SMSC Switch LPC47S45x User Manual

LPC47S45x  
Advanced I/O with X-Bus Interface  
FEATURES  
ƒ 3.3 Volt Operation (5V tolerant)  
ƒ Floppy Disk Controller (Supports 2 FDCs)  
ƒ Multi-Mode Parallel Port  
ƒ 2.88MB Super I/O Floppy Disk Controller  
- Licensed CMOS 765B Floppy Disk Controller  
- Software and Register Compatible with SMSC's  
Proprietary 82077AA Compatible Core  
- 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  
ƒ Two UARTs  
ƒ 8042 Keyboard Controller  
ƒ SMBus Controller  
- SMBus access to LCD Interface  
- SMBus Serial Port 2 Interface Disable  
- SMBus access to Power On Elapsed Time  
Counters  
- Programmable Slave Address  
ƒ X-Bus Interface  
- DMA Enable Logic  
- Supports up to four external I/O components  
- Offers two modes of operation  
- Support for Driving LCD Panel Interface  
Controller  
- Data Rate and Drive Control Registers  
- 480 Address, up to 15 IRQ and Four DMA  
Options  
ƒ Enhanced Digital Data Separator  
- 2 Mbps, 1 Mbps, 500 Kbps, 300 Kbps, 250 Kbps  
Data Rates  
- Supports Port 80h “Snooping”  
ƒ Programmable Wakeup Event Interface (IO_PME#  
Pin)  
- Programmable Precompensation Modes  
ƒ SMI Support (IO_SMI# Pin)  
ƒ 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  
ƒ GPIOs (55)  
ƒ Fan Controller  
- One Fan Speed Control Output  
- One Fan Tachometer Input  
ƒ ISA IRQ to Serial IRQ Conversion  
ƒ XNOR Chain for Board Test Mode  
ƒ PC2001 and ACPI 2.0 Compliant  
ƒ 128-pin QFP Package  
- Supports Interrupt and Polling Access  
- 8-Bit Counter Timer  
- Port 92 Support  
ƒ ISA Plug-and-Play Compatible Register Set  
ƒ Intelligent Auto Power Management  
- Fast Gate A20 and KRESET Outputs  
ƒ Serial Ports  
ƒ Power On Elapsed Time Counters  
- Counter for Main Power  
- Counter for Standby Power  
- 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  
ƒ Real Time Clock  
- MC146818 and DS1287 Compatible  
- 256 Bytes of Battery Backed CMOS in Two 128-  
Byte Banks  
- 128 Bytes of CMOS RAM Lockable in 4x32 Byte  
Blocks  
- 480 Address and 15 IRQ Options  
- IrDA 1.0, HP-SIR, ASK IR Support  
- 12 and 24 Hour Time Format  
- 24-hour daily alarm  
- 30-day alarm  
- Binary and BCD Format  
- <1µA Standby Current (typ)  
SMSC LPC47S45x  
1
Rev. 04-30-07  
PRODUCT PREVIEW  
 
GENERAL DESCRIPTION  
The LPC47S45x is a 3.3V PC2001 compliant Super I/O controller designed for server applications. The LPC47S45x  
implements the LPC interface, a pin reduced ISA interface which provides the same or better performance as the  
ISA/X-bus with a substantial savings in pins used. The part provides 55 GPIO pins, ACPI support, an X-Bus  
interface, two SMBus controllers, a fan speed control output, a fan tachometer input and four ISA IRQs that can be  
routed to any of the serial IRQs. The LPC47S45x also provides Power on Elapsed Time counters for Main Power and  
Standby Power, power supply on/off control, and a Real Time Clock.  
The X-Bus interface allows the LPC47S45x to interface to as many as four external components that have an eight  
bit data bus and occupy up to 4 contiguous I/O address ports. It is accessible by either the SMBus or the LPC  
interface. It is capable of interfacing to an LCD Panel Interface Controller without any external logic and it can be  
used for Port 80h “snooping”.  
The LPC47S45x offers two SMBus controllers that share the same pin interface. The SMBus slave only device  
provides external access to an LCD controller that can be attached to the X-Bus. It is capable of disabling the floppy  
port, the serial ports, and the parallel port. The SMBus slave only device can also tristate the Serial Port 2 interface  
so that it may be muxed with an external UART controller. The LPC47S45x is equipped with two counters that may  
be monitored either by the SMBus slave only device or by the LPC interface, which monitor the length of time VCC  
and VTR are active.  
The LPC47S45x incorporates a keyboard interface, SMSC's true CMOS 765B floppy disk controller, advanced digital  
data separator, two 16C550 compatible UARTs, one Multi-Mode parallel port which includes ChiProtect circuitry plus  
EPP and ECP, and Intelligent Power Management. The true CMOS 765B core provides 100% compatibility with IBM  
PC/XT and PC/AT architectures in addition to providing data overflow and underflow protection. The SMSC  
advanced digital data separator incorporates SMSC's patented data separator technology, allowing for ease of  
testing and use. The on-chip UARTs are compatible with the NS16C550. The parallel port is compatible with IBM  
PC/AT architecture, as well as IEEE 1284 EPP and ECP. The LPC47S45x incorporates sophisticated power control  
circuitry (PCC). The PCC supports multiple low power down modes.  
The LPC47S45x supports the ISA Plug-and-Play Standard (Version 1.0a) and provides the recommended  
functionality to support Windows 2000, Windows Me, and PC2001. The I/O Address, DMA Channel and Hardware  
IRQ of each logical device in the LPC47S45x may be reprogrammed through the internal configuration registers.  
There are 480 I/O address location options, a Serialized IRQ interface, and three DMA channels.  
SMSC LPC47S45x  
3
Rev. 04-30-07  
PRODUCT PREVIEW  
 
