USB-Adapt™ SH3301 IC Converts PS/2 Data to USB HID & SYSTEM MANAGEMENT PRODUCTS, SYSTEM MANAGEMENT FAMILY The USB-Adapt™ SH3301 is a single IC that converts PS/2 keyboard and mouse data to USB 1.1. The USB-Adapt™ is ideal for system legacy support, enabling seamless connection of standard PS/2 devices (mice or keyboards) to USB. • 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 • 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 APPLICATIONS • System legacy support PIN ASSIGNMENTS 44 43 42 41 40 39 38 37 36 35 34 The IC offers two hot-pluggable and hot-swappable PS/2 ports; either port can accept a mouse or a keyboard. In addition, the USBAdapt™ auto-detects and transparently supports the wheel function of wheel mice. FEATURES N/C N/C N/C N/C N/C N/C N/C EPS2DAT1 D+ D3.3V DESCRIPTION PRELIMINARY 1 2 3 4 5 6 7 8 9 10 11 SH3301FB QFP 33 32 31 30 29 28 27 26 25 24 23 _RESET EPS2EN EPS2CLK1 N/C N/C N/C N/C N/C N/C N/C N/C 12 13 14 15 16 17 18 19 20 21 22 N/C N/C N/C N/C VDD VSS1 XOUT XIN VSS EPS2CLK0 EPS2DAT0 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 ©1999-2002 Semtech Corporation SH3301-DS-101 1 www.semtech.com N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C ORDERING CODE Package options 44-pin QFP Pitch 0.8 mm Other Materials USB-Adapt™ eval. kit Type Evaluation kit TA = -20°C to +85°C SH3301FB Order number EVK-SH3301 BLOCK DIAGRAM System USB I/O Keyboard/Mouse PS/2 Handler PS2 Port 1 Copyright ©1999-2002 Semtech Corporation SH3301-DS-101 2 PS2 Port 2 www.semtech.com USB FUNCTIONALITY PIN DEFINITIONS The USB-Adapt™ 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. Mnemonic QFP Type Name and Function Power Supply VDD VSS VSS1 5 9 6 PWR PWR PWR Positive supply voltage Ground: negative supply voltage Ground: negative supply voltage Reset _RESET 12 I Controller hardware reset pin: Active-low reset line Oscillator pins XIN 8 I XOUT 7 O Oscillator input: input signal from oscillator Oscillator output: output signal to oscillator USB 3.3V D+ D- 34 36 35 O I/O I/O USB reference voltage USB D+ line USB D- line PS/2 EPS2CLK0 EPS2DAT0 EPS2CLK1 EPS2DAT1 EPS2EN 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 The USB-Adapt™ 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. Not connected 1-4, 15-33, 38-44 Copyright ©1999-2002 Semtech Corporation SH3301-DS-101 3 Not used www.semtech.com Copyright ©1999-2002 Semtech Corporation SH3301-DS-101 4 www.semtech.com Shield 7 GND C7 47pF GND or DigiKey # PX600STR-ND 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 D+ D 3.3V Y1 Panasonic EFO-S6004E5 Y1 6.00MHz GND EPS2DAT1 EPS2CLK1 32 N/C 33 N/C 31 N/C GND C6 47pF PS21Data 37 14 SH3301FB U1 6 9 7 GND 1 PS21Clock GND 8 2 3 8 4 GND C5 47pF Xin 5 GND C4 47pF PS20Data EPS2CLK0 EPS2DAT0 EPS2EN VSS1 VSS Xout 6 External PS/2 10KΩ L2 12µH 10KΩ R7 7 Shield 1 3 10 11 13 N/C N/C N/C 2 JP1 MDIN6_SH 4 PS20Clock RESET 5 VDD 6 12 External PS/2 10KΩ GND 1 5 L1 12µH R5 10KΩ U2 3 R4 Microchip TC54VC4002ECB713 or TC54VC4302EMB713 RESET Vdd 38 39 40 R6 Q1 NDS356 C2 C3 0.1µF 10µF GND GND + 2 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 41 42 43 44 1 2 3 4 36 35 34 D- D+ 3.3V GND Vss Vbus D1out D1in D2out D2in C1 0.1µF 6 5 4 U2 SEMTECH STF202-30 1 2 3 J6 2 3 USB 5 JP2 MDIN6_SH Vdd 1 4 GND Vdd SUGGESTED INTERFACING FOR THE USB-ADAPT™ 6 5 8 MECHANICAL INFORMATION FOR THE SH3301FB PACKAGE 0~8° 13.20 ± 0.30 0.15 + 0.1 – 0.05 0.1 MAX 0.80 ± 0.20 10.00 ± 0.2 13.20 ± 0.30 10.00 ± 0.2 #44 #1 1.00 + 0.10 0.35 - 0.05 0.0 MIN 0.80 2.05 ± 0.1 2.30 MAX Copyright ©1999-2002 Semtech Corporation SH3301-DS-101 5 www.semtech.com 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 Value -0.3 to 6.5 -0.3 to VDD +0.3 20 Unit V V mA TA T low to T high -40 to +85 -65 to +150 2.0 °C °C KV TSTG VESD DC Electrical Characteristics (TA = -40°C to +85°C, 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=-200µa) 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 = -40°C to +85°C, VDD = 4.0 V to 5.25V) Characteristic Symbol Min Frequency of Operation Crystal Option fOSC External Clock Option fosc Copyright ©1999-2002 Semtech Corporation SH3301-DS-101 6 Typ Max 5.25 Unit V VDD 0.2 x VDD V V V 0.4 23 mA 3 20 µA µA -3 -20 µA µA 3 -3 µA µA 12 5 300 mA mA µA Max Unit 6.0 6.0 MHz MHz www.semtech.com This Page Left Intentionally Blank Copyright ©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 [email protected] http://www.semtech.com/ (805)498-2111 Telephone (805)498-3804 Fax Copyright ©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 ©1999-2002 Semtech Corporation SH3301-DS-101 8 www.semtech.com