LPC47N237-MT

Product Summary

The LPC47N237 is a 3.3V (5V Tolerant) PC99a/PC2001 compliant Docking I/O controller. The device,which implements the LPC interface, includes I/O functionality. LPC47N237’s LPC interface supports LPCI/O and DMA cycles. There is also a SMBus hosted GPIO Block.The LPC47N237 provides 4 LPC general purpose pins which offer flexibility to the system designer. Thelegacy I/O included in the LPC47N237 are: a 16C550A compatible UART; one Multi-Mode parallel portincluding ChiProtect circuitry plus EPP and ECP.architecture, as well as IEEE 1284 EPP and ECP. The LPC47N237 incorporates sophisticated powercontrol circuitry (PCC) which includes support for PME. The PCC supports multiple low power-downmodes. The LPC47N237 is ACPI 1.0b/2.0 compatible.The I/O Address, DMA Channel and hardware IRQ of each logical device in the LPC47N237 may bereprogrammed through the internal configuration registers. There are up to 480 (960 for Parallel Port) I/Oaddress location options, a Serialized IRQ interface, and three DMA channels.The SMBus hosted GPIO Block includes 32 GPIOs that are powered by standby supply. The GPIOs canbe used to assert an interrupt on a change in state of a GPIO. These events are indicated on thenSMBINT pin.IBM, PC/XT and PC/AT are registered trademarks and PS/2 is a trademark of International BusinessMachines Corporation.SMSC is a registered trademark and Ultra I/O, ChiProtect, and Multi-Mode are trademarks of StandardMicrosystems Corporation.

Parametrics

Specifications of LPC47N237-MT
Package Type	TQFP	Pin Count	100
Lead Free Status / RoHS Status	Compliant

Features

Product Features3.3 Volt Operation (5V Tolerant)32 SMBus-Hosted General Purpose Input/OutputPins? SMBus Slave Controller Enables Read/Write Accessto GPIO Ports? SMBus Runs on and GPIO Pins are Driven bySuspend Supply (VTR)? SMBus Interrupt Pin? SMBus Isolation CircuitryPC99a/PC2001 CompliantACPI 1.0/2.0 CompliantPower Management InterfaceLPC Interface? Multiplexed Command, Address and Data Bus? Serial IRQ Interface Compatible with Serialized IRQSupport for PCI Systems? nIO_PME pin for UART Ring Indicate? PCI Clock Run Support4 LPC-Hosted General Purpose Input/OutputPinsSMSC DB – LPC47N237LPC47N2373.3v I/O Controller forPort Replicators andDocking StationsSerial Port? Full Function Serial Port? High Speed 16C550A Compatible UART with16-Byte Send/Receive FIFOs? Programmable Baud Rate Generator supports 230kand 460k Baud? Modem Control Circuitry? 480 Address and 15 IRQ Options? Ring Indicator Wakeup EventMulti-Mode? Parallel Port with ChiProtect?? Standard Mode IBM PC/XT?, PC/AT?, and PS/2?Compatible Bidirectional Parallel Port? Enhanced Parallel Port (EPP) Compatible - EPP 1.7and EPP 1.9 (IEEE 1284 Compliant)? IEEE 1284 Compliant Enhanced Capabilities Port(ECP)? ChiProtect Circuitry for Protection? 480 Address, Up to 15 IRQ and Three DMA OptionsXNOR-Chain100 pin TQFP lead-free RoHS compliant package

Diagrams