SCH5027E Super I/O with Temperature Sensing, Quiet Auto Fan and Glue Logic with

SCH5027E
Super I/O with Temperature Sensing, Quiet Auto Fan and
Glue Logic with PECI
Product Features
• General Features
- 3.3 Volt Operation (SIO Block is 5 Volt Tolerant)
- LPC Interface
- Programmable Wake-up Event Interface
- PC99, PC2001 Compliant
- ACPI 2.0 Compliant
- Multiplexed Command, Address and Data
Bus
- Serial IRQ Interface Compatible with Serialized IRQ Support for PCI Systems
- PME Interface
- ISA Plug-and-Play Compatible Register Set
- 25 General Purpose Input/Output Pins
- System Management Interrupt
- Operating Temperature Range of 0oC to
+70oC
• PECI Interface
- Supports PECI REQUEST# and PECI AVAILABLE signaling
• AC Power Failure Recovery
• Watchdog Timer
• 2.88MB Super I/O Floppy Disk Controller
- Licensed CMOS 765B Floppy Disk Controller
- Software and Register Compatible with
Microchip's Proprietary 82077AA Compatible
Core
- Supports One Floppy Drive
- Configurable Open Drain/Push-Pull Output
Drivers
- Supports Vertical Recording Format
- 16-Byte Data FIFO
- 100% IBM® Compatibility
- Detects All Overrun and Underrun Conditions
- Sophisticated Power Control Circuitry (PCC)
Including Multiple Powerdown Modes for
Reduced Power Consumption
- DMA Enable Logic
- Data Rate and Drive Control Registers
- 480 Address, Up to Eight IRQ and Three
DMA Options
- Support 3 Mode FDD
• Enhanced Digital Data Separator
- 2 Mbps, 1 Mbps, 500 Kbps, 300 Kbps, 250
Kbps Data Rates
- Programmable Precompensation Modes
 2014 Microchip Technology Inc.
• Serial Ports
- Two Full Function Serial Ports
- High Speed NS16C550A Compatible UARTs
with Send/Receive 16-Byte FIFOs
- Supports 230k and 460k Baud
- Programmable Baud Rate Generator
- Modem Control Circuitry
- 480 Address and 15 IRQ Options
• Infrared Port
- Multiprotocol Infrared Interface
- IrDA 1.0 Compliant
- SHARP ASK IR
- 480 Addresses, Up to 15 IRQ
• Multi-Mode™ Parallel Port with ChiProtect™
- Standard Mode IBM PC/XT®, PC/AT®, and
PS/2™ Compatible Bi-directional Parallel
Port
- Enhanced Parallel Port (EPP) Compatible EPP 1.7 and EPP 1.9 (IEEE 1284 Compliant)
- IEEE 1284 Compliant Enhanced Capabilities
Port (ECP)
- ChiProtect Circuitry for Protection
- 960 Address, Up to 15 IRQ and Three DMA
Options
• Keyboard Controller
- 8042 Software Compatible
- 8 Bit Microcomputer
- 2k Bytes of Program ROM
- 256 Bytes of Data RAM
- Four Open Drain Outputs Dedicated for Keyboard/Mouse Interface
- Asynchronous Access to Two Data Registers
and One Status Register
- Supports Interrupt and Polling Access
- 8 Bit Counter Timer
- Port 92 Support
- Fast Gate A20 and KRESET Outputs
• Motherboard GLUE Logic
- IDE Reset Output
- (4) Buffered PCI Reset Outputs with software
controlled reset capability - default transparent
- Front Panel Reset Debouncing and Power
Good Signal Generation
- Power Supply Turn On Circuitry with Support
for power button on PS/2 Keyboard
- Resume Reset Signal Generation
DS00001784A-page 1
SCH5027E
•
•
•
•
•
•
•
- SMBus Isolation Circuitry (2 sets external
and 1 set internal for Hardware Monitoring
Block)
- SMBus 2.0 compliant interface for Hardware
Monitoring
- LED Control (2)
Fan Control
- 5 PWM (Pulse width Modulation) Outputs
- Low frequency and high frequency PWM
support
- 6 Fan Tachometer Inputs
- Programmable automatic fan control based
on temperature
- Interrupt Pin for out-of-limit Fantach Events
- Fantach events generate PME’s
Temperature Monitor
- Monitoring of Two Remote Thermal Diodes
- Processor temperature monitoring by PECI
- Internal Ambient Temperature Measurement
- Limit Comparison of all Monitored Values
- Interrupt Pin for out-of-limit Temperature Indication
- Thermal events generate PME’s
- Configurable offset for internal or external
temperature channels.
