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A2624/A2625
Turbo 3D USB+PS/2 optical mouse controller
1. General Description
A2624/A2625 is a 3D 5key crystal-free optical mouse controller designed for USB and PS/2 applications. It minimizes external components to ensure competitive low cost BOM. A2624/A2625 supports the USB Standard v1.1 as well as HID Class Definition v1.1. It is compatible with Microsoft 3D Intellimouse and IBM PS/2 mouse. It also supports mechanical scroll, opto-mechanical scroll.
2.
Features
Crystal-free design with internal oscillator directly feeding clock to sensor www..com implements totally crystal-free system design Spread spectrum function to reduce EMI SPI interface to control the sensor IC with minimal wire line connection Microsoft 3D Intellimouse and IBM PS/2 mouse compatible Complete USB v1.1 1.5Mbps compatibility Complete USB HID v1.1 compatibility USB Plug and Play functions Compatible with PS/2 protocol Supports Windows2000 and XP ,ME, 98/DOS (with USB driver) USB-IF certification passed WHQL certification passed Variable resolution selection for multi-resolution sensor Built-in de-bounce circuits Built-in 3.3V regulator Built-in power-on reset Suspend function and wake-up feature to reduce power consumption Minimal external components 18-pin DIP package. ROHS compliant Supports mechanical and opto-mechanical axis Z scroll Supports dynamic acceleration up to X2.5 Supports sensor rolling clockwise 90 degree Supports double-click and continuous-click USB only mode supported
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A2624/A2625
Turbo 3D USB+PS/2 optical mouse controller
3. Block Diagram
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Figure 1:
Block Diagram
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Turbo 3D USB+PS/2 optical mouse controller
4. Pin Assignment
A2624 is 5-button 18-pin with UP/DOWN dynamic acceleration for 400 DPI sensor only. A 2625 is 5-button 18-pin with UP/DOWN dynamic acceleration for all sensors.
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Figure 2:
Pin Assignment (Top View)
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Turbo 3D USB+PS/2 optical mouse controller
5. Pin description
Pin description
Table 1
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Pin Name VSS D+/CLK D-/DATA SCLK SDIO PD OSC1 UP 4th Key 5th Key DOWN OSC2 Z1 Z2 L R M VDD
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I/O -I/O I/O O I/O O I I I I I O I I I I I --
Description Ground USB data plus or PS2 Clock, USB data minus or PS2 Data, SPI Clock. SPI Data Power Down control for sensor External resistor for frequency fine tune(see table 9) Acceleration key Input and optional function select(see table 7) Forward Acceleration Button and optional function select (see table 5) Backward deceleration Button and optional function select (see table 6) deceleration key Input and optional function select(see table 8) Clock output for test Z-Axis Input Z-Axis Input Left Button and optional function select (see table 2) Right Button and optional function select (see table 3) Middle Button and optional function select (see table 4) 5V power supply
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Turbo 3D USB+PS/2 optical mouse controller
5.1 Strap pin setting on L, R, M L key setting Setting 500K pull-up L 2.1M pull-down 910k pull-down 280k pull-down Voltage(V) VDD 5/8 VDD 3/8 VDD 1/8 VDD Z/2 Z/4 Z/2 Z/4 Function rotate 0 rotate 0 rotate 90 rotate 90
Table 2 Pin
Note: Z/2 means counter for wheel is divided by 2. Z/4 means counter for wheel is divided by 4. Rotate 0 means normal sensor bonding. Rotate 90means sensor bonding www..com 90clockwise rotation. with Table 3 Pin R key setting Setting 500K pull-up R 2.1M pull-down 910k pull-down 280k pull-down Voltage(V) VDD 5/8 VDD 3/8 VDD 1/8 VDD U+P U+P USB only USB only Function No SS SS No SS SS
Note: U+P means USB and PS/2 mode can be supported. SS is spread-spectrum function for EMI reduction. Table 4 Pin M key setting Setting 500K pull-up M 2.1M pull-down 910k pull-down 280k pull-down Voltage(V) VDD 5/8 VDD 3/8 VDD 1/8 VDD Dynamic-resolution 1:1 1.5:1 2:1 2.5:1
5.2
