Rev. 05-21-04

4

SMSC DME1737

PRODUCT PREVIEW

Block Diagram

Figure 1 DME1737 Block Diagram

LEDs

Internal Bus

(Data, Address, and Control lines)

Power Mgmt

IO_PME_S5*

IO_SMI*

GP1[0:4]*,

GP21*,GP22*

GP27*,

GP32*,GP33*

GP36*, GP37* ,

GP4[0,2,3]*

GP5[0:1]*, GP6[0:1]*

Note 1: This diagram does not show power and

ground

connections.

Note 2: Signal names followed by an asterisk (*) are

located on multifunction pins.

This diagram is

designed to show the various functions available on

the chip and should not be used as a pin layout.

CLOCK

GEN

CLK32

CLOCKI

WDT

32 byte

Security

Key

Register

nDSR1, nDTR1

nDCD1, nRI1

Power Control

and Recovery

`

SLP_S3#,

SLP_S5#

PW RGD_CPU ,

PW RGD_3V

n3VSB_GAT E

n3V_GATE

nRSMRST

nFPRST, PB_IN#

PW RGD_PS

S

M

b

u

s

Hardware

Monitor

General

Purpose

I/O

IO_PME_S3*

WDT*

SER_IRQ

LAD[3:0]

LFrame#

LDRQ#

PCI_RESET#

PCI_CLK

LPC

Bus Interface

SERIAL

IRQ

SMbus

Isola-

tion

Switch

SDA1

SCLK1

SDA2

SCLK2

SMSC

Proprietary

82077

Compatible

Floppydisk

Controller with

Digital Data

Separator &

W rite Precom-

pensation

nRDATA,nW DATA

nDIR, nSTEP

nMTR0, nTRK0, InNDEX

DRVDEN0*,nW RTPRT

nW GATE,nHDSEL

nDSKCHG, nDS0,

High-Speed

16550A

UART

PORT 1

TXD1*, RXD1

nCTS1, nRTS1*

Multi-Mode

Parallel Port

with

MUX

(see

LPC47B27x)

PD[7,0]

BUSY, SLCT, PE,

nERROR, nACK

nSTROBE, nINIT,

nSLCTIN,nALF

Intruder

Detection

nINTRD_IN

Keyboard/Mouse

8042

controller

KCLK*,KDAT*

MCLK*,MDAT*

A20M*

nKBDRST*

PCI Reset

Outputs

nPCIRST_OUT[1:4]*

nIDE_RSTDRV*

Speaker

High-Speed

16550A

UART

PORT 2

TXD2(IRTX)*,

RXD2 (IRRX)*

DSR2*, DTR2*

DCD2*, RI2*

CTS2*, RTS2 *