TP8452 查看數據表（PDF） - Topro

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TP8452

PS/2 2D 3Key Mouse Controller

Topro 

TP8452

PS/2 2D 3Key Mouse

Controller

a. A Resend command ( FE ) following receipt of an invalid input or any input with incorrect

polarity.

b. If two invalid input are received in succession, an error code of hex FC will be sent to the

system.

c. The counter accumulators are cleared after receiving any command except “Resend”.

d. As TP8452 receives a Resend command ( FE ), it transmits its last packet of data.

e. In the stream mode ”Resend” is received by TP8452 following a 3-byte data packet

transmission to the system. TP8452 resend the 3-byte data packet prior to clearing the counter.

f. A response is sent within 25 ms if

(a) The system requires a response

(b) An error is detected during transmission

g. When a command requiring a response is issued by the system ,another command should not

be issued until either the response is received or 25ms has passed.

(E) PS/2 Mouse Commands Description:

There are 16 valid commands that transmits between the system and TP8452. The “EA” 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:

Page 11 of 20

Hex Code

FF

FE

F6 Set

F5

F4

F3,XX

F2

F0

EE

Command

Reset

Resend

Default

Disable

Enable

Set Sampling

Read Device Type

Set Remote Mode

Set Wrap Mode

TP8452 echo code

FA,AA,00

XX,(XX,XX)

FA

FA

FA

Rate FA,FA

FA,00

FA

FA

TOPRO CONFIDNETIAL

2003/7/31 Print

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