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WIN2000 3D PS/2 Mouse Controller
Features
* * * *
HT82M398A
Compatible with Microsoft Windows 2000 and 5-button Wheel Mouse Compatible with Microsoft Intelli 3D PS/2 and IBM PS/2 mouse Supports rolling buttons in PS/2 mouse mode X/Y axis photo input with built-in Holteks special dynamic photo-input resistor
* * * *
Supports three buttons and three axes (X, Y, Z) inputs Z axis can support two kinds of scroller input (optomechanical and mechanical) 2MHz RC oscillator for system frequency with external pull-high resistor 16-pin DIP package
General Description
The HT82M398A is a Plug and Play WIN2000 and 5-button 3D PS/2 mouse controller. It is also compatible with Microsoft Intelli 3D PS/2 and IBM PS/2 mouse. The Z axis can support two kinds of scroller input, namely; mechanical and optomechanical.
Pin Assignment
Z1 1 2 3 4 5 6 7 8 Z2 VDD B5 VSS OSCI CLK DATA 16 15 14 13 12 11 10 9 Y2 Y1 X2 X1 B4 LB R0 RB
HT82M 398A 1 6 D IP
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February 22, 2000
HT82M398A
Pin Description
Pin No. 1, 2 3 4 5 6 7 8 Pin Name Z1, Z2 VDD B5 VSS OSCI CLK DATA I/O I 3/4 I 3/4 I I/O I/O Description Z, axis input supports two kinds of scroller input, namely; optomechanical and mechanical. Positive power supply Button 5, normal pull-low (50kW), Press connect to high. Negative power supply 2MHz RC oscillator for system frequency with external pull-high resistor and built-in Capacitor. CLK I/O, PS/2 mouse CLK line. NMOS open drain output with 5kW pull-high resistor. DATA I/O, PS/2 mouse DATA line. NMOS open drain output with 5kW pull-high resistor. Right Button: Normal pull-low (50kW), Pressing the button connects to high. Rolling Button: Normal pull-low (50kW), Pressing the button connects to high. Left Button: Normal pull-low (50kW), Pressing the button connects to high. Button 4, normal pull-low (50kW), Press connect to high. X/Y axis photo input with built-in Holteks special dynamic photo input resistor
9~11
RB, RO, LB
I
12 13~16
B4 X1, X2, Y1, Y2
I I
Absolute Maximum Ratings
Supply Voltage..............................-0.3V to 6.5V Input Voltage .................VSS-0.3V to VDD+0.3V Storage Temperature.................-50C to 125C Operating Temperature ..............-25C to 70C
Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.
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February 22, 2000
HT82M398A
Electrical Characteristics
Symbol VDD IOP fOSC VIL1 VIH1 VIL2 VIH2 RPH2 Isink VIL3 VIH3 RPL3 VIL4 VIH4 RPL5 Parameter Operating Voltage Operating Current RC Oscillator Input Low Voltage (Z1, Z2) Input High Voltage (Z1, Z2) Input Low Voltage (CLK, DATA) Input High Voltage (CLK, DATA) Pull-high Resistor (CLK, DATA) Sink Current (CLK, DATA) Input Low Voltage (RB, Ro, LB) Input High Voltage (RB, Ro, LB) Pull-low Resistor (RB, Ro, LB) Input Low Voltage (X1,X2,Y1,Y2) Input High Voltage (X1, X2, Y1, Y2) Dynamic Photo-resistor (X1, X2, Y1, Y2, Z1, Z2) Test Conditions VDD 3/4 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V Conditions 3/4 ROSC=120kW ROSC=120kW 3/4 3/4 3/4 3/4 VIL=0V VOH=0.4V 3/4 3/4 VIL=0V 3/4 3/4 3/4 Ta=25C Min. Typ. Max. Unit 4.5 3/4 1.6 0 2.2 0 2.0 2 4 0 1.8 3.0 0 2.2 5.0 3/4 2 3/4 3/4 3/4 3/4 5 3/4 3/4 3/4 60 3/4 3/4 5.5 15 2.2 1.5 5 0.8 5.0 10 3/4 1.0 5 125 1.5 5 V mA V V V V V kW mA V V kW V V
See Dynamic resistor characteristics
Dynamic resistor characteristics
* R-V curve
Photo_R: R-V
R
V
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February 22, 2000
HT82M398A
Functional Description
PS/2 mouse
* PS/2 status byte * Data format for 5-button Wheel Mouse
Bit No. 1st word
7 0
6 0
5
4
3 1
2 M
1 R
0 L
Byte 1 bit 7: Reserved 6: 0=Stream Mode, 1=Remote Mode 5: 0=Disabled, 1=Enabled 4: 0=Scaling 1:1, 1=Scaling 2:1 3: 1=Wrap Mode, 0=Stream or Remote (different from IBM specs.) 2: 1=Left Button Pressed 1: 1=Middle Button Pressed 0: 1=Right Button Pressed Byte 2 Bit 0~7 current resolution setting (Bit 0=LSB) Byte 3 Bit 0~7 current sampling rate (Bit 0=LSB)
* Standard PS/2 data format
YS XS
2nd word X7 X6 X5 X4 X3 X2 X1 X0 3rd word Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 4th word 0 0 B5 B4 Z3 Z2 Z1 Z0
X movement towards the right is positive, moving towards the left is negative Y upward movement is positive, moving down is negative Z rolling towards the user is positive, else negative Button status: 1=pressed, 0=released
* 5-button Wheel Mouse Mode follows the
Variable rps, 0, 8, 1, bidirectional, synchronous Bit No. 1st word 7 6 5 4 3 1 2 M 1 R 0 L YV XV YS XS
5-button Activation Method of Windows 2000 and the 5-button Wheel Mouse Specification. Any time the PC sends a reset FFh command to the mouse, it will reset the mouse to Standard PS/2 mode. After power-on reset is initiated, the mouse is set to Standard PS/2 mode.