Strap pin setting on 4th Key, 5th Key 4th key setting Setting OPEN 50K pull-down Function 3-key mode 5-key mode
Table 5 Pin 4th Key
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Turbo 3D USB+PS/2 optical mouse controller
Table 6 Pin 5th Key 5th key setting mode 3-key mode 5-key mode Function double click Forward acceleration
5.3 Strap pin setting on UP, DOWN Table 7 Pin www..com UP UP key setting Setting OPEN 50K pull-down Function Resistance control acceleration KEY control acceleration
Table 8
DOWN key setting Setting OPEN 50K pull-down Functions Reserved Reserved
Pin Name DOWN
5.4
5-Key function
The 5 -key function is implemented in the A2624/A2625. A. when 5-key function is enabled, the 4th and 5th keys perform as normal keys. B. when 5-key function is disabled 1. Option 1 ---- when the 5th key is pulled down by resistor A click on 4th key indicates double-clicking of left key. Hold Pressing down the 5th key indicates continuing-clicking of left key. Releasing the 5th key stops the clicking. 2. Option 2 ---- When the 5th key is floating A click on 4th key indicates double-clicking of left key A click on 5th key indicates continuing-clicking the left key. The second click indicates stopping continuing-clicking of left key. 5.5 UP/DOWN function
UP key is used to increase the DPI resolution one level by one click. DOWN key is used to decrease DPI resolution one level by one click there are 4 level resolution modes ( e.g x2.5, x2.0, x1.5 and x1.0). The default mode of UP/Down key is x1.0
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Turbo 3D USB+PS/2 optical mouse controller
5.6 Setting OSC frequency output Table 9 Resistor R value 42K 58.5K
C lo ck F req u en cy
24M H z 20M H z 18M H z
OSC2 frequency output 24MHz1MHz 18MHz0.7MHz
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51K 58.5K
42K
R (U n it:o h m )
Typically R value VS. frequency
5.7 5.7.1
SPI interface definition Signals definition
a. SCLK: The serial port clock. It is always generated by A2624/A2625. b. SDIO: The data line. It is bi-directional signal. c. PD: Power Down. It's usually used to place the sensor in a low power mode to meet USB suspend specification. It can also be used to force re-synchronization between A2624/A2625 and the sensor in case of an error. It also provides the sink current for the infrared diode for the axis Z.
5.7.2
SCLK timing definition
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Turbo 3D USB+PS/2 optical mouse controller
5.7.3
SPI Write operation
A2624/A2625 drives the SCLK to sensor. The address and data will be driven on SDIO at each negative edge of SCLK. The bit sequence is shown below.
www..com 5.7.4 SPI Read operation
A2624/A2625 always drives the SCLK to sensor. The address will be driven out on SDIO at each negative edge of SCLK. After address transaction, the SDIO will be left hiZ until sensor drives the data on it at each negative edge of SCLK. A2624/A2625 captures the data at each negative edge of SCLK. The bit sequence is shown below.
There is data waiting time requirement for reading of A2624/A2625 between the last address bit and the first data bit the sensor drives. The timing diagram for sensor to prepare the data to be sent is shown below.
There is turning around time requirement between the last data bit the sensor sent and the command bit A2624/A2625 drives. A2624/A2625 will leave the SDIO hiZ at the falling edge of SCLK at least 160ns to avoid bus conflict.
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Turbo 3D USB+PS/2 optical mouse controller
5.7.5
SPI PD re-syncs
After power on or ESD event, the SPI bus will be in unknown state. The PD pulse can be used to re-sync the SPI bus. www..com
5.7.6
SPI I/O configuration
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Turbo 3D USB+PS/2 optical mouse controller
6. Absolute Maximum Ratings (Ta=25)
Characteristic Supply Voltage Input Voltage Operating Temperature Storage Temperature Symbol VCC VIN TOPR TSTG Value -0.5 ~ 7.0 VSS-0.5 ~ VDD+0.5 V -15 ~ +55 -65 ~ +150 Unit V V C C
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 www..com prolonged exposure to extreme conditions may affect device reliability.