Voltage Monitor
- Monitor Power supplies (2 at 1.125V, one at
5V, one each for Vccp, Vbat, VTR, and VCC)
- Limit Comparison of all Monitored Values
- Interrupt Pin for out-of-limit Voltage Indication
- Voltage events generate PME’s
Security Features
- Security Key Register (32 byte) for Device
Authentication
3 VID (Voltage Identification) Inputs
Phoenix Keyboard BIOS ROM
128-Pin QFP, RoHS Compliant Package
Description
The SCH5027E is a 3.3V (Super I/O Block is 5V tolerant) PC99/PC2001 compliant Super I/O controller with
an LPC interface. SCH5027E also includes Hardware
Monitoring capabilities, enhanced Security features,
Power Control logic and Motherboard Glue logic.
The SCH5027E's hardware monitoring capability
includes temperature, voltage and fan speed monitoring. It has the ability to alert the system to out-of-limit
conditions and automatically control the speeds of multiple fans. There are four analog inputs for monitoring
external voltages, two at 1.125V, one at 5V and one at
2.25V for Vccp (core processor voltage). There is also
internal monitoring of the SIO's VCC, VTR, and Vbat
power supplies. The SCH5027E is capable of monitoring two external diodes, one internal ambient temperature sensor or retrieving temperatures from external
processors that implement the PECI interface. The
DS00001784A-page 2
PECI implementation in the SCH5027E includes support for the PECI REQUEST# and PECI AVAILABLE
signals that are used to wake processors from the C3/
C4sleep states. There are three pulse width modulation
(PWM) outputs with high frequency support that may
be controlled by the auto fan block, as well as four fan
tachometer inputs. There are two additional software
controlled PWM inputs with associated tachometer
inputs that may be used to monitor fans. The
nHWM_INT pin is implemented to indicate out-of-limit
temperature, voltage, and FANTACH conditions. The
hardware monitoring block of the SCH5027E is accessible via the System Management Bus (SMBus). The
same interrupt event reported on the nHWM_INT pin
also creates PME wakeup events and speaker alarm
annunciation.
The SCH5027E also allows for a two or three piece linear fan function.
The Motherboard Glue logic includes various power
management and system logic including generation of
nRSMRST, SMBus buffers, and buffered PCI reset outputs.
The SCH5027E incorporates complete legacy Super I/
O functionality including an 8042 based keyboard and
mouse controller, an IEEE 1284, EPP, and ECP compatible parallel port, one serial port that is 16C550A
UART compatible, one IrDA 1.0 infrared ports, and a
floppy disk controller with Microchip's true CMOS 765B
core and enhanced digital data separator, The true
CMOS 765B core provides 100% compatibility with
IBM PC/XT and PC/AT architectures and is software
and register compatible with Microchip's proprietary
82077AA core. System related functionality, which
offers flexibility to the system designer, General Purpose I/O control functions, control of two LED's, and fan
control using fan tachometer inputs and pulse width
modulator (PWM) outputs.
The SCH5027E is ACPI 1.0/2.0 compatible and therefore supports multiple low power-down modes. It incorporates sophisticated power control circuitry (PCC),
which includes support for keyboard and mouse wakeup events.
The SCH5027E supports the ISA Plug-and-Play Standard register set (Version 1.0a). The I/O Address, DMA
Channel and hardware IRQ of each logical device in
the SCH5027E may be reprogrammed through the
internal configuration registers. There are up to 480
(960 - Parallel Port) I/O address location options, a
Serialized IRQ interface, and Three DMA channels.
 2014 Microchip Technology Inc.
SCH5027E
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 2014 Microchip Technology Inc.
