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參數(shù)資料
| 型號： | MTA41110/SO |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PDSO18 |
| 封裝： | 0.300 INCH, PLASTIC, SOIC-18 |
| 文件頁數(shù)： | 19/24頁 |
| 文件大?。?/td> | 377K |
| 代理商： | MTA41110/SO |
MTA41110
DS40103C-page 4
1995 Microchip Technology Inc.
2.1
PS/2 COMMANDS
2.1.1
RESET
CODE: FFH
This command initiates a reset sequence in the
MTA41110 mouse controller. First, all internal registers
and communication parameters are cleared. Next, the
status registers are set to the default condition. Finally,
the MTA41110 transmits a AAh followed by a 00h, this
informs the host that the initialization is complete and
that the controller is a standard mouse type.
2.1.2
RESEND
CODE: FEH
Anytime the MTA41110 controller receives an invalidly
formatted
command,
it
will
transmit
a
Resend
command to the host. The controller will ignore invalid
commands and will continue to operate in its present
mode. When any command other than a Resend is
received by the controller it will clear its motion and
displacement counters.
The host system may send a Resend command to the
controller if an error is detected in a transmission from
the controller. When the controller receives a Resend
command, it will retransmit the last data packet
transmitted. If the last packet transmitted was a
Resend command, the packet prior to the last packet
will be re-transmitted.
Command Summary:
Command
Code, Data
Reset
FFh
Resend
FEh
Set Default
F6h
Disable Reporting
F5h
Enable Reporting
F4h
Set Report Rate
F3h , XXh
Read Device Type
F2h
Set Remote Mode
F0h
Set Wrap Mode
EEh
Reset Wrap Mode
ECh
Read Data
EBh
Set Stream Mode
EAh
Status Request
E9h
Set Resolution
E8h , XXh
Set Scaling
E7h
Reset Scaling
E6h
2.1.3
SET DEFAULT
CODE: F6H
The Set Default command re-initializes all controller
parameters to the power-up state. The controller
initializes the following status registers.
This
command
does
not
initiate
any
self-test
diagnostics. The controller remains in the disabled
state until another command is received from the host.
2.1.4
DISABLE REPORTING
CODE: F5H
The Disable
Reporting command prevents data
transmission by the controller while it is in the Stream
Mode. However, the controller will still respond to other
commands. When reporting is disabled, Stream Mode
must be disabled prior to the host sending a command
that requires a response by the controller.
2.1.5
ENABLE REPORTING
CODE: F4H
The Enable Reporting command allows the controller
to transmit data when in Stream Mode. This command
has no effect while the controller is in Remote Mode.
2.1.6
SET REPORT RATE
CODE: F3H , XXH
This command updates the report rate status register
with the data contained in the second byte of the
command. However, the physical report rate remains
fixed at 40 times per second. This command only exists
to ensure compatibility.
2.1.7
READ DEVICE TYPE
CODE: F2H
The controller always transmits a 00h in response to
receiving this command. This informs the host that a
standard mouse is present.
2.1.8
SET REMOTE MODE
CODE: F0H
Remote Mode is entered when the controller receives
this command. In Remote Mode, event packets are
transmitted to the host only when a read data
command is received by the controller.
2.1.9
SET WRAP MODE
CODE: EEH
Wrap Mode is entered when the controller receives this
command. In Wrap Mode, the controller will echo all
commands that are received back to the host. Note,
the Reset and Reset Wrap commands will cancel Wrap
Mode and neither of these commands will be echoed
back to the host. Wrap Mode can be enabled in either
Reporting Mode, Stream Mode or Remote Mode.
Report rate:
100 reports per second
Scaling:
Linear
Mode:
Streaming
Resolution:
Physical Resolution / 2
Reporting:
Disabled
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