EM84510B Ver la hoja de datos (PDF) - ELAN Microelectronics
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EM84510B Datasheet PDF : 19 Pages
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EM84510
PS/2 SCROLLING MOUSE CONTROLLER
AC ELECTRICAL CHARACTERISTICS (TA=0°C to 70°C)
Parameters
Sym. Min.
Oscillating Frequency (OSCR=51KΩ)
Fosc 37.5-10%
Key Debounce
Tkd
-
Rising Edge Crossed Width Fosc=35 KHz
Tr
14.6
Falling Edge Crossed Width Fosc=35 KHz
Tf
14.6
Mouse CLK Active Time
Tmca
-
Mouse CLK Inactive Time
Mouse Sample DATA from
CLK rising Edge
System CLK Active Time
Tmci
-
Tmdc
-
Tsca
-
System CLK Inactive Time
Tsci
-
Time from DATA Transition to Falling Edge of CLK Tsdc
-
Time from rising Edge of CLK to DATA Transition
Tscd
-
Time to mouse Inhibit after the 11th CLK to
Tpi
0
ensure mouse does not start another Transmission
Typ. Max.
37.5 37.5+10%
12
-
-
-
-
-
40
-
40
-
13.3
-
40
-
40
-
13.3
-
26.7
-
-
50
PS. The AC timings are measured under using 35 KHz system clock signal.
TIMING DIAGRAM
(1) Photo-couples pulse width :
Unit
KHz
ms
us
us
us
us
us
us
us
us
us
us
X1 (Y1)
X2 (Y2)
Tr
Tf
(2) PS/2 Mouse
(A) Receiving DATA
CLK
DATA
Inhibit
1st
CLK
2nd
CLK
9th
CLK
10th
CLK
><
Tmca
><
Tmdc
><
Tmci
••••••••• •••
Start
Bit
Bit0 -Bit7
•••••
Parity
Bit
11th
CLK
•••••
Stop
Line
••
Bit Control
Bit
* This specification are subject to be changed without notice.
5.30.2001 12
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