DS00001784A-page 3
SCH5027E
BLOCK DIAGRAM
CLK32
CLOCKI
WDT*
WDT
CLOCK
GEN
SER_IRQ
PCI_CLK
SERIAL
IRQ
LAD[3:0]
LPC
Bus Interface
LFrame#
Internal Bus
(Data, Address, and Control lines)
PCI_RESET#
High-Speed
16550A
UART
PORT 2
S
M
B
u
s
SDA
SCLK
SDA1
SCLK1
SDA2
SCLK2
SMbus
Isolation
Switch
DS00001784A-page 4
PCI_RESET#
96 Mhz
PCI Reset
Outputs
14.318Mhz
HWN_INT
SLP_S5#
nRDATA, nWDATA
SLP_S3#
nDSKCHG, nDS0,
Vbat
nDIR, nSTEP
VTR
DRVDEN0*, nWRTPRT
Proprietary
82077
Compatible
Floppydisk
Controller with
Digital Data
Separator &
Write Precompensation
PD[7,0]
BUSY, SLCT, PE,
nERROR, nACK
nSTROBE, nINIT,
nSLCTIN, nALF
TXD1*, RXD1
nCTS1, nRTS1*
nDSR1, nDTR1
nDCD1, nRI1
TXD2 (IRTX)*,
RXD2 (IRRX)*
CTS2*, RTS2 *
DSR2*, DTR2*
DCD2*, RI2*
32 byte
Security
Key
Register
VCC
nWGATE, nHDSEL
General
Purpose
I/O
Keyboard/Mouse
8042
controller
Power Control
and Recovery
Hardware
Monitor
Intruder
Detection
nHWM_INT
VREF
PECI_REQUEST#*
PECI
READY
VID3/PWMA
VID4/PWMB
VID5 / FANTACH3
V1_IN
V2_IN
VCCP_IN
+2.5VTR_IN
Remote1Remote1+
Remote2Remote2+
PWM1/xTest Out
PWM2
PWM3/ ADDR_EN#
FANTACH1
FANTACH2
FANTACH4/ ADDR_SEL
PWMA*, PWMB*
FANTACHA*
FANTACHB*
nMTR0, nTRK0, InNDEX
Multi-Mode
Parallel Port
with
ChiProtectTM/
FDC MUX
(see LPC47B27x)
Power Mgmt
GP1[0:4]*, GP21*,GP22*
GP27*, GP32*,GP33*
GP36*, GP37* , GP4[0,2,3]*
GP5[0:1]*, GP6[0:1]*
LEDs
High-Speed
16550A
UART
PORT 1
LDRQ#
IO_PME_S3*
IO_PME_S5*
IO_SMI*
LED2*
SCH5027E BLOCK DIAGRAM
LED1*
FIGURE 1:
nIDE_RSTDRV*
nPCIRST_OUT[1:4]*
MCLK*, MDAT*
A20M*
nKBDRST*
KCLK*, KDAT*
nFPRST, PB_IN#
PWRGD_PS
SLP_S3#, SLP_S5#
`
PWRGD_CPU ,
PWRGD_3V
SLP_S3DEL#
PS_ON#
nRSMRST
nINTRD_IN
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.
 2014 Microchip Technology Inc.
SCH5027E
PACKAGE OUTLINE
Note:
For the most current package drawings, see the Microchip Packaging Specification at:
http://www.microchip.com/packaging.
128 Pin QFP Package Outline, 14X20X2.7 Body, 3.2 mm Footprint
Min
Nominal
Max
Remarks
A
~
~
3.4
Overall Package Height
A1
0.05
~
0.5
Standoff
A2
2.55
~
3.05
Body Thickness
D
23.00
23.20
23.40
X Span
D1
19.90
20.00
20.10
X body Size
E
17.00
17.20
17.40
Y Span
E1
13.90
14.00
14.10
Y body Size
H
0.09
~
0.20
Lead Frame Thickness
L
0.73
0.88
1.03
Lead Foot Length
L1
~
1.60
~
Lead Length
e
0.50 Basic
q
0o
W
0.10
Lead Pitch
~
7o
Lead Foot Angle
~
0.30
Lead Width
R1
0.08
~
~
Lead Shoulder Radius
R2
0.08
~
0.30
Lead Foot Radius
ccc
~
~
0.08
Coplanarity
Note 1:
2:
3:
4:
5:
6:
7:
Controlling Unit: millimeter.
