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AU9223 USB KVM Controller V1.00
Official Release_ Public
Table 3.1 Pin Descriptions
Pin No. Pin Name I/O Type Description
1 AVCC PWR
Provides 3.3V analog input power to silicon;
Connects to BVCC;
2 AVSS PWR Ground Pin of AVCC Power Plane
3 XTAL1 I 12 MHz Crystal Input
4 XTAL2 O 12 MHz Crystal Output
5 VCC5V PWR 5V Input Power from USB port
6 BVCC PWR
Provides 3.3V analog output power from
internal regulator
7 BVSS PWR Ground Pin of BVCC Power Plane
8 SWITCHN I Push Button for switching to next system (0:
Enable; 1: Normal)
9 AUDIOSWITCHN I Audio On/Off Switch (1: Off; 0: On)
10 BUS_PWRD I Bus power selection (1: Device Self Power; 0:
Bus Power)
11 BEEP O Audio Output (4KHz frequency) when system
switches
12 DP4_PWRUP O Power Up For DownPort4
13 DOWNUSB4_DP I/O DownPort4 DP
14 DOWNUSB4_DM I/O DownPort4 DM
15 SYS1BUTTONN I System1 Enable (0: Enable ; 1: Normal)
16 SYS2BUTTONN I System2 Enable (0: Enable ; 1: Normal)
17 DP2_PWRUP O Power Up for DownPort2
18 DP1_PWRUP O Power Up for DownPort1
19 DOWNUSB2_DP I/O DownPort2 DP
20 DOWNUSB2_DM I/O DownPort2 DM
21 DOWNUSB1_DP I/O DownPort1 DP
22 DOWNUSB1_DM I/O DownPort1 DM
23 Virtual_KBD_Port1 I Control Virtual Keyboard Port1 (0: Enable; 1:
Disable)
24 VSS PWR Ground Pin for VCC Power Plane
25 VCC PWR 3.3 V Input Power; Connects to BVCC
26 SWITCHMODE0 I
27 SWITCHMODE1 I
Switch Mode Selection: (SW0, SW1)
(0,0): [Scroll][Scroll] Mode
(0,1): [CapsLock][CapsLock] Mode
(1,0): [NumLock][NumLock] Mode
(1,1): [CTRL][SHIFT] Mode (Left Hand Side)
28 Virtual_KBD_Port2 I Control Virtual Keyboard Port2 (0: Enable; 1:
Disable)
29 PS2_CLK/No
Connection I PS2 Clock Output; No Connection if only
support USB Keyboard
30 PS2_DAT/No
Connection I PS2 Data Output; No Connection if only support
USB Keyboard
31 Reserved Connect to ground; Reserved for system use
32 Reserved Connect to ground; Reserved for system use
