AU9226
USB KVM Controller
Technical Reference Manual
AU9226
USB KVM Controller
Copyright
Copyright © 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
Revision
Description
July 2007
1.00W
Official release
Oct 2007
1.01W
Modify “3.0 Pin Assignment”
Contact Information:
Web site: http://www.alcormicro.com/
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
China ShenZhen Office
Rm.2407-08, Industrial Bank Building
No.4013, Shennan Road,
ShenZhen,China. 518026
Phone: (0755) 8366-9039
Fax: (0755) 8366-9101
Santa Clara Office
2901 Tasman Drive, Suite 206
Santa Clara, CA 95054
USA
Phone: (408) 845-9300
Fax: (408) 845-9086
Los Angeles Office
9070 Rancho Park Court
Rancho Cucamonga, CA 91730
USA
Phone: (909) 483-8821
Fax: (909) 944-0464
<Memo>
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 ....... 7
4.1 AU9226 Block Diagram ...............................................................7
5. Hot Key Definition .................................................. 8
5.1 [Scroll]++[Scroll] mode ...............................................................8
5.2 [Caps]++[Caps] mode..................................................................8
5.3 [Num]++[Num] Mode ...................................................................9
5.4 [Ctrl]+[Shift] mode (left-hand side) ............................................9
6. Electrical Characteristics ...................................... 11
6.1 Recommended Operating Conditions .......................................11
6.2 General DC Characteristics ........................................................11
6.3 DC Electrical Characteristics of 3.3V I/O Cells..........................11
6.4 Crystal Oscillator Circuit Setup for Characterization ...............12
6.5 ESD Test Results.........................................................................12
6.6 Latch-Up Test Results.................................................................13
7. Mechanical Information ......................................... 15
7. Abbreviations ......................................................... 16
i
List of Figures
Figure 2.1 Block Diagram..................................................................2
Figure 3.1 Pin Assignment Diagram ................................................3
Figure 4.1 AU9226 Block Diagram ...................................................7
Figure 6.1 Crystal Oscillator Circuit Setup for Characterization ...12
Figure 6.2 Latch-Up Test Circuits ....................................................14
Figure 7.1 Mechanical Information Diagram ...................................15
List of Tables
Table 3.1 Pin Descriptions ................................................................4
Table 6.1 Recommended Operating Conditions .............................11
Table 6.2 General DC Characteristics ..............................................11
Table 6.3 DC Electrical Characteristics of 3.3V I/O Cells ...............11
Table 6.4 ESD Data ............................................................................12
Table 6.5 Latch–Up Data ...................................................................14
ii
1. Introduction
1.1 Description
AU9226 is a highly integrated single chip USB KVM controller offering users the
possibility of sharing keyboard, mouse and monitor among up to two PCs. Not like
traditional PS2 KVM devices, AU9226 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 AU9226 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 2 PCs via 2 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 2 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
Support EEPRom to memorize hotkey mode
AU9226 USB KVM Controller V1.01W
1
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
USB cable
PC 2
USB cable
Monitor Cable
Monitor cable
Selection (3x)
Monitor and Audio
swtiching box
(Relay device )
Port 2
Port 1
AU9226 KVM
Auto-swtich mode
default button x 1
Keyboard
PS2 Keyboard
Mouse
2
Audio Devices
Monitor
AU9226 USB KVM Controller V1.01W
3. Pin Assignment
The AU9226 is delivered in 48pin 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
UPUSB1_DP
D7
D6
D5
D4
D3
MONITOREN0
UPUSB2_DM
46
UPUSB2_DP
UP1LEDN
47
UPUSB1_DM
UP2LEDN
48
45
44
43
42
41
40
39
38
37
AVCC
1
36
GPO0
AVSS
2
35
GPO1
XTAL1
3
34
GPO2
XTAL2
4
33
D2
VCC5V
5
32
D1
BVCC
6
31
D0
BVSS
7
30
PS2_DAT
SWITCHN
8
29
PS2_CLK
AUDIOSWITCHN
9
28
SWITCHMODE2
BUS_PWRD
10
27
SWITCHMODE1
BEEP
11
26
SWITCHMODE0
INTN
12
25
VCC
AU9226
13
14
15
16
17
18
19
20
21
22
23
24
GND
GND
ALE
CSN
RDN
DOWNUSB2_DP
DOWNUSB2_DM
DOWNUSB1_DP
DOWNUSB1_DM
WRN
EXTCPUMOD
VSS
AU9226 USB KVM Controller V1.01W
3
Table 3.1 Pin Descriptions
Pin #
Pin Name
I/O
Description
1
AVCC
PWR
3.3V analog input power
2
AVSS
PWR
Analog ground
3
XTAL1
I
12 MHz crystal input
4
XTAL2
O
12 MHz crystal output
5
VCC5V
PWR
5.0V input power from USB port
6
BVCC
PWR
3.3V output power from internal regulator
7
BVSS
PWR
Ground pin of internal regulator
8
SWITCHN
I
9
AUDIOSWITCHN
I
10
BUS_PWRD
I
11
BEEP
O
12
INTN
O
13
GND
Ground
14
GND
Ground
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)
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)
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)
15
ALE
I
16
CSN
I
17
RDN
I
18
DOWNUSB2_DP
I/O
DownPort2 DP
19
DOWNUSB2_DM
I/O
DownPort2 DM
20
DOWNUSB1_DP
I/O
DownPort1 DP
21
DOWNUSB1_DM
I/O
DownPort1 DM
22
WRN
I
23
EXTCPUMOD
I
24
VSS
PWR
4
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
AU9226 USB KVM Controller V1.01W
Pin #
Pin Name
I/O
Description
25
VCC
PWR
26
SWITCHMODE0
I
27
SWITCHMODE1
I
28
SWITCHMODE2
I
29
PS2_CLK
I/O
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.
