FDC37B78X View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

Manufacturer

FDC37B78X

Enhanced Super I/O Controller with ACPI Support, Real Time Clock and Consumer IR

SMSC -> Microchip 

Programming Example

The following is an example of a configuration program in Intel 8086 assembly language.

;----------------------------.

; ENTER CONFIGURATION MODE |

;----------------------------'

MOV DX,3F0H

MOV AX,055H

CLI ; disable interrupts

OUT DX,AL

STI ; enable interrupts

;-------------------------------.

; CONFIGURE REGISTER CRE0,

|

; LOGICAL DEVICE 8

|

;-------------------------------'

MOV DX,3F0H

MOV AL,07H

OUT DX,AL ; Point to LD# Config Reg

MOV DX,3F1H

MOV AL, 08H

OUT DX,AL ; Point to Logical Device 8

;

MOV DX,3F0H

MOV AL,E0H

OUT DX,AL; Point to CRE0

MOV DX,3F1H

MOV AL,02H

OUT DX,AL; Update CRE0

;-------------------------------.

; EXIT CONFIGURATION MODE

|

;-------------------------------'

MOV DX,3F0H

MOV AX,0AAH

OUT DX,AL

Notes: 1. HARD RESET: RESET_DRV pin asserted

2. SOFT RESET: Bit 0 of Configuration Control register set to one

3. All host accesses are blocked for 500µs after Vcc POR (see Power-up Timing Diagram)

171

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