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 

RTC, Logical Device 6

TABLE 81 - RTC, LOGICAL DEVICE 6 [LOGICAL DEVICE NUMBER = 0X06]

NAME

REG INDEX

DEFINITION

STATE

RTC Mode Register 0xF0 R/W Bit[0] = 1 : Lock CMOS RAM 00-1Fh in Bank 1

C

Bit[1] = 1 : Lock CMOS RAM 20-3Fh in Bank 1

Default = 0x00

Bit[2] = 1 : Lock CMOS RAM 40-5Fh in Bank 1

on Vcc POR or

Bit[3] = 1 : Lock CMOS RAM 60-7Fh in Bank 1

Reset_Drv

Bits[5:4] RTC Bank Selection

=00 Bank 1 at Secondary Base Address, Bank 0

Off (Default)

=01 Bank 0 at 70h and Bank 1 at Secondary Base

Address (Note 1)

=10 No Bank Selected

=11 Bank 0 at 70h, Bank 1 Off

Bit[7:6] Reserved

Note: Once set, bits[3:0] can not be cleared by a

write; bits[3:0] are cleared only on Vcc Power On

Reset or upon a Hard Reset.

Note 1: The secondary base address must be set to a value other than 70h prior to selecting this

option.

193

Share Link: