AU9228 查看數據表（PDF） - Unspecified

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产品描述 (功能)

生产厂家

AU9228

USB KVM Controller

Unspecified 

Table 3.1 Pin Descriptions

Pin #

1

2

3

4

5

6

7

8

9

Pin Name

UP4LEDN

AVCC

AVSS

XTAL1

XTAL2

VCC5V

BVCC

BVSS

SWITCHN

10 AUDIOSWITCHN

11

BUS_PWRD

12

BEEP

13

INTN

14

GND

15

GND

16

SYS1BUTTONN

17

ALE

18

SYS2BUTTONN

19

SYS3BUTTONN

20

SYS4BUTTONN

21

CSN

22

RDN

23 DOWNUSB2_DP

I/O

O

PWR

PWR

I

O

PWR

PWR

PWR

I

I

I

O

O

I

I

I

I

I

I

I

I/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

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

4

AU9228 USB KVM Controller V1.01W

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