EM84520
2-IN-ONE SCROLLING MOUSE CONTROLLER
c). Set default:
sampling rate: 100 reports/s
non-autospeed
stream mode
2 dots/count
disable
b). Resend ( FE )
a). Any time EM84520 receives an invalid command, it returns a Resend command to the system.
b). When EM84520 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.
c). In stream mode, if a Resend command is received by EM84520 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 EM84520.
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
28
3C
50
64
C8
20/sec
40/sec
60/sec
80/sec
100/sec
200/sec
g). Read Device Type ( F2 )
EM84520 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 )
EM84520 returns to the previous mode of operation after receiving this command.
k). Read Data ( EB )
* This specification are subject to be changed without notice.
6.28.1999
7
ELAN [ ELAN MICROELECTRONICS CORP ]