PS2 clock signal (external pull-up required)
30
PS2_DAT
I/O
31
D0
I/O
32
D1
I/O
33
D2
I/O
34
GPO2
O
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'
General purpose output pin 2
35
GPO1
O
General purpose output pin 1
36
GPO0
O
General purpose output pin 0
37
MONITOREN0
O
38
D3
I/O
39
D4
I/O
AU9226 USB KVM Controller V1.01W
Monitor Select : ('0' : Monitor1 Select ; ‘1’ :
Monitor2 Select)
Data3 or Address3 when SWITCHMODE2='1' and
EXTCPUMOD='1'; I2C slave address1 when
SWITCHMODE2='1' and EXTCPUMOD='0';
Data4 or Address4 when SWITCHMODE2='1' and
EXTCPUMOD='1'; I2C slave address2 when
SWITCHMODE2='1' and EXTCPUMOD='0';
5
Pin #
Pin Name
I/O
40
D5
I/O
41
D6
I/O
42
D7
I/O
43
UPUSB1_DP
I/O
Upstream Port 1 DP
44
UPUSB1_DM
I/O
Upstream Port 1 DM
45
UPUSB2_DP
I/O
Upstream Port 2 DP
46
UPUSB2_DM
I/O
Upstream Port 2 DM
47
UP1LEDN
O
System 1 LED Indicator
48
UP2LEDN
O
System 2 LED Indicator
6
Description
Data5 or Address5 when SWITCHMODE2='1' and
EXTCPUMOD='1'
Data6 or Address6 when SWITCHMODE2='1' and
EXTCPUMOD='1'
Data7 or Address7 when SWITCHMODE2='1' and
EXTCPUMOD='1'
AU9226 USB KVM Controller V1.01W
4. System Architecture and Reference
Design
4.1 AU9226 Block Diagram
Figure 4.1 AU9226 Block Diagram
Host 1
Host 2
USB Protocol
Engine
USB Protocol
Engine
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
AU9226 USB KVM Controller V1.01W
7
5. Hot Key Definition
AU9226 supports 2 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)
Switch to PC1
[Scroll] ++ [Scroll] + 2
Switch to PC2
[Scroll] ++ [Scroll] + → or ↓
Switch to Next PC
[Scroll] ++ [Scroll] + ← or ↑
Switch to Previous PC
[Scroll] ++ [Scroll] + B
[Scroll]++[Scroll]+F1~F8
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).
[Scroll]++[Scroll]+[Caps]
Switch to [Caps]++[Caps] hot key mode
[Scroll]++[Scroll]+[Num]
Switch to [Num]++[Num] hot key mode
[Scroll]++[Scroll]+[Ctrl]
Switch to [Ctrl]+[Shift] hot key mode
[Scroll] ++ [Scroll] + S
[Scroll] ++ [Scroll] + S + n
5.2 [Caps]++[Caps] mode
Hot Key Definition
[Caps]++[Caps]+1
Switch to PC1
[Caps]++[Caps]+2
Switch to PC2
[Caps]++[Caps]+→ or ↓
Switch to Next PC
[Caps]++[Caps]+← or ↑
Switch to Previous PC
[Caps]++[Caps]+B
[Caps]++[Caps]+F1~F8
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)
[Caps]++[Caps]+[Scroll]
Switch to [Scroll]++[Scroll] hot key mode
[Caps]++[Caps]+[Num]
Switch to [Num]++[Num] hot key mode
[Caps]++[Caps]+[Ctrl]
Switch to [Ctrl]+[Shift] hot key mode
[Caps]++[Caps]+S
[Caps]++[Caps]+S + n
8
AU9226 USB KVM Controller V1.01W
5.3 [Num]++[Num] Mode
Hot Key Definition
[Num]++[Num]+1
Switch to PC1
[Num]++[Num]+2
Switch to PC2
[Num]++[Num]+→ or ↓
Switch to Next PC
[Num]++[Num]+← or ↑
Switch to Previous PC
[Num]++[Num]+B
[Num]++[Num]+F1~F8
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)
[Num]++[Num]+[Scroll]
Switch to [Scroll]++[Scroll] hot key mode
[Num]++[Num]+[Caps]
Switch to [Caps]++[Caps] hot key mode
[Num]++[Num]+[Ctrl]
Switch to [Ctrl]+[Shift] hot key mode
[Num]++[Num]+S
[Num]++[Num]+S + n
5.4 [Ctrl]+[Shift] mode (left-hand side)
Hot Key Definition
[Ctrl]++[Ctrl]
Switch to next live PC
[Ctrl + Shift + 1]
Switch to PC1
[Ctrl + Shift + 2]
Switch to PC2
[Ctrl + Shift + → or ↓]
Switch to Next PC
[Ctrl + Shift + ← or ↑]
Switch to Previous PC
[Ctrl + Shift + B]
Beeper ON/OFF (note2)
[Ctrl + Shift + F1~F8]
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)
[Ctrl + Shift + Scroll]
Switch to [Scroll]++[Scroll] hot key mode
[Ctrl + Shift + Caps]
Switch to [Caps]++[Caps] hot key mode
[Ctrl + Shift + Num]
Switch to [Num]++[Num] hot key mode
[Ctrl + Shift + S]
[Ctrl + Shift + S + n]
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).