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Turbo 3D USB+PS/2 optical mouse controller
7. Electrical Characteristics (Ta=25)
Parameter Operating Voltage Operating Current 5V Test Conditions VDD -No load Conditions -USB mode PS/2 mode No load, system suspend _ _ -Min 4.5 _ _ 75 0 3.5 2.8 Type -8.5 6.5 90 _ _ -Max 5.5 12 10 95 1.0 5 3.6 Unit V mA mA uA V V V V 5V 3.0 3.6 V V 5V 2.1 5 V 5V 0 0.9
Symbol VDD IDD
ISTB
Standby Current Input Low Voltage for I/O Ports Input High Voltage for I/O Ports Input High Voltage for USB I/O Ports Input High Voltage for SDIO SCLK out Ports Input Low Voltage for SDIO SCLK out Ports Input High Voltage for SDIO SCLK in Ports Input Low Voltage for SDIO SCLK in Ports Power on Reset VDD Detection Voltage Output Port Current (LED) Sink
5V 5V 5V 3.3V
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VIH1
VIH2
VOH3 VOL2
5V
0
0.3
VIH3 VIL2
VPOR IOL1
5V
-VOL=0.5V
3.5
--
3.9
V
5V
--
20
--
mA
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Turbo 3D USB+PS/2 optical mouse controller
8. Typical Application circuits
8.1 Application circuit 1
5V C1 0.1uF U1 1
0
330K
2
1
1 2 1 1 1 1 1 1
1
Vss D+/CLK D-/DATA SCLK SDIO PD OSC1 UP 4th
VDD M R L Z2 Z1 OSC2 DOWN 5th
18 5V 17 M
5V + C2
U2 VCC Vss D+ DVSS 5PIN Con
0
R2
R4 2 2 1 D+/CLK
D+/CLK 2 D-/DATA3
C3 0.1uF
2
01
R1 33R 1 33R
2
16 R 15 L 14 Z2
10uF
SCLK D-/DATA SDIO PD 330K OSC1 UP 4th
4 5 6 7 8 9
0
M
1
0
SW1 MBUT SW2 RBUT SW3 LBUT SW4 FBUT SW5 BBUT SW6 UPBUT SW7 DNBUT U4 4 2 2 2 2 2 2 2
13 Z1 12 OSC2 11 DOWN L 10 5th 4th REFA 5V UP 6 5th R
0 0 0 0 0 0 0
5V C5 0.1uF
0
R8
R3 2 2 220K Rosc
0
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5V 1
SCLK
5V
1 * C4 1 2
2OSC1 1 OSC 2 SDIO 3 SCLK 4
A2625/A2624 U3 OSC_IN OSC_OUT SDIO SCLK PAN3101 REFA VDD GND LED 8 7
0
OSC2 1
0.1uF R6 2 OSC * MAX=2.2K
0
DOWN 1
5LED_CNTL
R7 * 5V 1 68
D1 12 LLED 2 LED_CNTL
5V 1 Z1 2 Z2 3
NC 2 NC1
VCC Z1 Z2 5 Zaxis
1 2 2 2
0
5V
M
1 R10 * 1 R11 *
2 2
5V R
0
1 R14 * 1 R15 *
2 2
5V L
0
1 R18 * 1 R19 *
0
4th
1 R13 *
2
0
5th
1 R17 *
2
0
UP
1 R21 *
2
0
DOWN R23 1 *
0
Figure 3:
Typical Application Circuit 1
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Turbo 3D USB+PS/2 optical mouse controller
8.2
Application circuit 2
5V C1 0.1uF U1 1 1 18 5V 17 M 2 16 R 15 L 14 Z2 M 13 Z1 12 OSC2 11 DOWN L 10 5th 4th 5th OSC * 11 OSC_OUT VDD SDIO SCLK PD REFA REFB XA XB YB YA GND GND RIN OSC_IN LED 13 12 10 14 9 6 5V SDIO 16 SCLK PD REFA REFB 2 LED 1 15 7 8 UP 1 1 1 1 R 1 1 5V + C2 10uF 2
0
330K
Vss D+/CLK D-/DATA SCLK SDIO PD OSC1 UP 4th
VDD M R L Z2 Z1 OSC2 DOWN 5th
2
1
1
U2 VCC Vss D+ DVSS 5PIN Con
0 0
R2 1
R4 2 2 1 D+/CLK
D+/CLK 2 D-/DATA3
C3 0.1uF
2
SCLK D-/DATA SDIO PD 330K OSC1 UP
4 5 6 7 8 9
0
1
R1 33R 1 33R
0
SW1 MBUT SW2 RBUT SW3 LBUT SW4 FBUT SW5 BBUT SW6 UPBUT SW7 DNBUT U4 4 2 2 2 2 2 2 2
0 0 0 0 0 0 0
5V C5 0.1uF
0
R3 2 R8
0
2 SCLK
4th
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5V
1
5V
1 1
220K Rosc 2OSC1 C4 2
A2625/A2624 U3
0
0 0
RIN OSC_IN LED
0.1uF Remi OSC2 1 2 OSC * MAX=2.2K R7 5V 1 68 1 R10 * 1 R11 * 4th 1 R13 * 2 2 * D1 12 LLED 5V
DOWN 1
HDNS2051
Zaxis 5V L 1 R18 * 1 R19 * 2 2
NC1
2 3 4 5
2
5V 1 Z1 2 Z2 3
NC
VCC Z1 Z2 5
1
0
M R 1 R14 * 1 R15 * 2 2 2 5V
0
2 5th 1 R17 *
0
1 R21 * 2
0
2
0
0
UP
0
DOWN R23 1 *
0
Figure 4:
Typical Application Circuit 2
