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AU9228
USB KVM Controller
Technical Reference Manual
AU9228
USB KVM Controller
Copyright
Copyright (c) 1997 - 2007. Alcor Micro, Corp. All Rights Reserved. No part of this data sheet may be reproduced, transmitted, transcribed, stored in a retrieval system or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without prior written permission from Alcor Micro, Corp.
Trademark Acknowledgements
The company and product names mentioned in this document may be the trademarks or registered trademarks of their manufacturers.
Disclaimer
Alcor Micro, Corp. reserves the right to change this product without prior notice. Alcor Micro, Corp. makes no warranty for the use of its products and bears no responsibility for any error that appear in this document. Specifications are subject to change without prior notice.
Revision History
Date
July 2007 Oct 2007
Revision
1.00W 1.01W Official release
Description
Modify "3.0 Pin Assignment"
Contact Information:
Web site: http://www.alcormicro.com/
China ShenZhen Office Rm.2407-08, Industrial Bank Building No.4013, Shennan Road, ShenZhen,China. 518026 Phone: (0755) 8366-9039 Fax: (0755) 8366-9101 Los Angeles Office 9070 Rancho Park Court Rancho Cucamonga, CA 91730 USA Phone: (909) 483-8821 Fax: (909) 944-0464
Taiwan Alcor Micro, Corp. 4F, No 200 Kang Chien Rd., Nei Hu, Taipei, Taiwan, R.O.C. Phone: 886-2-8751-1984 Fax: 886-2-2659-7723 Santa Clara Office 2901 Tasman Drive, Suite 206 Santa Clara, CA 95054 USA Phone: (408) 845-9300 Fax: (408) 845-9086

Table of Contents
1. Introduction ............................................................ 1
1.1 Description...................................................................................1 1.2 Features........................................................................................1
2. Application Block Diagram ................................... 2 3. Pin Assignment ...................................................... 3 4. System Architecture and Reference Design ....... 8
4.1 AU9228 Block Diagram ...............................................................8
5. Hot Key Definition .................................................. 9
5.1 [Scroll]++[Scroll] mode ...............................................................9 5.2 [Caps]++[Caps] mode..................................................................9 5.3 [Num]++[Num] Mode ...................................................................10 5.4 [Ctrl]+[Shift] mode (left-hand side) ............................................10
6. Electrical Characteristics ...................................... 12
6.1 Recommended Operating Conditions .......................................12 6.2 General DC Characteristics ........................................................12 6.3 DC Electrical Characteristics of 3.3V I/O Cells..........................12 6.4 Crystal Oscillator Circuit Setup for Characterization ...............13 6.5 ESD Test Results.........................................................................13 6.6 Latch-Up Test Results.................................................................14
7. Mechanical Information ......................................... 16 7. Abbreviations ......................................................... 17
i
List of Figures
Figure 2.1 Block Diagram..................................................................2 Figure 3.1 Pin Assignment Diagram ................................................3 Figure 4.1 AU9228 Block Diagram ...................................................8 Figure 6.1 Crystal Oscillator Circuit Setup for Characterization ...13 Figure 6.2 Latch-Up Test Circuits ....................................................15 Figure 7.1 Mechanical Information Diagram ...................................16
List of Tables
Table 3.1 Pin Descriptions ................................................................4 Table 6.1 Recommended Operating Conditions .............................12 Table 6.2 General DC Characteristics ..............................................12 Table 6.3 DC Electrical Characteristics of 3.3V I/O Cells ...............12 Table 6.4 ESD Data ............................................................................13 Table 6.5 Latch-Up Data ...................................................................15
ii
1. Introduction
1.1 Description
AU9228 is a highly integrated single chip USB KVM controller offering users the possibility of sharing keyboard, mouse and monitor among up to four PCs. Not like traditional PS2 KVM devices, AU9228 uses USB as its upstream and downstream interface to support its driver-free and plug-n-play features, which allow users to easily install and use the KVM. Typical application of AU9228 is under an environment, in which only one set of monitor, keyboard and mouse is available. Applying such kind of devices in a computing environment will not only result in a centralized control, but also reduce the power and space consumption.
