signals.
Table C.1: LPC I/O Register Addresses
Address
0x80h
Other registers are accessed by ISA I/O, index port 0x272, data port 0x273.
Table C.2: LPC I/O Register Addresses
Address
0x90h~0x91h
0x92h
0x93h~0x94h
0x95h~0x96h
0x97h
0x98h
0x99h
0x9Ah
0x9Bh
0x9Ch
0x9Dh
0x9Eh
0x9Fh
MIC-3329 User Manual
I/O Type
W
I/O Type Description
R Manufacture ID
R/W Dual BIOS switch display
R/W Watchdog Register
R EC Device ID
R EC Chip Revision ID
R/W GPO2 LED Control Register
R Power Status
R GA Status
R GPIO Input Status
R/W GPIO Output Value
R/W GPIO Input/Output Settings
R Port 80h Status
R/W GPO1 LED Control
50
Description
Port 80 Display