UT84520 Ver la hoja de datos (PDF) - Unisonic Technologies

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Fabricante

UT84520

PS/2 SCROLLING MOUSE CONTROLLER

Unisonic Technologies 

UTC UT84520

CMOS IC

f). A response is sent within 25ms if

a).The system requires a response

b).An error is detected in the transmission

g).UT84520 is in the stream mode

a).The system disables UT84520 before issuing any command requiring a response

b).When a command requiring a response is issued by the system, another command should not be issue until

either the response is received or 25ms has passed.

E). PS/2 Mouse Command Description

There are 16 valid commands that transmits between the system and UT84520. The"FA" code is always the first

response to any valid input received from the system other than a Set Wrap Mode or Resend command﹒

The following table list the commands:

Hex Code

FF

FE

F6

F5

F4

F3,XX

F2

F0

EE

EC

EB

EA

E9

E8,XX

E7

E6

Command

Reset

Resend

Set Default

Disable

Enable

Set Sampling Rate

Read Device Type

Set Remote Mode

Set Wrap Mode

Reset Wrap Mode

Read Data

Set Stream Mode

Status Request

Set Resolution

Set Auto-speed

Reset Auto-speed

UT84520 echo code

FA,AA,00

XX,(XX,XX)

FA

FA

FA

FA,FA

FA,00

FA

FA

FA

FA,XX,XX,XX

FA

FA,XX,XX,XX

FA,FA

FA

FA

The following describes valid commands

a). Reset (FF)

UT84520 operation:

a).Completion the reset

b). Transmitted FA, AA, 00 to the system.

c). Set default:

sampling rate: 100 reports/s

non-autospeed

stream mode

2 dots/count

disable

UTC UNISONIC TECHNOLOGIES CO., LTD. 10

QW-R502-004,A

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