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| USB-AdaptTM SH3301 IC Converts PS/2 Data to USB HID & SYSTEM MANAGEMENT PRODUCTS, SYSTEM MANAGEMENT FAMILY DESCRIPTION The USB-AdaptTM SH3301 is a single IC that converts PS/2 keyboard and mouse data to USB 1.1. The USB-AdaptTM is ideal for system legacy support, enabling seamless connection of standard PS/2 devices (mice or keyboards) to USB. The IC offers two hot-pluggable and hot-swappable PS/2 ports; either port can accept a mouse or a keyboard. In addition, the USBAdaptTM auto-detects and transparently supports the wheel function of wheel mice. FEATURES * Interfaces PS/2 devices to USB * Complies with USB 1.1 specification * Provides two PS/2 ports * PS/2 ports support mouse wheel functionality * Works with standard Windows keyboard and mouse drivers APPLICATIONS * System legacy support PIN ASSIGNMENTS N/C N/C N/C N/C N/C N/C N/C EPS2DAT1 D+ D3.3V PRELIMINARY * Devices are hot-pluggable * PS/2 ports are auto-selectable and hot-swappable - a mouse or keyboard can be used in either port * Easy to implement * Few external components required 44 43 42 41 40 39 38 37 36 35 34 N/C N/C N/C N/C VDD VSS1 XOUT XIN VSS EPS2CLK0 EPS2DAT0 33 32 31 30 29 28 27 26 25 24 23 1 2 3 4 5 6 7 8 9 10 11 SH3301FB QFP 12 13 14 15 16 17 18 19 20 21 22 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C Semtech is a registered trademark of Semtech Corporation. USB-Adapt is a trademark of Semtech Corporation. All other trademarks belong to their respective companies. Copyright (c)1999-2002 Semtech Corporation SH3301-DS-101 1 _RESET EPS2EN EPS2CLK1 N/C N/C N/C N/C N/C N/C N/C N/C www.semtech.com ORDERING CODE Package options 44-pin QFP Other Materials USB-AdaptTM eval. kit Pitch 0.8 mm Type Evaluation kit TA = -20C to +85C SH3301FB Order number EVK-SH3301 BLOCK DIAGRAM System USB I/O Keyboard/Mouse PS/2 Handler PS2 Port 1 PS2 Port 2 Copyright (c)1999-2002 Semtech Corporation SH3301-DS-101 2 www.semtech.com USB FUNCTIONALITY The USB-AdaptTM is a low-speed composite USB 1.1 device that interfaces PS/2. It supports the USB Human Interface Devices (HID) class specification. It uses two interrupt endpoints for the PS/2 devices. The USB-AdaptTM handles the merging of all this data, and sends the data to the host system. PS/2 PORTS The two PS/2 ports allow the user to connect legacy PS/2 devices to the USB host system. Standard 104-key keyboards and PS/2 mice, with support for MouseWheel functionality, can be hot-plugged at either of the PS/2 ports and immediately begin communicating with the host. PIN DEFINITIONS Mnemonic Power Supply VDD VSS VSS1 Reset _RESET QFP Type Name and Function 5 9 6 PWR PWR PWR Positive supply voltage Ground: negative supply voltage Ground: negative supply voltage 12 I Controller hardware reset pin: Active-low reset line Oscillator pins XIN XOUT 8 7 I O Oscillator input: input signal from oscillator Oscillator output: output signal to oscillator USB 3.3V D+ DPS/2 EPS2CLK0 EPS2DAT0 EPS2CLK1 EPS2DAT1 EPS2EN Not connected 34 36 35 O I/O I/O USB reference voltage USB D+ line USB D- line 10 11 14 37 13 I/O I/O I/O I/O O Clock line for external PS/2 port 0 Data line for external PS/2 port 0 Clock line for external PS/2 port 1 Data line for external PS/2 port 1 Enable external PS/2 ports 1-4, 15-33, 38-44 Not used Copyright (c)1999-2002 Semtech Corporation SH3301-DS-101 3 www.semtech.com Vdd Vdd 5 RESET 1 2 + Microchip TC54VC4002ECB713 or TC54VC4302EMB713 C2 C3 0.1F 10F GND GND U2 GND DD+ 3.3V Vdd U2 SEMTECH STF202-30 12 38 39 40 5 3 Copyright (c)1999-2002 Semtech Corporation SH3301-DS-101 Q1 NDS356 R4 10K USB 1 2 3 2 3 5 1 4 6 GND R5 10K SUGGESTED INTERFACING FOR THE USB-ADAPTTM 4 N/C N/C N/C VDD D+ D3.3V C1 0.1F