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| Multimedia ICs PS / 2 Mouse Controller BU9206 The BU9206 is a PS / 2 mouse communication controller for PCs. This processor shapes waveforms and counts signals from the mouse rotary encoder as the mouse is moved, to provide two-way communication between mouse and PC system. *Applications PC mouse *Features/ 2 mouse. 1) For PS 2) Compatible with a wide range of input signals, because it automatically sets the input threshold levels for the X and Y direction, corresponding to the output level of the rotary encoder inside the mouse. 3) CMOS process enables low current consumption. *Absolute maximum ratings (Ta = 25C) Parameter Power supply voltage Power dissipation Operating temperature Storage temperature Input voltage Output voltage Symbol VDD Pd Topr Tstg VIN VOUT Limits - 0.3 ~ + 7.0 1000 - 25 ~ + 75 - 55 ~ + 125 - 0.3 ~ VDD + 0.3 - 0.3 ~ VDD + 0.3 Unit V mW C C V V Reduced by 10 mW for each increase in Ta of 1C over 25C. *Recommended operating conditions (Ta = 25C) Parameter Power supply voltage H input voltage 1 H input voltage 2 L input voltage 1 L input voltage 2 XY input H voltage XY input L voltage Symbol VDD VIH1 VIH2 VIL1 VIL2 VAUP VALP Min. 4.5 0.8VDD 0.4VDD 0 0 0.3VDD 0 Typ. 5.0 -- -- -- -- -- -- Max. 5.5 VDD VDD 0.2VDD 0.16VDD 0.8VDD 0.48VAUP Unit V V V V V V V VDD SWR, SWL, TEST2B, TEST1B, TEST0, RESETB SCLK, SDATA SWR, SWL, TEST2B, TEST1B, TEST0, RESETB SCLK, SDATA XA, XB, YA, YB XA, XB, YA, YB Application pin 1 Multimedia ICs BU9206 *Block diagram SWR 1 Noise cancel Data decoder Latch Data shifter for input 16 VDD SWL 2 Noise cancel Latch Data shifter for output 15 SDATA Peak det. Data encoder 14 RESETB XA 3 Comp. Scaling and turbo Accumlator Sample timing XB 4 Comp. Regi. 13 OSC1 Peak det. Clk gen. YA 5 Comp. Osc 12 OSC2 Accumlator YB 6 Comp. Regi. 11 TEST0 SCLK 7 SCLK gen. I / O inhibit 10 TEST1B VSS 8 9 TEST2B 2 Multimedia ICs BU9206 *Pin descriptions Pin No. Pin name I/O Function Right switch input Pull-up resistor built in Low active SWR SWL I / O format 1 SWR IN Typ.38k 2 SWL IN Left switch input Pull-up resistor built in Low active 3 4 5 6 XA XB YA YB IN IN IN IN Rotary encoder X-direction, A-phase input Rotary encoder X-direction, B-phase input Rotary encoder Y-direction, A-phase input Vref XA XB YA YB + - COMP Rotary encoder Y-direction, B-phase input Typ.5k 7 SCLK I/O Serial clock input / output Pull-up resistor built in Open drain output 8 VSS -- Input / output reference voltage: 0V Tip test input Pull-up resistor built in Low active TEST1B TEST2B -- 9 TEST2B IN Typ.11k 10 TEST1B IN Normally open or connected to VDD Typ.38k 11 TEST0 IN Pull-up resistor built in Normally connected to GND TURBO 3 Multimedia ICs BU9206 Pin No. Pin name I/O Function I / O format 12 OSC2 IN Pin to connect oscillator for clock Connect a 4MHz oscillator between OSC1 and OSC2. OSC2 OSC1 13 OSC1 OUT 14 RESETB IN Reset input Pull-up resistor built in Low active Typ.38k RESETB Typ.5k 15 SDATA I/O Serial data input / output Pull-up resistor built in Open drain output SDATA 16 VDD -- Power supply pin Connect a 4.5 - 5.5V power supply. -- 4 Multimedia ICs BU9206 *Electrical characteristics (unless otherwise noted, Ta = 25C, VDD = 5.0V) Parameter Supply current Output low level voltage 1 Input low level current 1 Input low level current 2 Input low level current 3 Input low level current 4 Input high level current 1 Input high level current 2 Input high level current 3 Input high level current 4 OSC2 input current Oscillation frequency Symbol IDD VOL1 IIL1 IIL2 IIL3 IIL4 IIH1 IIH2 IIH3 IIH4 IOSC fOSC Min. 0.5 -- 98 330 0.75 -- -- -- -- -- -- -- Typ. 2.1 0.43 130 440 1.0 -- -- -- -- -- 6 4.0 Max. 4.0 0.6 195 660 1.5 10 10 10 10 10 20 -- Unit mA V A A mA A A A A A A MHz Conditions fCK = 4.0MHz ISINK = 4.0mA VIN = VSS VIN = VSS VIN = VSS VIN = VSS VIN = VDD VIN = VDD VIN = VDD VIN = VDD VDD SCLK, SDATA SWR, SWL, TEST0, RESETB TEST1B, TEST2B SCLK, SDATA XA, XB, YA, YB SWR, SWL, TEST0, RESETB TEST1B, TEST2B SCLK, SDATA XA, XB, YA, YB Applied pin VIN = GND or VDD OSC2 OSC1 *Application circuit 1 SWR VDD 16 VDD 2 SWL SDATA 15 SDATA VSS SCLK 3 XA RESETB 14 4 XB OSC1 13 5 YA OSC2 12 6 YB TEST0 11 7 SCLK TEST1B 10 8 VSS TEST2B 9 Fig. 1 5 Multimedia ICs BU9206 *External dimensions (Units: mm) 19.4 0.3 16 9 6.5 0.3 1 0.51Min. 3.2 0.2 4.25 0.3 8 7.62 0.3 0.1 2.54 0.5 0.1 0 ~ 15 DIP16 6 |
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