1.2 Features
Fully USB v1.1 specification compliant Support USB bus power and device self power Support up to 4 PCs via 4 USB upstream ports Support USB downstream port 1 for USB keyboard Support USB downstream port 2 for USB mouse Support PS2 keyboard Support both "panel button" and "hot key" to switch among PCs Support "auto-scan" mode for users to monitor PCs easily Support audio beep when system switches Support upstream port selected LED indicators for each PC respectively Support phantom keyboard to let user does not need to configure BIOS to turn on "No halt on error" Support 4 different sets of key sequence to switch among PCs (Please see the key definition in the following) Recalls "Caps Lock", "Num Lock" and "Scroll Lock" keys' status for each PC automatically Output the monitor selection signals to the external video-switching circuits Support 8-bit MCU interface to provide control from external MCU Support serial MCU interface to provide control from external MCU No need to install device driver under Windows, Macintosh, Linux, FreeBSD and Sun system
AU9228 USB KVM Controller V1.01W
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2. Application Block Diagram
Typical application is in a computing environment where it demands a centralized control and space & energy saving is critical.
Figure 2.1 Block Diagram
PC 1
PC 2
PC 3
PC 4
USB cable USB cable USB cable Monitor Cable Monitor cable USB cable Monitor cable
AU9228 KVM
Selection (6x)
Monitor and Audio swtiching box (Relay device )
Port 1
Port 2
Auto-swtich mode default button x 5
Keyboard
PS2 Keyboard
Audio Devices Monitor
Mouse
2
AU9228 USB KVM Controller V1.01W
3. Pin Assignment
The AU9228 is delivered in 64pin LQFP form factor. Documented below is a figure shows signal names of each pin and a table in the following page describes each pin in more details.
Figure 3.1 Pin Assignment Diagram
UPUSB4_DM UPUSB3_DM UPUSB2_DM UPUSB1_DM UPUSB4_DP UPUSB3_DP UPUSB2_DP UPUSB1_DP UP3LEDN UP2LEDN UP1LEDN
64 UP4LEDN AVCC AVSS XTAL1 XTAL2 VCC5V BVCC BVSS SWITCHN AUDIOSWITCHN BUS_PWRD BEEP INTN GND GND SYS1BUTTONN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
AU9228 USB KVM Controller V1.01W
BVSS ALE
D7
D6
D5
D4
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49 48 47 46 45 44 43 D3 MONITOREN1 MONITOREN0 RESERVED RESERVED GPO0 GPO1 GPO2 D2 D1 D0 PS2_DAT PS2_CLK RESERVED RESERVED SWITCHMODE2
AU9228
42 41 40 39 38 37 36 35 34 33
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
SYS2BUTTONN
SYS3BUTTONN
SYS4BUTTONN
DOWNUSB2_DP
DOWNUSB2_DM
DOWNUSB1_DP
DOWNUSB1_DM
VSS
VCC
SWITCHMODE0
SWITCHMODE1
EXTCPUMOD
CSN
RDN
WRN
3
Table 3.1 Pin Descriptions Pin #
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Pin Name
UP4LEDN AVCC AVSS XTAL1 XTAL2 VCC5V BVCC BVSS SWITCHN AUDIOSWITCHN BUS_PWRD BEEP INTN GND GND SYS1BUTTONN
I/O
O PWR PWR I O PWR PWR PWR I I I O O
Description
System 4 LED indicator (0:ON; 1:OFF) 3.3V analog input power Analog ground 12 MHz crystal input 12 MHz crystal output 5.0V input power from USB port 3.3V output power from internal regulator Ground pin of internal regulator Button with internal pull-up for switching to next system (0: Enable; 1: Normal) Audio ON/OFF switch with internal pull-up (1: OFF; 0: ON) Bus power selection (1: Device Self Power; 0: Bus Power) Audio output (4 KHz frequency) when system switches Interrupt signal output to external MCU when SWITCHMODE2='1' and EXTCPUMOD='1' (falling-edge triggered) Ground Ground
