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Desktop System Controller Hub with Advanced, 8051µC-Based Auto Fan Control
Revision 0.6 (01-09-08) 4 SMSC SCH5617
PRODUCT PREVIEW
Block Diagram
Figure 1 SCH5617 Block Diagram
SCH5617
(128 QFP)
DIGITAL DATA
SEPARATOR
WITH WRITE
PRECOM-
PENSATION
SMC PROPRIETARY
82077 COMPATIBLE
VERTICAL
FLOPPYDISK
CONTROLLER CORE
WDATA
WCLOCK
RCLOCK
RDATA
Multi-Mode
Parallel Port
with ChiProtect
TM
LEDs
Internal Bus
(Data, Address, and Control lines)
High-Speed
16550A
UART
PORT 1
Keyboard/Mouse
8042
controller
High-Speed
16550A
UART
PORT 2
Power Mgmt
General
Purpose
I/O
Note 1: This diagram does not show power and ground
connections.
Note 2: Functions with "*" are located on multifunctional
pins. This diagram is designed to show the various
functions available on the chip (not pin layout).
CLOCK
GEN
LPC
Bus Interface
SERIAL
IRQ
Glue Logic
TACH1
TACH2
TACH3
HVSS
Remote1+
Remote1-
Remote2+
Remote2-
HVTR
PWM1
PWM2
PWM3
PROCHOT_IN#
PROCHOT_OUT
IDE_RSTDRV#*, PCI_RST_SYS#*
PCI_RST_SLOTS#*, PS_ON#*
PWR_GOOD_3V*, PWRGD_PS, RSMRST#*
SECONDARY_HD#*
PRIMARY_HD#*
SCSI#*
HD_LED#*
LED2*
LED3*
LED1*
LAD[3:0]
LFRAME#
LDRQ#
PCI_RESET#
LPCPD#
SER_IRQ
PCI_CLK
IO_PME#*
IO_SMI#*
PD[7:0]
BUSY,SLCT,PE
ERROR#, ACK#
STROBE#, INIT#
SLCTIN#
ALF#
TXD1*,RXD1*
CTS1#*, RTS1#*
DSR1#*, DTR1#*
DCD1#*, RI1#*
TXD2*,RXD2*
CTS2#*, RTS2#*
DSR2#*, DTR2#*
DCD2#*, RI2#*
KCLK, MCLK
KDAT, MDAT,
KBDRST#, A20M
P12*,P16*,P17*
RDATA#,
WDATA#
MRT0#, MRT1#*, TRK0#,
INDEX#,WRTPRT#,WGATE#,
HDSEL#,DRVDEN0*,
DIR#, STEP#, DSKCHG#,DS0#, DS1#*
8051
Analog
Interface
Analog
Block
Auto
Fan
Control
ROM
14.318 MHz
PECI
Interface
SMBus Isolation
Circuits
SCLK*, SDAT*
SCLK_1*, SDAT_1*
PECI V
REF
PECI IO
PECI READY
GP10*, GP11*, GP15*, GP21*,
GP22*, GP23*, GP25*, GP26*,
GP31*, GP33*, GP35*, GP36*,
GP37*, GP40*, GP41*, GP42*,
GP52*, GP53*, GP55*, GP57*,
GO60*, GP61*, GP75*, GP76*,
GP77*, GP80*, GP81*, GP82,
GP83*, GP84*, GP8051_[12:1]*,
GP8051_[17:14]*
Runtime
Registers