2nd word X7 X6 X5 X4 X3 X2 X1 X0 3rd word Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0
* Data format for 3D PS/2
Variable rps, 0, 8, 1, bidirectional, synchronous Bit No. 1st word 7 0 6 0 5 4 3 1 2 M 1 R 0 L YS XS
2nd word X7 X6 X5 X4 X3 X2 X1 X0 3rd word Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 4th word Z7 Z6 Z5 Z4 Z3 Z2 Z1 Z0 The x/y data report is 9-bit 2s complement The z data report is 8-bit 2s complement
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February 22, 2000
HT82M398A
Timing Diagrams
X, Y axis photo-coupler cross width
X 1 (Y 1 ) X 2 (Y 2 ) tr tp tr, tp , tf > 2 0 m s tf
X/Y/Z axis counting
X1 X2 +1 Z1 Z2 +1 +1 -1 -1 +1 +1 +1 -1 -1 -1 -1
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February 22, 2000
HT82M398A
PS/2 mouse
* Data output
(1 ) CLK (3 )
1st CLK
(3 )
2nd CLK
(3 )
(3 )
1 0 th CLK
(4 )
1 1 th CLK
T6
T3 (2 ) DATA T1 S ta r t B it T2
T4 B it 0 P a r ity B it
T5
(5 )
(7 )
S to p B it (6 )
T im in g P a r a m e te r
M in ./M a x . 5 /2 5 m s e c 5 /T 4 -5 m s e c 3 0 /5 0 m s e c 3 0 /5 0 m s e c >0 msec <50 msec
T1 T2 T3 T4 T5
T6
D A T A tr a n s itio n to th e fa llin g e d g e o f C L K R is in g e d g e o f C L K to D A T A tr a n s itio n In a c tiv e C L K D u r a tio n A c tiv e C L K D u r a tio n M in im u m tim e to in h ib it M O U S E a fte r c lo c k 1 1 M a x im u m tim e to in h ib it M O U S E a fte r c lo c k 1 1 to e n s u r e M O U S E d o e s n o t s ta r t a n o th e r tr a n s m is s io n
* Data input
(1 ) CLK (2 ) I/O In h ib it (4 ) 1 s t CLK 2nd CLK 9 th CLK 1 0 th CLK 1 1 th CLK (8 ) (6 ) P a r ity B it (5 ) S to p B it (7 )
T7 T9 DATA S ta r t B it (3 )
T8 B it 0 (5 )
T im in g P a r a m e te r T7 T8 T9 C L K D u r a tio n , lo w C L K D u r a tio n , h ig h T im e fr o m lo w to h ig h C L K tr a n s itio n to tim e w h e n M O U S E s a m p le s D A T A lin e
M in ./M a x . 3 0 /5 0 m s e c 3 0 /5 0 m s e c 5 /2 5 m s e c
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February 22, 2000
HT82M398A
Application Circuits
HT82M398A Z axis optomechanical (this application circuit is for reference only)
V 0 .1 m F IR 120kW IR
CC
1 .5 k W 1 2 3 4 5 6 CLK DATA 8 7 16 15 14 13 12 11 10 9 IR
Z1 Z2 VDD B5 VSS OSCI CLK DATA
Y2 Y1 X2 X1 B4 LB Ro RB
S4 S1 S2 S3
1 .5 k W
S5
HT82M 398A
HT82M398A Z axis mechanical (this application circuit is for reference only)
V 0 .1 m F 120kW IR
CC
E ncoder EVZVXC 00112B 1 2 3 4 5 6 CLK DATA 8 7 Z1 Z2 VDD B5 VSS OSCI CLK DATA Y2 Y1 X2 X1 B4 LB Ro RB 9 16 15 14 13 12 11 10 IR
S4 S1 S2 S3
1 .5 k W
S5
HT82M 398A
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February 22, 2000
HT82M398A
Holtek Semiconductor Inc. (Headquarters) No.3 Creation Rd. II, Science-based Industrial Park, Hsinchu, Taiwan, R.O.C. Tel: 886-3-563-1999 Fax: 886-3-563-1189 Holtek Semiconductor Inc. (Taipei Office) 5F, No.576, Sec.7 Chung Hsiao E. Rd., Taipei, Taiwan, R.O.C. Tel: 886-2-2782-9635 Fax: 886-2-2782-9636 Fax: 886-2-2782-7128 (International sales hotline) Holtek Semiconductor (Hong Kong) Ltd. RM.711, Tower 2, Cheung Sha Wan Plaza, 833 Cheung Sha Wan Rd., Kowloon, Hong Kong Tel: 852-2-745-8288 Fax: 852-2-742-8657 Copyright O 2000 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw.
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February 22, 2000

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