I
17
ALE
I
18 19 20 21
SYS2BUTTONN SYS3BUTTONN SYS4BUTTONN CSN
I I I I
22 23
RDN DOWNUSB2_DP
I I/O
Panel button with internal pull-up for enabling system 1 (0: Enable; 1: Normal) When not using external parallel MCU, it should be pulled down. Address latch enable when SWITCHMODE2='1' and EXTCPUMOD='1' (1: AD bus is address; 0: AD bus is data) Panel button with internal pull-up for enabling system 2 (0: Enable; 1: Normal) Panel button with internal pull-up for enabling system 3 (0: Enable; 1: Normal) Panel button with internal pull-up for enabling system 4 (0: Enable; 1: Normal) Chip enable for the MCU interface when SWITCHMODE2='1' and EXTCPUMOD='1' (0: Enable) Read strobe for the MCU interface when SWITCHMODE2='1' and EXTCPUMOD='1' (0: Enable) DownPort2 DP
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Pin #
24 25 26 27 28 29 30 31
Pin Name
DOWNUSB2_DM DOWNUSB1_DP DOWNUSB1_DM WRN EXTCPUMOD VSS VCC SWITCHMODE0
I/O
I/O I/O I/O I I PWR PWR I DownPort2 DM DownPort1 DP
Description
DownPort1 DM Read strobe for the MCU interface when SWITCHMODE2='1' and EXTCPUMOD ='1' (0: Enable; 1: Normal) External MCU mode selection (1: Parallel; 0: Serial). Serial is the default mode. Digital ground 3.3V digital input power Switch mode selection (SW0, SW1) for internal hotkey mode when SWITCHMODE2='0' and D2='0', it's defined as: (0, 0): [Scroll][Scroll] mode (default) (0, 1): [Caps Lock][Caps Lock] mode (1, 0): [Num Lock][Num Lock] mode (1, 1): [Ctrl][Shift] mode (left-hand side) Enable external MCU mode (1: Enable; 0: Disable). Disable is the default setting. Reserved Reserved
32 33 34 35 36 37
SWITCHMODE1 SWITCHMODE2 RESERVED RESERVED PS2_CLK PS2_DAT
I I
I/O I/O
PS2 clock signal (external pull-up required) PS2 data signal (external pull-up required) Bit 0 with internal pull-up in address/data bus of MCU interface when SWITCHMODE2='1' and EXTCPUMOD='1'. It also provides alternative functions: I2C bus SDA signal (slave mode) when SWITCHMODE2='1' and EXTCPUMOD='0' I2C bus SDA signal (master mode) when SWITCHMODE2='0' and D2='1' Bit 1 with internal pull-up in address/data bus of MCU interface when SWITCHMODE2='1' and EXTCPUMOD='1'. It also provides alternative functions: I2C bus SCL signal (slave mode) when SWITCHMODE2='1' and EXTCPUMOD='0' I2C bus SCL signal (master mode) when SWITCHMODE2='0' and D2='1' Bit 2 with internal pull-down in address/data bus of MCU interface when SWITCHMODE2='1' and EXTCPUMOD='1'. It also provides alternative functions: I2C bus address 0 (slave mode) when SWITCHMODE2='1' and EXTCPUMOD='0' I2C bus master mode enable bit when SWITCHMODE2='0'
5
38
D0
I/O
39
D1
I/O
40
D2
I/O
AU9228 USB KVM Controller V1.01W
Pin #
41 42 43 44 45 46 47
Pin Name
GPO2 GPO1 GPO0 RESERVED RESERVED MONITOREN0 MONITOREN1
I/O
O O O
Description
General purpose output pin 2 General purpose output pin 1 General purpose output pin 0 Reserved Reserved Monitor selection (MON0, MON1): (0, 0) : monitor 1 select (1, 0) : monitor 2 select (0, 1) : monitor 3 select (1, 1) : monitor 4 select Bit 3 with internal pull-down in address/data bus of MCU interface when SWITCHMODE2='1' and EXTCPUMOD='1'. It also provides alternative function: I2C bus address 1 (slave mode) when SWITCHMODE2='1' and EXTCPUMOD='0' Bit 4 with internal pull-down in address/data bus of MCU interface when SWITCHMODE2='1' and EXTCPUMOD='1'. It also provides alternative function: I2C bus address 2 (slave mode) when SWITCHMODE2='1' and EXTCPUMOD='0' Bit 