EM84510AP ELAN Microelectronics Corp, EM84510AP Datasheet - Page 8

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

* This specification are subject to be changed without notice.
Microsoft PS/2 scrolling mouse mode:
Z-axis Input Function : The Z0-Z7 limit value is 7
(A) Entering procedure: Except in WRAP mode, while EM84510 received the following consecutive
(B) Operating:
(C) Exiting Microsoft scrolling mode:
(a) Photo couples input : Z-axis counter accumulates the Z1, Z2 phase changed by movement. This mode
(b) Key-switches input : Pressing Z1, Z2 will start to fill the Z-axis counter with the value beginning at one.
i. F3 C8
ii. F3 64
iii. F3 50
a. All of the commands in legacy mode still be valid.
b. The ID code of read device type command (F2) will changed from "00" to be "03".
c. Data report will be four bytes format:
command.
There are two ways to exit:
a. Power off.
b. Reset command (FF).
includes noise immunity.
Z/1 : 1 dot per count.
Z/4 : 4 dots per count. Counted by Z1=1, Z2=1 phase, the wheel should stay at Z1=0, Z2=0 phase.
Toggling "M" key can increase the value any time by one. The limit value is 7.
The relationship between the value and the transmission rate as follows :
Byte
1
2
3
4
---- set sampling rate 200/sec
---- set sampling rate 100/sec
---- set sampling rate 80/sec
0-7
0-7
0-7
Bit
0
1
2
3
4
5
6
7
Description
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 )
Z data ( D0 - D7 )
PS/2 SCROLLING MOUSE CONTROLLER
5.30.2001
EM84510
8