RAM 4.5 BUX II Series Manual de usuario descargar pdf (Pagina 42)

DE1 User Manual

4.9 PS/2 Serial Port

The DE1 board includes a standard PS/2 interface and a connector for a PS/2 keyboard or mouse.

Figure 4.17 shows the schematic of the PS/2 circuit. Instructions for using a PS/2 mouse or

keyboard can be found by performing an appropriate search on various educational web sites. The

pin assignments for the associated interface are shown in Table 4.11.

Figure 4.17. PS/2 schematic.

Signal Name FPGA Pin No. Description

PS2_CLK PIN_H15 PS/2 Clock

PS2_DAT PIN_J14 PS/2 Data

Table 4.11. PS/2 pin assignments.

4.10 Using SDRAM/SRAM/Flash

The DE1 board provides an 8-Mbyte SDRAM, 512-Kbyte SRAM, and 4-Mbyte (1-Mbyte on some

boards) Flash memory. Figures 4.23, 4.24, and 4.25 show the schematics of the memory chips. The

pin assignments for each device are listed in Tables 4.16, 4.17, and 4.18. The datasheets for the

memory chips are provided in the Datasheet folder on the DE1 System CD-ROM.

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RAM 4.5 BUX II Series Manual de usuario Pagina 42