參數(shù)資料
型號: MTA41300/P
元件分類: 微控制器/微處理器
英文描述: SPECIALTY MICROPROCESSOR CIRCUIT, PDIP18
封裝: 0.300 INCH, PLASTIC, DIP-18
文件頁數(shù): 26/28頁
文件大小: 466K
代理商: MTA41300/P
1995 Microchip Technology Inc.
DS40101C-page 7
MTA41300
3.2
PS/2 Message Data Format
The following PS/2 compliant data format is used by
the MTA41300 when transmitting data to the host and
when receiving data from the host. The data format
utilizes an 1-bit data frame that utilizes 8 bits for
message data and 3 bits for control.
PS/2 Data Frame Format:
Bit
Description
1
Start Bit (always 0)
2
Message Data Bit0, LSB
3
Message Data Bit1
4
Message Data Bit2
5
Message Data Bit3
6
Message Data Bit4
7
Message Data Bit5
8
Message Data Bit6
9
Message Data Bit7, MSB
10
Parity Bit (odd parity)
11
Stop bit (always 1)
The
MTA41300
mouse
controller
transmits
the
following three-byte data packet in response to a Read
Data (EBh) command or when operating in stream
mode with reporting enabled.
Status Message Data Byte 1:
Bit
Description
0
1= Primary Button Depressed
1
1= Secondary Button Depressed
2
Reserved
3
Reserved
4
X data sign, 1 = negative
5
Y data sign, 1 = negative
6
X data overflow, 1 = overflow
7
Y data overflow, 1 = overflow
Status Message Data Byte 2:
Delta X motion
Status Message Data Byte 3:
Delta Y motion
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