PIN CONFIGURATION  
VTR  
Vbat  
XTAL1  
1
2
3
4
5
6
7
8
102  
101  
100  
99  
98  
97  
96  
95  
94  
93  
92  
91  
90  
89  
88  
87  
86  
85  
84  
83  
82  
81  
80  
79  
78  
77  
76  
75  
74  
73  
72  
71  
70  
69  
68  
67  
66  
65  
GP56/nCTS2  
GP55/nRTS2/SADR0  
GP54/nDSR2  
GP53/TXD2/IRTX  
GP52/RXD2/IRRX  
GP51/nDCD2  
VCC  
GP50/nRI2  
nDCD1  
nRI1  
nDTR1  
nCTS1  
nRTS1  
nDSR1  
TXD1  
RXD1  
nSTROBE  
nALF  
nERROR  
nACK  
BUSY  
PE  
SLCT  
VSS  
PD7  
PD6  
PD5  
PD4  
PD3  
PD2  
PD1  
PD0  
nSLCTIN  
nINIT  
VCC  
GP37/A20M  
GP36/nKBDRST  
GP35/IRQINB  
XTAL2/CLKI32  
AVSS  
GP40/DRVDEN0  
GP41/DRVDEN1  
MTR0#  
DSKCHG#  
DS0#  
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
DIR#  
STEP#  
WDATA#  
WGATE#  
HDSEL#  
INDEX#  
TRK0#  
LPC47S45x  
128 PIN QFP  
WRTPRT#  
RDATA#  
GP42/IO_PME#  
VCC  
CLOCKI  
LAD0  
LAD1  
LAD2  
LAD3  
LFRAME#  
LDRQ#  
PCI_RESET#  
LPCPD#  
GP43/DDRC  
PCI_CLK  
SER_IRQ  
VSS  
GP80  
GP81  
GP82  
GP83  
SMSC LPC47S45x  
4
Rev. 04-30-07  
PRODUCT PREVIEW  
 
128 PIN QFP PACKAGE OUTLINE, 3.9 MM FOOTPRINT.  
MIN  
~
NOMINAL  
MAX  
3.4  
0.5  
REMARKS  
Overall Package Height  
Standoff  
A
A1  
A2  
D
D1  
E
E1  
H
L
~
~
~
~
~
~
~
~
0.05  
2.55  
23.70  
19.90  
17.70  
13.90  
0.09  
0.73  
~
3.05  
24.10  
20.10  
18.10  
14.10  
0.20  
1.03  
~
Body Thickness  
X Span  
X body Size  
Y Span  
Y body Size  
Lead Frame Thickness  
Lead Foot Length  
Lead Length  
0.88  
1.95  
0.50 Basic  
L1  
e
Lead Pitch  
Lead Foot Angle  
Lead Width  
0o  
0.10  
0.13  
0.13  
~
~
~
~
~
~
7o  
0.30  
~
0.30  
0.08  
θ
W
R1  
R2  
ccc  
Lead Shoulder Radius  
Lead Foot Radius  
Coplanarity  
Notes:  
1 Controlling Unit: millimeter.  
2 Tolerance on the position of the leads is ± 0.04 mm maximum.  
3 Package body dimensions D1 and E1 do not include the mold protrusion.  
Maximum mold protrusion is 0.25 mm.  
4 Dimension for foot length L measured at the gauge plane 0.25 mm above the seating plane.  
5 Details of pin 1 identifier are optional but must be located within the zone indicated.  
SMSC LPC47S45x  
5
Rev. 04-30-07  
PRODUCT PREVIEW  
 

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