WPCN385L

WPCN385L LPC-to-LPC Switch, Fast Infrared Port, Serial Port and GPIOs Product Brief December 2006 Revision 1.0 WPCN385L LPC-to-LPC Switch, Fast Infrared Port, Serial Port and GPIOs General Description The WPCN385L, a member of the Winbond LPC SuperI/O family, is targeted for a wide range of portable applications. The WPCN385L is PC2001 and ACPI compliant, and features an LPC-to-LPC Switch with hot plugability, a Fast Infrared port (FIR, IrDA 1.1 compliant), Serial Port and GeneralPurpose Input/Output (GPIO) support for a total of 18 ports. The WPCN385L enables glueless implementation of an LPC-to-LPC Switch between the motherboard LPC bus and the Docking Station, and supports hot insertion and hot removal. Outstanding Features ■ ■ Pin and software compatible with the Winbond 87382 LPC-to-LPC Switch with hot plugability, enables LPC devices in the Docking Station to be connected to the Main LPC Bus, thus reducing the number of signals required through the Docking Station connector Fast Infrared Port (FIR) Serial Port LPC bus interface, based on Intel’s LPC Interface Specification Revision 1.1, August 2002 (supports CLKRUN and LPCPD signals) PC2001 and ACPI Revision 3.0 compliant 18 GPIO ports, including 11 with IRQ assertion capability Two testability modes (XOR Tree and TRI-STATE® device pins). 5V tolerant and back-drive protected pins (except LPC bus pins) 48-pin LQFP package ■ ■ ■ ■ ■ ■ ■ ■ System Block Diagram I/O Ports South Bridge LPC Bus Portable Platform Docking Station WPCN385L EC (WPC876xL) Serial Interface FIR Interface DCLKOUT Docking LPC Bus TPM (WPCT200) SIO (WPCN8738xU, 8739x) © 2006 Winbond Electronics Corporation www.winbond.com WPCN385L Features ■ Docking LPC Switch — Hot plugability — LPCPD and CLKRUN support — The connection is controlled by software — Low switch resistance and propagation delay — Programmable Clock to Reset Delay Fast Infrared Port (FIR) — Software compatible with the 16550A and the 16450 — Shadow register support for write-only bit monitoring — FIR IrDA 1.1 compliant — HP-SIR — ASK-IR option of SHARP-IR — DASK-IR option of SHARP-IR — Consumer Remote Control supports RC-5, RC-6, NEC, RCA and RECS 80 — DMA support: one or two channels Serial Port (SP) — Software compatible with the 16550A and the 16450 — Shadow register support for write-only bit monitoring — UART data rates up to 1.5 Mbaud 18 General-Purpose I/O (GPIO) Ports — Supports IRQ assertion — Programmable drive type for each output pin (opendrain, push-pull or output disable) — Programmable option for internal pull-up resistor on each input pin — Output lock option — Input debounce mechanism ■ LPC System Interface — 8-bit I/O cycles — LPCPD and CLKRUN support — Implements PCI mobile design guide recommendation (PCI Mobile Design Guide 1.1, Dec. 18, 1998) PC2001 and ACPI 3.0 Compliant — PnP Configuration Register structure — Flexible resource allocation for all logical devices ❏ Relocatable base address ❏ ❏ ■ ■ 15 IRQ routing options Optional 8-bit DMA channels (where applicable) selected from four possible DMA channels ■ ■ Clock Sources — 14.318 MHz or 48 MHz clock input — LPC clock, 0 or 30 MHz to 33 MHz — 14.318 MHz or 48 MHz clock output to the docking station Strap Configuration — Base Address (BADDR) strap to determine the base address of the Index-Data register pair — Docking LPC disable (DLPC_DIS) strap to control the LPC-to-LPC Switch — Strap Inputs to select testability mode Power Supply — 3.3V supply operation — All pins are 5V tolerant, except LPC bus pins — All pins are back-drive protected, except LPC bus pins Testability — XOR Tree — TRI-STATE device pins ■ ■ ■ ■ Internal Block Diagram 14.31818 MHz LPC Interface Bus Interface Docking LPC Switch Clock Generator 48 MHz GPIO Ports Serial Port FIR Port Ports I/O Serial Interface FIR Interface Docking LPC Interface www.winbond.com 2 Revision 1.0 WPCN385L LPC-to-LPC Switch, Fast Infrared Port, Serial Port and GPIOs Physical Dimensions All dimensions are in millimeters 48-Pin Low-Profile Plastic Quad Flatpack (LQFP) Order Number WPCN385L_0DG (Replace “_” with chip revision: A, B, and so on) Important Notice Winbond products are not designed, intended, authorized or warranted for use as components in systems or equipment intended for surgical implantation, atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, or for other applications intended to support or sustain life. Furthermore, Winbond products are not intended for applications wherein failure of Winbond products could result or lead to a situation wherein personal injury, death or severe property or environmental damage could occur. Winbond customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Winbond for any damages resulting from such improper use or sales. Headquarters No. 4, Creation Rd. III, Science-Based Industrial Park, Hsinchu, Taiwan TEL: 886-3-5770066 FAX: 886-3-5665577 http://www.winbond.com.tw/ Taipei Office 9F, No.480, Rueiguang Rd., Neihu District, Taipei, 114, Taiwan, R.O.C. TEL: 886-2-8177-7168 FAX: 886-2-8751-3579 Winbond Electronics Corporation America 2727 North First Street, San Jose, CA 95134, U.S.A. TEL: 1-408-9436666 FAX: 1-408-5441798 Winbond Electronics (Shanghai) Ltd. 27F, 2299 Yan An W. Rd. Shanghai, 200336 China TEL: 86-21-62365999 FAX: 86-21-62365998 Winbond Electronics Corporation Japan 7F Daini-ueno BLDG, 3-7-18 Shinyokohama Kohoku-ku, Yokohama, 222-0033 TEL: 81-45-4781881 FAX: 81-45-4781800 Winbond Electronics (H.K.) Ltd. Unit 9-15, 22F, Millennium City, No. 378 Kwun Tong Rd., Kowloon, Hong Kong TEL: 852-27513100 FAX: 852-27552064 For Advanced PC Product Line information contact: APC.Support@winbond.com Please note that all data and specifications are subject to change without notice. All the trademarks of products and companies mentioned in this product brief belong to their respective owners. www.winbond.com