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 

TABLE 48 - PC/AT AND PS/2 AVAILABLE REGISTERS

AVAILABLE REGISTERS

BASE +

PC-AT PS/2 (MODEL 30) ACCESS PERMITTED

ADDRESS

Access to these registers DOES NOT wake up the part

00H

----

SRA

R

01H

----

SRB

R

02H

DOR (1)

DOR (1)

R/W

03H

---

---

---

04H

DSR (1)

DSR (1)

W

06H

---

---

---

07H

DIR

DIR

R

07H

CCR

CCR

W

Access to these registers wakes up the part

04H

MSR

MSR

R

05H

Data

Data

R/W

Note 1: Writing to the DOR or DSR does not wake up the part, however, writing any of the

motor enable bits or doing a software reset (via DOR or DSR reset bits) will wake up

the part.

TABLE 49 - STATE OF SYSTEM PINS IN AUTO POWERDOWN

SYSTEM PINS STATE IN AUTO POWERDOWN

INPUT PINS

nIOR

Unchanged

nIOW

Unchanged

SA[0:9]

Unchanged

SD[0:7]

Unchanged

RESET_DRV

Unchanged

DACKx

Unchanged

TC

Unchanged

OUTPUT PINS

IRQx

Unchanged (low)

SD[0:7]

Unchanged

DRQx

Unchanged (low)

113

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