EM84510AP ELAN Microelectronics Corp, EM84510AP Datasheet - Page 3

• Manufacturer Part Number: EM84510AP
• Description: PS/2 SCROLLING MOUSE CONTROLLER
• Manufacturer: ELAN Microelectronics Corp

* This specification are subject to be changed without notice.
FUNCTION DESCRIPTIONS
B). PS/2 Mouse Data Report:
Legacy PS/2 mouse operating:
(A) Operating mode
There are four operating modes in PS/2 mouse:
a. Reset Mode:
b. Stream Mode:
c. Remote Mode:
d. Wrap Mode:
i). In stream mode: A data report is sent at the end of a sample interval.
ii). In remote mode: A data report is sent in response to Read Data command.
iii). Data report format:
(a) Completion code AA & ID code 00.
(b) Set default :
In this mode a self-test is initiated during power-on or by a Reset command. After reset signal, PS/2 mouse
will send:
The maximum rate of transfer is the programmed sample rate.
Data report is transmitted if
(a) switch is pressed
(b) movement has been detect
Data is transmitted only in response to a Read Data command.
Any byte of data sent by the system, except hex EC ( Reset wrap mode ) or hex FF ( Reset ), is returned
by EM84510.
Byte
1
2
3
sampling rate: 100 reports/s
non-autospeed
stream mode
2 dot/count
disable
Bit
0
1
2
3
4
5
6
7
0-7
0-7
Left button status; 1 = pressed
Right button status; 1 = pressed
Middle button status; 1 = pressed
Reserve
X data sign; 1 = negative
Y data sign; 1 = negative
X data overflow; 1 = overflow
Y data overflow; 1 = overflow
X data ( D0 - D7 )
Y data ( D0 - D7 )
Description
PS/2 SCROLLING MOUSE CONTROLLER
5.30.2001
EM84510
3