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PDF AU9228 Data sheet ( Hoja de datos )

Número de pieza AU9228
Descripción USB KVM Controller
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No Preview Available ! AU9228 Hoja de datos, Descripción, Manual

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AU9228
USB KVM Controller
Technical Reference Manual

1 page




AU9228 pdf
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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
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AU9228 arduino
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Pin #
24
25
26
Pin Name
DOWNUSB2_DM
DOWNUSB1_DP
DOWNUSB1_DM
27 WRN
28 EXTCPUMOD
29 VSS
30 VCC
31 SWITCHMODE0
32 SWITCHMODE1
33 SWITCHMODE2
34 RESERVED
35 RESERVED
36 PS2_CLK
37 PS2_DAT
38 D0
39 D1
40 D2
I/O
I/O
I/O
I/O
I
I
PWR
PWR
I
I
I
I/O
I/O
I/O
I/O
I/O
Description
DownPort2 DM
DownPort1 DP
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
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'
AU9228 USB KVM Controller V1.01W
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