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A2624/A2625
Turbo 3D USB+PS/2 optical mouse controller
8.3
Application circuit 3
5V C1 0.1uF U1 1
0
330K
2
1
1 2 1 1 1 1 1 1
1
Vss D+/CLK D-/DATA SCLK SDIO PD OSC1 UP 4th
VDD M R L Z2 Z1 OSC2 DOWN 5th
18 5V 17 M
5V + C2
U2 VCC Vss D+ DVSS 5PIN Con
0
R2
R4 2 2 1 D+/CLK
D+/CLK 2 D-/DATA3
C3 0.1uF
2
01
R1 33R 1 33R
2
16 R 15 L 14 Z2
10uF
SCLK D-/DATA SDIO PD 330K OSC1 UP
4 5 6 7 8 9
0
M
1
0
SW1 MBUT SW2 RBUT SW3 LBUT SW4 FBUT SW5 BBUT SW6 UPBUT SW7 DNBUT 4 U4 2 2 2 2 2 2 2
13 Z1 12 OSC2 11 DOWN L 10 5th 4th REFA 5V UP 6 5th R
0 0 0 0 0 0 0
1 5V C5 0.1uF
0
R3 2
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5V
5V
R5 220K 1 2 Rosc 1 * C4 1 2
0
SCLK 4th
2OSC1 1 OSC 2 SDIO 3 SCLK 4 R8 Q1 1 2 E B 3 C 2N3906 0 2 1
A2625/A2624 U3 OSC_IN OSC_OUT SDIO REFA VDD GND 8 7
0
OSC2 1
0.1uF R6 2 OSC * MAX=2.2K
0
DOWN 1
SCLK LED_CNTL A2610 5V
5LED_CNTL
R7 * 5V 1 68
D1 12 LLED
1 R9 1k
2
LED_CNTL
VCC Z1 Z2 Zaxis
NC1 NC
100k 2
5
2
5V 1 Z1 2 Z2 3
0
2 2 5V L 1 R18 * 1 R19 * 2 2 5V
M
1 R10 * 1 R11 *
2 2
5V R
0
1 R14 * 1 R15 *
0
0
4th
1 R13 *
2
0
5th
1 R17 *
2
0
UP
1 R21 *
2
0
DOWN R23 1 *
2
0
Figure 5:
Typical Application Circuit 3
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Turbo 3D USB+PS/2 optical mouse controller
9. Version History
Version name A2624/A2625_datasheet_V0.2 A2624/A2625_datasheet_V0.3 Details Preliminary version Modifiable error in SCH page, page 12,13,14
10. Package Information
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Turbo 3D USB+PS/2 optical mouse controller
11NOTICE: 1. The information here contained could be changed without notice owing to product and/or technical improvements. Please make sure before using the product that the information you are referring to is up-to-date. 2. No responsibilities are assumed by us for any consequence resulting from any wrong or improper operation, etc. of the product.
Apexone Microelectronics
www..com Shanghai headquarter Building 18.115 Lane 572 BiBo Road, Zhang Jiang High-Tech Park Shanghai, P. R. China 201203 Tel: 0086-21-50809600 Fax: 0086-21-50800992
Shenzhen office Room 405,Tianan Hi-Tech Venture Park Tower A Tianan Cyber Park Futian District Shenzhen P. R. China 518040 Tel: 0086-755-82049216, 82049220, 82049221, 82049276, 82049296, Fax: 0086-755-82049219 American office 9645 Scranton Road Suite 210 San Diego, CA 92121, USA Tel: 001-858-455-4981 Fax: 001-858-455-4984 Email: support@apexonemicro.com Copyright (c) 2005 by Apexone Microelectronics The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Apexone assumes no responsibility arising from the using of the specification described. The applications mentioned herein are used solely for the purpose of illustration and Apexone makes no warranty or representation that such application will be suitable without further modification, nor recommends the use of its product for application that may present a risk to human life due to malfunction or otherwise. Apexone reserves the right to alter its product without prior notification. For the most up-to-date information, please visit our web site at http://www.apexonemicro.com.
Revision Version: 0.2 Revision Date: 26 June, 2006 Confidential 16/16

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