EM84510

PS/2 SCROLLING MOUSE CONTROLLER

6

* This specification are subject to be changed without notice.

5.30.2001

stream mode

2 dots/count

disable

b). Resend ( FE )

i). Any time EM84510 receives an invalid command, it returns a Resend command to the system.

ii). When EM84510 receives a Resend command, it retransmits its last packet of data. If the last packet was

a Resend command, it transmits the packet just prior to the Resend command.

iii). In stream mode, if a Resend command is received by EM84510 immediately following a 3-byte data

packet transmission to the system.

c). Set Default ( F6 )

The command reinitializes all conditions to the power-on defaults.

d). Disable ( F5 )

This command is used in the stream mode to stop transmissions from EM84510.

e). Enable ( F4 )

Begins transmissions, if in stream mode.

f). Set Sampling Rate ( F3,XX )

In the stream mode, this command sets the sampling rate to the value indicated by byte hex XX,

shown in following:

Second byte XX

Sample Rate

0A

10/sec

14

20/sec

28

40/sec

3C

60/sec

50

80/sec

64

100/sec

C8

200/sec

g). Read Device Type ( F2 )

EM84510 always echoes “ FA,00 “ following this command.

h). Set Remote Mode ( F0 )

Data value are reported only in response to a Read Data command.

i). Set Wrap Mode ( EE )

Wrap mode remains until Reset ( FF ) or Reset Wrap Mode( EC ) is received.

j). Reset Wrap Mode ( EC )

EM84510 returns to the previous mode of operation after receiving this command.

k). Read Data ( EB )

This command is executed in either remote or stream mode. The data is transmitted even if there has been

no movement since the last report or the button status is unchanged. Following a Read Data command,

the registers are cleared after a data transmission.