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MicroBlaze Development Kit Spartan-3E 1600 Edition User Guide 67
UG257 (v1.1) December 5, 2007 www.xilinx.com
Voltage Supply
R
the X or Y values exceed their maximum value, an overflow condition. A ‘1’ indicates
when an overflow occurs. If the mouse moves continuously, the 33-bit transmissions repeat
every 50 ms or so.
The L and R fields in the status byte indicate Left and Right button presses. A ‘1’ indicates
that the associated mouse button is being pressed.
Voltage Supply
The PS/2 port on the MicroBlaze Development Kit board is powered by 5V. Although the
Spartan-3E FPGA is not a 5V-tolerant device, it can communicate with a 5V device using
series current-limiting resistors, as shown in Figure 8-1.
UCF Location Constraints
Figure 8-6 provides the UCF constraints for the PS/2 port connecting, including the I/O
pin assignment and the I/O standard used.
Related Resources
x PS/2 Mouse/Keyboard Protocol
http://www.computer-engineering.org/ps2protocol/
x PS/2 Keyboard Interface
http://www.computer-engineering.org/ps2keyboard/
x PS/2 Mouse Interface
http://www.computer-engineering.org/ps2mouse/
Figure 8-6: UCF Location Constraints for PS/2 Port
NET "PS2_CLK" LOC = "G14" | IOSTANDARD = LVCMOS33 | DRIVE = 8 | SLEW = SLOW ;
NET "PS2_DATA" LOC = "G13" | IOSTANDARD = LVCMOS33 | DRIVE = 8 | SLEW = SLOW ;
U257_08_06_060506
- MicroBlaze Development 1
- Kit Spartan-3E 1600E 1
- Edition User Guide 1
- Revision History 2
- Table of Contents 3
- Chapter 6: VGA Display Port 4
- Chapter 12: SPI Serial Flash 5
- Chapter 13: DDR SDRAM 6
- Appendix A: Schematics 7
- About This Guide 9
- Additional Resources 10
- Introduction and Overview 11
- Key Components and Features 12
- Design Trade-Offs 13
- UG257_02_01_061306 15
- Push-Button Switches 16
- Rotary Push-Button Switch 17
- Rotary Shaft Encoder 18
- Discrete LEDs 19
- Clock Sources 21
- ±2500 Hz or ±50 ppm 22
- Chapter 3: Clock Sources 24
- FPGA Configuration Options 25
- Spartan-3E 26
- Development Board 26
- Configuration Mode Jumpers 27
- PROG Push Button 28
- DONE Pin LED 28
- Connecting the USB Cable 29
- UG257_04_05_061206 30
- UG257_04_06_0612 30
- UG257 04-07 06906 31
- UG257_04_08_061206 31
- UG257_09_061206 32
- UG257_04_10_061206 33
- UG257_04_11_061206 33
- Generating the PROM File 34
- UG257_04_12_022706 34
- UG257_04_13_061206 34
- UG257_04_14_061206 35
- UG257_04_15_061206 35
- UG257_4-16_061206 36
- UG257_4-17_061206 36
- UG257_4-18_060906 37
- UG257_4-19_061206 38
- UG257_4-20_061206 38
- UG257 4 21 061206 39
- UG257_04_22_061206 39
- UG257_4-23_060106 40
- UG257_4-24_061 40
- UG257_04_25_061206 40
- UG257_04_26_061206 41
- Character LCD Screen 43
- Voltage Compatibility 44
- LCD Controller 46
- UG257_05_04_061206 47
- Command Set 48
- Disabled 49
- Clear Display 49
- Return Cursor Home 49
- Entry Mode Set 49
- Display On/Off 50
- Cursor and Display Shift 50
- Function Set 51
- Set CG RAM Address 51
- Set DD RAM Address 51
- Read Busy Flag and Address 51
- Operation 52
- Power-On Initialization 53
- Display Configuration 53
- VGA Display Port 55
- UG257_06_02_06050 57
- VGA Signal Timing 58
- Chapter 6: VGA Display Port 60
- RS-232 Serial Ports 61
- UG257_07_01_060506 62
- PS/2 Mouse/Keyboard Port 65
- Keyboard 66
- Caps L o c k 67
- Back Space 67
- Mouse Arrow 68
- U257_08_06_060506 69
- Chapter 9 71
- Interface Signals 72
- SPI Communication Details 73
- Communication Protocol 73
- DAC Outputs A and B 74
- Analog Capture Circuit 77
- UG257_10_02_060706 78
- Programmable Pre-Amplifier 79
- SPI Control Interface 80
- Interface 81
- UG257_10_08_061406 83
- Chapter 11 85
- StrataFlash Connections 86
- Shared Connections 89
- SPI Serial Flash 93
- Configuring from SPI Flash 94
- UG257_12_04_061506 95
- UG257_12_05_060806 95
- UG257_12_06_060806 96
- UG257_12_07_060806 96
- UG257_12_08_060806 97
- UG257_12_09_060806 97
- UG257_12_10_060806 98
- UG257_12_11_060806 98
- UG257_12-12_062606 99
- UG257_12_1 99
- 3_060806 99
- UG257_12_14_060806 100
- with Flying Leads 101
- UG257_12_15_060806 101
- NO JUMPER 102
- Additional Design Details 103
- °. The 16-pin SOIC 104
- UG257_12_19_060806 105
- Related Resources 106
- DDR SDRAM 107
- DDR SDRAM Connections 108
- UCF Location Constraints 110
- Chapter 13: DDR SDRAM 112
- Chapter 14 113
- Ethernet PHY Connections 114
- UG257_14_03_060806 115
- Expansion Connectors 117
- Hirose 100-pin Expansion 118
- Connector (J3) 118
- Spartan-3E FPGA 118
- Compatible Board 120
- Mating Receptacle Connectors 120
- Differential I/O 120
- Using Differential Inputs 122
- Using Differential Outputs 123
- Six-Pin Accessory Headers 125
- XC2C64A CoolRunner-II CPLD 129
- FPGA Connections to CPLD 131
- DS2432 1-Wire SHA-1 EEPROM 133
- Appendix A 135
- Schematics 135
- UG257_A01_060606 137
- UG257_A02_060606 139
- Appendix A: Schematics 140
- UG257_A03_060606 141
- Voltage Regulators 142
- Flash, JTAG Connections 144
- UG257_A05_060606 145
- UG257_A06_060606 147
- FPGA I/O Banks 2 and 3 148
- Power Supply Decoupling 150
- UG257_A10_060606 155
- UG257_A11_060606 157
- UG257_A12_060606 159
- Termination 160
- UG257_A13_060606 161
- Appendix B 163
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