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.
AU9226 USB KVM Controller V1.01W
9
Auto-scan rate set
【N】number
1
2
3
4
5
6
7
8
9
Second
5
10
15
20
25
30
35
40
60
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
10
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
AU9226 USB KVM Controller V1.01W
6. Electrical Characteristics
6.1 Recommended Operating Conditions
Table 6.1 Recommended Operating Conditions
SYMBOL
PARAMETER
MIN
TYP
MAX
UNITS
VCC
Power Supply
4.75
5
5.25
V
VIN
Input Voltage
0
VCC
V
TORP
Operating Temperature
0
85
OC
TSTG
Storage Temperature
-40
125
OC
6.2 General DC Characteristics
Table 6.2 General DC Characteristics
SYMBOL
PARAMETER
CONDITIONS
IIL
Input low current
IIH
Input high current
OZ
Tri-state leakage current
CIN
Input capacitance
5
ρF
COUT
Output capacitance
5
ρF
CBID
Bi-directional buffer
capacitance
5
ρF
no pull-up or
pull-down
no pull-up or
pull-down
MIN
TYP
MAX
UNITS
-1
1
µA
-1
1
µA
-10
10
µA
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
Input Low Voltage
CMOS
VIH
Input Hight Voltage
CMOS
VOL
Output low voltage
IOL=4mA, 16mA
VOH
Output high voltage
IOH=4mA,16mA
RI
Input Pull-up/down
resistance
Vil=0V or
Vih=VCC
AU9226 USB KVM Controller V1.01W
0.9
V
2.3
V
0.4
V
2.4
V
10k/20
0k
KΩ
11
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
Model
S/S
TARGET
Results
HBM
MM
Vdd, Vss, I/C
Vdd, Vss, I/C
15
15
2000V
200V
TBD
TBD
12
AU9226 USB KVM Controller V1.01W
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
+
Untested
Input Tied
to V supply
Pin
Pin
under
under
test
test
Vcc
DUT
V Supply
Untested
Output Open
Circuit
+
GND
Trigger
Source
Test Circuit : Positive Input/ output Overvoltage /Overcurrent
AU9226 USB KVM Controller V1.01W
13
Icc M easurem ent
mA
1 Source
+
V Supply
Vcc
Pin
under
test
Untested
Input Tied
to V supply
+
Untested
Output O pen
Circuit
DUT
GND
Trigger
Source
Test Circuit: Negative Input/Output Overvoltage/Overcurrent
Icc Measurement
mA
V Supply
Vcc
All Input Tied
to V supply
Untested
Output Open
Circuit
DUT
+
GND
Supply voltage Test
Figure 6.2 Latch-Up Test Circuits
Model
Model
+
Voltage
+
Current
Vdd-Vxx
Voltage (v)/ Current (mA)
11.0
11.0
200
200
9.0
S/S
Results
5
TBD
5
TBD
5
TBD
Table 6.5 Latch–Up Data
14
AU9226 USB KVM Controller V1.01W
7. Mechanical Information
Figure 7.1 Mechanical Information Diagram
E
0.25
E1
GAUGE PLANE
A1
SEATING PLANE
D D1
L
L1
C1
b
SYMBOLS
A
A1
A2
c1
D
D1
E
E1
e
b
L
L1
MIN.
MAX.
-1.6
0.05
0.15
1.35
1.45
0.09
0.16
9.00 BSC
7.00 BSC
9.00 BSC
7.00 BSC
0.5 BSC
0.17
0.27
0.45
0.75
1 REF
AU9226 USB KVM Controller V1.01W
A2
A
e
1. JEDEC OUTLINE: MS-026 BBC
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
IMCLUDING MOLD MISMATCH.
3. DIMENSION b DOES NOT INCLUDE
DAMBAR PROTRUSION. ALLOWABLE
DAMBAR PROTRUSION SHALL NOT
CAUSE THE LEAD WIDTH TO EXCEED
THE MAXIMUM b DIMENSION BY MORE
THAN 0.08mm
15
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.
16
AU9226 USB KVM Controller V1.01W