AU9226 데이터 시트보기 (PDF) - Unspecified

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AU9226

USB KVM Controller

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Table 3.1 Pin Descriptions

Pin #

1

2

3

4

5

6

7

8

Pin Name

AVCC

AVSS

XTAL1

XTAL2

VCC5V

BVCC

BVSS

SWITCHN

9

AUDIOSWITCHN

10

BUS_PWRD

11

BEEP

12

INTN

13

GND

14

GND

15

ALE

16

CSN

17

RDN

18 DOWNUSB2_DP

19 DOWNUSB2_DM

20 DOWNUSB1_DP

21 DOWNUSB1_DM

22

WRN

23

EXTCPUMOD

24

VSS

I/O

PWR

PWR

I

O

PWR

PWR

PWR

I

I

I

O

O

I

I

I

I/O

I/O

I/O

I/O

I

I

PWR

Description

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

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)

DownPort2 DP

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

4

AU9226 USB KVM Controller V1.01W

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