EM84520DP Ver la hoja de datos (PDF) - ELAN Microelectronics

Número de pieza

componentes Descripción

Fabricante

EM84520DP

2-in-one scrolling mouse controller

ELAN Microelectronics 

c). Set default:

sampling rate: 100 reports/s

non-autospeed

stream mode

2 dots/count

disable

EM84520

2-IN-ONE SCROLLING MOUSE CONTROLLER

Preliminary

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

0A

14

28

3C

50

64

C8

Sample Rate

10/sec

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

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