SCH5027
In Production
The SCH5027 is a 3.3V (Super I/O Block is 5V tolerant)
PC99/PC2001 compliant Super I/O controller with an LPC interface.
SCH5017 also includes Hardware Monitoring capabilities,
enhanced Security features, Power Control logic and Motherboard
Glue logic. The hardware monitoring capability includes
temperature, voltage, and fan monitoring. There are four analog
inputs for monitoring external voltages, and internal monitoring of
the SIO’s VCC (emulated power well), VTR (signal power well),
and VBAT power supplies. It can also monitor two external diodes,
one internal ambient temperature sensor or retrieving
temperatures from external processors that implement the PECI
(Platform Environment Control Interface). The SCH5017
incorporates complete legacy Super I/O functionality including a
floppy disk controller with SMSC's true CMOS (Complimentary
Metal-Oxide-Semiconductor) 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 SMSC's proprietary 82077AA
core. Additionally it supports multiple low power-down modes
and incorporates sophisticated power control circuitry and allows
for a two or three piece linear fan function.
Features
8042 Keyboard Controller
128 QFP Packaging
Legacy I/O
Parameter
Value
Name
Customer
N
Programmable
RAM
Intruder Detection
Y
Operating
0° C to +70°
32 byte Security Key Register
Temperature
C
State Machine Fan Control Engine
PCH Temp
N
25 GPIO
X1 CPU, x2 domain C3/C4
Monitoring
Tach
6
SMBus Interface (slave only)
Deep Sleep S5
N
Glue logic
Glue Logic
Y
8024 Keyboard
Y
IEEE 1284, EPP, and ECP Compatible Parallel Port
One 16C550A UART-compatible serial port
One IrDA 1.0 Infrared Port
Controller
PCI Resets
4
PECI Support
x1 CPU, x2
domain,
5 PWM Outputs
6 fan tachometer inputs
ACPI 1.0/2.0 Compatible
C3/C4
RRCC Auto Fan
N
Legacy I/O
Y
GPIO
25
PWM
5
Package
128 QFP
SMBus Interface
Y, (Slave
Only)
Security Key
32 byte