5 with internal pull-down in address/data bus of MCU interface when SWITCHMODE2='1' and EXTCPUMOD='1' Bit 6 with internal pull-down in address/data bus of MCU interface when SWITCHMODE2='1' and EXTCPUMOD='1' Bit 5 with internal pull-down in address/data bus of MCU interface when SWITCHMODE2='1' and EXTCPUMOD='1' Upstream port 1 DP Upstream port 1 DM Upstream port 2 DP Upstream port 2 DM Upstream port 3 DP Upstream port 3 DM Upstream port 4 DP Upstream port 4 DM System 1 LED indicator (0:ON; 1:OFF) System 2 LED indicator (0:ON; 1:OFF)
AU9228 USB KVM Controller V1.01W
O O
48
D3
I/O
49
D4
I/O
50
D5
I/O
51
D6
I/O
52 53 54 55 56 57 58 59 60 61 62
6
D7 UPUSB1_DP UPUSB1_DM UPUSB2_DP UPUSB2_DM UPUSB3_DP UPUSB3_DM UPUSB4_DP UPUSB4_DM UP1LEDN UP2LEDN
I/O I/O I/O I/O I/O I/O I/O I/O I/O O O
Pin #
63 64
Pin Name
UP3LEDN BVSS
I/O
O PWR
Description
System 3 LED indicator (0:ON; 1:OFF) Ground pin of internal regulator
AU9228 USB KVM Controller V1.01W
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4. System Architecture and Reference Design
4.1 AU9228 Block Diagram
Figure 4.1 AU9228 Block Diagram
Host 1 Host 2 Host 3 Host 4
USB Protocol Engine
USB Protocol Engine
USB Protocol Engine
USB Protocol Engine
Downstream Port
Downstream Port
Downstream Port
Downstream Port
Downstream Port Data Checker
Downstream Port Data Multiplexor
Switch Detection
port 1: USB Keyboard; port 2: USB Mouse; PS2 port: PS2 Keyboard
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AU9228 USB KVM Controller V1.01W
5. Hot Key Definition
AU9228 supports 4 sets of "Hot Key" to help users to switch PC, rapidly and easily, via hot key sequence defined using keypads on the left hand side of a keyboard.
5.1 [Scroll]++[Scroll] mode
Hot Key Definition
[Scroll] ++ [Scroll] + 1 (note1) [Scroll] ++ [Scroll] + 2 [Scroll] ++ [Scroll] + 3 [Scroll] ++ [Scroll] + 4 [Scroll] ++ [Scroll] + or [Scroll] ++ [Scroll] + or [Scroll] ++ [Scroll] + B [Scroll] ++ [Scroll] + S [Scroll] ++ [Scroll] + S + n [Scroll]++[Scroll]+F1~F8 [Scroll]++[Scroll]+[Caps] [Scroll]++[Scroll]+[Num] [Scroll]++[Scroll]+[Ctrl] Switch to PC1 Switch to PC2 Switch to PC3 Switch to PC4 Switch to Next PC Switch to Previous PC Beeper ON/OFF (note2) Auto-scan mode every 10 second. ([ESC] switch to regular key code) Set Auto-scan rate (note3). ([ESC) switch to regular key code) Customer define key (note4). Switch to [Caps]++[Caps] hot key mode Switch to [Num]++[Num] hot key mode Switch to [Ctrl]+[Shift] hot key mode
5.2 [Caps]++[Caps] mode
Hot Key Definition
[Caps]++[Caps]+1 [Caps]++[Caps]+2 [Caps] ++ [Caps] + 3 [Caps] ++ [Caps] + 4 [Caps]++[Caps]+ or [Caps]++[Caps]+ or [Caps]++[Caps]+B [Caps]++[Caps]+S [Caps]++[Caps]+S + n [Caps]++[Caps]+F1~F8 [Caps]++[Caps]+[Scroll] [Caps]++[Caps]+[Num] [Caps]++[Caps]+[Ctrl] Switch to PC1 Switch to PC2 Switch to PC3 Switch to PC4 Switch to Next PC Switch to Previous PC Beeper ON/OFF (note2) Auto-scan mode every 10 second. ([ESC] switch to regular key code) Set Auto-scan rate (note3). ([ESC] switch to regular key code) Customer define key (note4) Switch to [Scroll]++[Scroll] hot key mode Switch to [Num]++[Num] hot key mode Switch to [Ctrl]+[Shift] hot key mode
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5.3 [Num]++[Num] Mode
Hot Key Definition