Controlling Unit: millimeter.
Tolerance on the position of the leads is ± 0.04 mm maximum.
Package body dimensions D1 and E1 do not include the mold protrusion.
Maximum mold protrusion is 0.25 mm.
Dimension for foot length L measured at the gauge plane 0.25 mm above the seating plane.
Details of pin 1 identifier are optional but must be located within the zone indicated.
 2014 Microchip Technology Inc.
DS00001784A-page 5
SCH5027E
APPENDIX A:
TABLE A-1:
PRODUCT BRIEF REVISION HISTORY
REVISION HISTORY
Revision
DS00001784A (07-03-14)
DS00001784A-page 6
Section/Figure/Entry
Correction
Replaces previous SMSC version Rev. 0.2 (02-11-09)
 2014 Microchip Technology Inc.
SCH5027E
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Users of Microchip products can receive assistance through several channels:
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Technical Support
Customers should contact their distributor, representative or field application engineer (FAE) for support. Local sales
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Technical support is available through the web site at: http://www.microchip.com/support
 2014 Microchip Technology Inc.
DS00001784A-page 7
SCH5027E
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
PART NO.(1)
-
Device
Device:
Package:
Tape and Reel
Option:
XXX(2)
[X](3)
-
Package
Tape and Reel
Option
Example:
SCH5027E-NW = 128-pin QFP
SCH5027E (1)
NW
= 128-pin QFP (2)
Blank
TR
= Tray packaging
= Tape and Reel (3)
DS00001784A-page 8
Note 1:
These products meet the halogen maximum
concentration values per IEC61249-2-21.
Note 2:
All package options are RoHS compliant.
For RoHS compliance and environmental
information, please visit http://www.microchip.com/pagehandler/en-us/aboutus/
ehs.html .
Note 3:
Tape and Reel identifier only appears in the
catalog part number description. This identifier is used for ordering purposes and is not
printed on the device package. Check with
your Microchip Sales Office for package
availability with the Tape and Reel option.
 2014 Microchip Technology Inc.
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
•
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device applications and the like is provided only for your convenience and may be
superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO
REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE,
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harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or
otherwise, under any Microchip intellectual property rights.
Trademarks
The Microchip name and logo, the Microchip logo, dsPIC, FlashFlex, flexPWR, JukeBlox, KEELOQ, KEELOQ logo, Kleer, LANCheck,
MediaLB, MOST, MOST logo, MPLAB, OptoLyzer, PIC, PICSTART, PIC32 logo, RightTouch, SpyNIC, SST, SST Logo, SuperFlash and
UNI/O are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.
The Embedded Control Solutions Company and mTouch are registered trademarks of Microchip Technology Incorporated in the U.S.A.
Analog-for-the-Digital Age, BodyCom, chipKIT, chipKIT logo, CodeGuard, dsPICDEM, dsPICDEM.net, ECAN, In-Circuit Serial
Programming, ICSP, Inter-Chip Connectivity, KleerNet, KleerNet logo, MiWi, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK,
MultiTRAK, NetDetach, Omniscient Code Generation, PICDEM, PICDEM.net, PICkit, PICtail, RightTouch logo, REAL ICE, SQI, Serial
Quad I/O, Total Endurance, TSHARC, USBCheck, VariSense, ViewSpan, WiperLock, Wireless DNA, and ZENA are trademarks of
Microchip Technology Incorporated in the U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated in the U.S.A.
Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries.
GestIC is a registered trademarks of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in
other countries.
All other trademarks mentioned herein are property of their respective companies.
© 2014, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved.
ISBN: 9781632763228
QUALITY MANAGEMENT SYSTEM
CERTIFIED BY DNV
== ISO/TS 16949 ==
 2014 Microchip Technology Inc.
Microchip received ISO/TS-16949:2009 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
DS00001784A-page 9
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DS00001784A-page 10
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03/25/14
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