GND 36 35 34 RESET 13 EPS2EN EPS2CLK0 EPS2DAT0 PS20Clock 10 11 5 3 1 PS20Data 6 5 4 Vss Vbus D1out D1in D2out D2in L1 12H External PS/2 J6 6 4 2 JP1 MDIN6_SH U1 C5 47pF GND Shield 7 C4 47pF GND GND 8 SH3301FB R6 37 14 EPS2DAT1 EPS2CLK1 10K R7 10K 32 N/C 33 N/C 31 N/C L2 12H 8 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 41 42 43 44 1 2 3 4 VSS1 VSS Xout Xin 6 9 7 External PS/2 Y1 6.00MHz GND C7 47pF GND 6 5 PS21Clock www.semtech.com GND 4 3 2 1 PS21Data JP2 MDIN6_SH GND Shield 7 8 C6 47pF Y1 Panasonic EFO-S6004E5 or DigiKey # PX600STR-ND GND MECHANICAL INFORMATION FOR THE SH3301FB PACKAGE 13.20 0.30 10.00 0.2 0~8 0.15 + 0.1 - 0.05 13.20 0.30 10.00 0.2 0.1 MAX #44 #1 1.00 + 0.10 0.35 - 0.05 0.80 0.0 MIN 2.05 0.1 2.30 MAX Copyright (c)1999-2002 Semtech Corporation SH3301-DS-101 5 www.semtech.com 0.80 0.20 ELECTRICAL SPECIFICATIONS Absolute Maximum Ratings Ratings Supply voltage Input and output voltage Current Drain per Pin (not including VSS or VDD) Operating Temperature SH3301 Storage Temperature Range ESD rating (human body model) Symbol VDD VIN, VOUT I TA TSTG VESD Value -0.3 to 6.5 -0.3 to VDD +0.3 20 T low to T high -40 to +85 -65 to +150 2.0 Unit V V mA C C KV DC Electrical Characteristics (TA = -40C to +85C, VDD = 4.0 V to 5.25V) Characteristic Symbol Min Typ 4.0 5.0 Supply voltage VDD Input high voltage high VIH 0.8 X VDD low VIL VSS Output voltage (except D-, D+) VOH VDD-1.0 high (IOH=-200a) VOL low (IOL=1ma) Output low current 8 15 IOL (VOL=3V, only pins38, 39, 67) Input leakage current high (all inputs except XIN, XOUT, RESET, D+, D-) ILIH1 high (XIN, XOUT, RESET) ILIH2 low (all inputs except XIN, XOUT, RESET, D+, D-) ILIL1 low (XIN, XOUT, RESET) ILIL2 Output leakage current (all I/O pins and output pins except D+, D-) high ILOH1 low ILOL Supply current 5.5 Normal operation mode IDD1 Idle mode IDD2 2.2 180 Stop mode IDD3 Control Timing (TA = -40C to +85C, VDD = 4.0 V to 5.25V) Characteristic Symbol Min Frequency of Operation Crystal Option fOSC External Clock Option fosc Max 5.25 VDD 0.2 x VDD Unit V V V V 0.4 23 mA 3 20 -3 -20 A A A A 3 -3 12 5 300 A A mA mA A Typ 6.0 6.0 Max Unit MHz MHz Copyright (c)1999-2002 Semtech Corporation SH3301-DS-101 6 www.semtech.com This Page Left Intentionally Blank Copyright (c)1999-2002 Semtech Corporation SH3301-DS-101 7 www.semtech.com For sales information and product literature, contact: Semtech Corporation Human Interface Device (HID) and System Management Division 200 Flynn Road Camarillo, CA 93012-8790 sales@semtech.com http://www.semtech.com/ (805)498-2111 Telephone (805)498-3804 Fax Copyright (c)1999-2002 Semtech Corporation. All rights reserved. USB-Adapt is a trademark of Semtech Corporation. Semtech is a registered trademark of Semtech Corporation. All other trademarks belong to their respective companies. INTELLECTUAL PROPERTY DISCLAIMER This specification is provided "as is" with no warranties whatsoever including any warranty of merchantability, fitness for any particular purpose, or any warranty otherwise arising out of any proposal, specification or sample. A license is hereby granted to reproduce and distribute this specification for internal use only . No other license, expressed or implied to any other intellectual property rights is granted or intended hereby. Authors of this specification disclaim any liability, including liability for infringement of proprietary rights, relating to the implementation of information in this specification. Authors of this specification also do not warrant or represent that such implementation(s) will not infringe such rights. Copyright (c)1999-2002 Semtech Corporation SH3301-DS-101 8 www.semtech.com |
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