[Num]++[Num]+1 [Num]++[Num]+2 [Num] ++ [Num] + 3 [Num] ++ [Num] + 4 [Num]++[Num]+ or [Num]++[Num]+ or [Num]++[Num]+B [Num]++[Num]+S [Num]++[Num]+S + n [Num]++[Num]+F1~F8 [Num]++[Num]+[Scroll] [Num]++[Num]+[Caps] [Num]++[Num]+[Ctrl] Switch to PC1 Switch to PC2 Switch to PC3 Switch to PC4 Switch to Next PC Switch to Previous PC Beeper ON/OFF (note2) Auto-scan mode every 10 second. ([ESC] switch to regular key code) Set Auto-scan rate (note3). ([ESC] switch to regular key code) Customer define key (note4) Switch to [Scroll]++[Scroll] hot key mode Switch to [Caps]++[Caps] hot key mode Switch to [Ctrl]+[Shift] hot key mode
5.4 [Ctrl]+[Shift] mode (left-hand side)
Hot Key Definition
[Ctrl]++[Ctrl] [Ctrl + Shift + 1] [Ctrl + Shift + 2] [Ctrl + Shift + 3] [Ctrl + Shift + 4] [Ctrl + Shift + or ] [Ctrl + Shift + or ] [Ctrl + Shift + B] [Ctrl + Shift + S] [Ctrl + Shift + S + n] [Ctrl + Shift + F1~F8] [Ctrl + Shift + Scroll] [Ctrl + Shift + Caps] [Ctrl + Shift + Num] Switch to next live PC Switch to PC1 Switch to PC2 Switch to PC3 Switch to PC4 Switch to Next PC Switch to Previous PC Beeper ON/OFF (note2) Auto-scan mode every 10 second. ([ESC] switch to regular key code) Set Auto-scan rate (note3). ([ESC] switch to regular key code) Customer define key (note4) Switch to [Scroll]++[Scroll] hot key mode Switch to [Caps]++[Caps] hot key mode Switch to [Num]++[Num] hot key mode
Note 1: "++" means press key rapidly, "[Scroll]++[Scroll]+1" means press "Scroll" twice rapidly and then press "1". If system receives "Scroll ++ Scroll" command only, system will reset the buffer when it does not receive any input comes after within a defined interval of time (say, 5 seconds).
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AU9228 USB KVM Controller V1.01W
Note 2: Audible feedback when beeper is ON and keep the device in silent mode when beeper is OFF. Note 3: n = number from 1 to 9, each represents 5 seconds' interval latency to 60 seconds correspondingly. Auto-scan rate set Nnumber 1 2 3 4 5 6 7 8 9 Note 4: Function key +F1 Function key +F2 Function key +F3 Function key +F4 Function key +F5 Function key +F6 Function key +F7 Function key +F8 GPO 2 0 0 0 0 1 1 1 1 GPO 1 0 0 1 1 0 0 1 1 GPO 0 0 1 0 1 0 1 0 1 Second 5 10 15 20 25 30 35 40 60
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6. Electrical Characteristics
6.1 Recommended Operating Conditions
Table 6.1 Recommended Operating Conditions SYMBOL
VCC VIN TORP TSTG
PARAMETER
Power Supply Input Voltage Operating Temperature Storage Temperature
MIN
4.75 0 0 -40
TYP
5
MAX
5.25 VCC 85 125
UNITS
V V OC OC
6.2 General DC Characteristics
Table 6.2 General DC Characteristics SYMBOL
IIL IIH OZ CIN COUT CBID
PARAMETER
Input low current Input high current Tri-state leakage current Input capacitance Output capacitance Bi-directional buffer capacitance
CONDITIONS
no pull-up or pull-down no pull-up or pull-down
MIN
-1 -1 -10
TYP
MAX
1 1 10
UNITS
A A A F F F
5 5 5
6.3 DC Electrical Characteristics of 3.3V I/O Cells
Table 6.3 DC Electrical Characteristics of 3.3V I/O Cells Limits SYMBOL PARAMETER CONDITIONS UNIT MIN TYP MAX
VIL VIH VOL VOH RI Input Low Voltage Input Hight Voltage Output low voltage Output high voltage Input Pull-up/down resistance CMOS CMOS IOL=4mA, 16mA IOH=4mA,16mA Vil=0V or Vih=VCC 2.4 10k/20 0k 2.3 0.4 0.9 V V V V K
12
AU9228 USB KVM Controller V1.01W
6.4 Crystal Oscillator Circuit Setup for Characterization
The following setup was used to measure the open loop voltage gain for crystal oscillator circuits. The feedback resistor serves to bias the circuit at its quiescent operating point and the AC coupling capacitor, Cs, is much larger than C1 and C2.
