EM85000 Ver la hoja de datos (PDF) - ELAN Microelectronics
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EM85000 Datasheet PDF : 9 Pages
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EM85000
APPLE DESKTOP BUS MOUSE CONTROLLER
4.B3,B2=10:LISTEN command.(3 bytes)
LISTEN R3:Host writes controll status to mouse R3.
LISTEN R0 ~R2:No use in mouse.
Host must send 3 bytes. (1 byte command and 2 bytes register data to mouse R3)
TABLE 1
DEVICE ADDRESS
Device Address
Device Type
Addressing
Example
0
Reserved
Extended
1
Appliances
Extended
2
Encoded Device Movable
Keyboard address for initial address.
3
Relative Device Movable
Mouse address for initial address.
4
Absolute Device Movable
Tablet address for initial address.
5
Reserved
---------
6
Reserved
---------
7
Reserved
---------
8 ~F
Soft address
---------
1. Device address=0~F.
2. Movable:Host can change device address to new address(ex:Soft,reserved address)by LISTEN R3command.
TABLE 2
DATA STRUCTURE
COMMAND
LENGTH
DEVICE ECHO
DESCRIPTION
SENDRESET
1 BYTE
NO
FLUSH
1 BYTE
NO
TALK R0
1 BYTE
2 BYTES
If mouse has data to report,device echoes two
bytes(R0) to Host,otherwise no echo data.
TALK R1
---------
---------
No use.
TALK R2
---------
---------
No use.
TALK R3
1 BYTE
2 BYTES
Device always echoes two bytes(R3) to Host.
LISTEN R0
---------
---------
No use.
LISTEN R1
---------
---------
No use.
LISTEN R2
---------
---------
No use.
LISTEN R3
3 BYTES
NO
Host sends control status (R3) to mouse.
First byte:command.
Second and last bytes:R3 control register.
1. CODE:First byte reference TABLE 1.
2. LISTEN R3 command reference TABLE 4.
TABLE 3
* This specification are subject to be changed without notice.
11.6.1995 3
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