Alcor Micro AU9226, Техническое справочное руководство

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Pin # Pin Name I/O Description
25 VCC PWR 3.3V digital input power
26 SWITCHMODE0 I
27 SWITCHMODE1 I
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): [C
trl
][S
hift
] mode (left-hand side)
28 SWITCHMODE2 I
Enable external MCU mode (1: Enable; 0:
Disable). Disable is the default setting.
29 PS2_CLK I/O PS2 clock signal (external pull-up required)
30 PS2_DAT I/O PS2 data signal (external pull-up required)
31 D0 I/O
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'
32 D1 I/O
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'
33 D2 I/O
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'
34 GPO2 O General purpose output pin 2
35 GPO1 O General purpose output pin 1
36 GPO0 O General purpose output pin 0
37 MONITOREN0 O
Monitor Select : ('0' : Monitor1 Select ; ‘1’ :
Monitor2 Select)
38 D3 I/O
Data3 or Address3 when SWITCHMODE2='1' and
EXTCPUMOD='1'; I2C slave address1 when
SWITCHMODE2='1' and EXTCPUMOD='0';
39 D4 I/O
Data4 or Address4 when SWITCHMODE2='1' and
EXTCPUMOD='1'; I2C slave address2 when
SWITCHMODE2='1' and EXTCPUMOD='0';
AU9226 USB KVM Controller V1.01W
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