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參數(shù)資料
| 型號： | EM85000 |
| 廠商： | ELAN Microelctronics Corp . |
| 英文描述： | APPLE DESKTOP BUS MOUSE CONTROLLER |
| 中文描述： | 蘋果桌面總線鼠標(biāo)控制器 |
| 文件頁數(shù)： | 4/9頁 |
| 文件大?。?/td> | 133K |
| 代理商： | EM85000 |
* This specification are subject to be changed without notice.
EM85000
APPLE DESKTOP BUS MOUSE CONTROLLER
4
11.6.1995
LISTEN R3 COMMAND
CODE
DESCRIPTION
Listen
R3
- - - -
3B
3B
SRQ
(B13)
B15
- - - - -
- - - - A3 A2 A1 A0 FE
Device
Address
~ B8
-
ID
Number
B7~B0
FF
-
-
Self Test.
Device will change to new address(A0~A3)if no collision
has been detected.
Device will change to new address(A0~A3)if no collision
and /Mkey is pressed.
IF no collision has been detected,device will change to
new address (A0~A3)and set (or clear)SRQ depend on B13(R3).
2 counts/dot for X/Y axis.
1 count/dot for X/Y axis.
3B
- - - - A3 A2 A1 A0 FD
3B
0 1 - 1 A3 A2 A1 A0 00
3B
3B
1. LISTEN R3:Host transmits data to device.
2. IF mouse Address=3 and Command=Listen R3 then command data=3B.(Ref table 1)
3. B0 ~ B 15:R3 control register.
TABLE 4
REGISTER DESCRIPTION
REGISTER 0 (R0):mouse counter data.
- - - - -
- - - - -
-
-
- -
-
01
02
-
B15 B14 B13
M
Y6
B12 B11
Y4
B10
Y2
B9
Y1
B8
Y0
B7
R
B6
X6
B5
X5
B4
X4
B3
X3
B2
X2
B1
X1
B0
X0
Y5
Y3
1. X0 ~ X6:X direction counter data.
2. Y0 ~ Y6:Y direction counter data.
3. X6(Y6)=0:Positive count when mouse move to right(down).
X6(Y6)=1:Negative count when mouse move to left(up).
Negative count uses 2’S complement form.
4. R:When right key is pressed,B7 is cleared to zero,otherwise B7 status is set to one.
5. M:When main key is pressed,B15 is cleared to zero,otherwise B15 status is set to one.
REGISTER 3 (R3):control register.
B15 B14 B13
0
EE SRQ
B12
1
B11 B10
A3
B9
A1
B8
A0
B7
D7
B6
D6
B5
D5
B4
D4
B3
D3
B2
D2
B1
D1
B0
D0
A2
1. D0 ~ D7:Device Handler ID number. (00h ~ FFh)
2. A0 ~ A3:Device Address can be changed when host send LISTEN R3 command with ID=00,FE,FD.
3. B12:Always be“1”.
4. SRQ:Can be set or cleared when host send LISTEN R3 command with ID=00.
SRQ=1:Device can transmit data to Host.
SRQ=0:Device can’t transmit data to Host.
5. EE(Exception Event status):No use=1.
6. B15:Always be“0”.
SIGNAL PROTOCOL
1. Attn(800us)+Sync(65us):Synchronous signal.
Host out Attn+Sync signals to tell device when to get command code.
2. Data and command code:Data bit is discriminated by pulse code modulation.
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