Figure 6.1 Crystal Oscillator Circuit Setup for Characterization
6.5 ESD Test Results
Test Description: ESD Testing was performed on a Zapmaster system using the Human-Body -Model (HBM) and Machine-Model (MM), according to MIL_STD 883 and EIAJ IC_121 respectively. Human-Body-Model stress devices by sudden application of a high voltage supplied by a 100 PF capacitor through 1.5 Kohm resistance. Machine-Model stresses devices by sudden application of a high voltage supplied by a 200 PF capacitor through very low (0 ohm) resistance Test circuit & condition Zap Interval : 1 second Number of Zaps : 3 positive and 3 negative at room temperature Critera : I-V Curve Tracing
Table 6.4 ESD Data Model
HBM MM
Model
Vdd, Vss, I/C Vdd, Vss, I/C
S/S
15 15
TARGET
2000V 200V
Results
TBD TBD
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6.6 Latch-Up Test Results
Test Description: Latch-Up testing was performed at room ambient using an IMCS-4600 system which applies a stepped voltage to one pin per device with all other pins open except Vdd and Vss which were biased to 5 Volts and ground respectively. Testing was started at 5.0 V (Positive) or 0 V(Negative), and the DUT was biased for 0.5 seconds. If neither the PUT current supply nor the device current supply reached the predefined limit (DUT=0 mA , Icc=100 mA), then the voltage was increased by 0.1 Volts and the pin was tested again. This procedure was recommended by the JEDEC JC-40.2 CMOS Logic standardization committee.
Notes: 1. DUT: Device Under Test. 2. PUT: Pin Under Test.
Icc Measurement
m
1 Source
V Supply
+
Untested Input Tied to V supply Trigger Source
Vcc Pin Pin under under test test
DUT
GND
Untested Output Open Circuit
+
Test Circuit : Positive Input/ output Overvoltage /Overcurrent
14
AU9228 USB KVM Controller V1.01W
Icc M easurem ent
mA
1 Source
V Supply
Vcc Pin under test
+
Untested Input Tied to V supply
Trigger Source
DUT
GND
Untested Output O pen Circuit
+
Test Circuit: Negative Input/Output Overvoltage/Overcurrent
Icc Measurement mA V Supply Untested Output Open Circuit
Vcc All Input Tied to V supply
+
DUT
GND
Supply voltage Test
Figure 6.2 Latch-Up Test Circuits
Model
Model
Voltage (v)/ Current (mA)
11.0 11.0 200 200 9.0
S/S
5 5 5
Results
TBD TBD TBD
+ Voltage + Current Vdd-Vxx
Table 6.5 Latch-Up Data
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7. Mechanical Information
Figure 7.1 Mechanical Information Diagram
E
E1
GAUGE PLANE SEATING PLANE
A1
D
D1
L
0.25
L1
C1
A2
A
b
e
SYMBOLS A A1 A2 b c1 D D1 E E1 e L L1
MIN. MAX. -1.60 0.05 0.15 1.35 1.45 0.17 0.27 0.09 0.16 12.00 BSC 10.00 BSC 12.00 BSC 10.00 BSC 0.50 BSC 0.45 0.75 1.00 REF
1. JEDEC OUTLINE: MS-026 BCD 2. DIMENSIONS D1 AND E1 DO NOT INCLUDE MOLD PROTRUSION. ALLOWABLE PROTRUSION IS 0.25mm PER SIDE. D1 AND E1 ARE MAXIMUM PLASTIC BODY SIZE DIMENSIONS INCLUDING MOLD MISMATCH. 3. DIMENSION b DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHEALL NOT CAUSE THE LEAD WIDTH TO EXCEED THE MAXIMUM b DIMENSION BY MORE THAN 0.08mm.
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AU9228 USB KVM Controller V1.01W
7. Abbreviations
In this chapter some of the terms and abbreviations used throughout the technical reference manual are listed as follows. SIE UTMI Serial Interface Engine USB Transceiver Macrocell Interface
About Alcor Micro, Corp.
Alcor Micro, Corp. designs, develops and markets highly integrated and advanced peripheral semiconductor, and software driver solutions for the personal computer and consumer electronics markets worldwide. We specialize in USB solutions and focus on emerging technology such as USB and IEEE 1394. The company offers a range of semiconductors including controllers for USB hub, integrated keyboard/USB hub and USB Flash memory card reader...etc. Alcor Micro, Corp. is based in Taipei, Taiwan, with sales offices in Taipei, Japan, Korea and California. Alcor Micro is distinguished by its ability to provide innovative solutions for spec-driven products. Innovations like single chip solutions for traditional multiple chip products and on-board voltage regulators enable the company to provide cost-efficiency solutions for the computer peripheral device OEM customers worldwide.
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