RSM84510 ETC, RSM84510 Datasheet - Page 4

• Manufacturer Part Number: RSM84510
• Description: PS/2 Scrolling Mouse Controller
• Manufacturer: ETC

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DataSheet
4
AC ELECTRICAL CHARACTERISTICS(TA = 0℃ to 70℃)
Oscillating Frequency(OSCR=51KΩ)
Key Debounce
Rising Edge Crossed Width Fosc=35 KHz
Falling Edge Crossed Width Fosc=35 KHz
Mouse CLK Active Time
Mouse CLK Inactive Time
Mouse Sample DATA from
CLK rising Edge
System CLK Active Time
System CLK Inactive Time
Time from DATA Transition to Falling Edge of CLK
Time from rising Edge of CLK to DATA Transition
Time to mouse Inhibit after the 11th CLK to
ensure mouse does not start another Transmission
PS. The AC timings are measured under using 35 KHz system clock signal.
FUNCTION DESCRIPTIONS
*WUXI RISONG MICRO ELECTRONIC CO.,LTD
U
.com
Legacy PS/2 mouse operating:
(A) Operating mode
There are four operating modes in PS/2 mouse:
a. Reset Mode:
b. Stream Mode:
The maximum rate of transfer is the programmed sample rate.
Data report is transmitted if
(a) switch is pressed
(b) movement has been detect
(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:
Parameters
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sampling rate: 100 reports/s
non-autospeed
stream mode
2 dot/count
disable
PS/2 SCROLLING MOUSE CONTROLLER
Tmdc
Tmca
Sym.
Tmci
F
Tsdc
Tscd
Tsca
Tkd
Tsci
Tpi
Tr
Tf
OSC
37.5-10%
Min.
14.6
14.6
0
-
-
-
-
-
-
-
-
Typ.
37.5
13.3
13.3
26.7
12
40
40
40
40
-
-
-
31/05/02
37.5+10%
Max.
RSM84510
50
-
-
-
-
-
-
-
-
-
-
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Unit
KHz
ms
ms
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