Digilent 410-044-10P-KIT Manual de usuario descargar pdf (Pagina 47)

Spartan-3 Starter Kit Board User Guide www.xilinx.com 47

UG130 (v1.1) May 13, 2005 1-800-255-7778

Chapter 13

Expansion Connectors and Boards

Expansion Connectors

The Spartan-3 Starter Kit board has three 40-pin expansion connectors labeled A1, A2, and

B1. The A1 and A2 connectors, indicated as and , respectively, in Figure 1-2, are on

the top edge of the board. Connector A1 is on the top left, and A2 is on the top right. The B1

connector, indicated as in Figure 1-2, is along the right edge of the board.

Table 13-1 summarizes the capabilities of each expansion port. Port A1 supports a

maximum of 32 user I/O pins, while the other ports provide up to 34 user I/O pins. Some

pins are shared with other functions on the board, which may reduce the effective I/O

count for specific applications. For example, pins on the A1 port are shared with the SRAM

address signals, with the SRAM OE# and WE# control signals, and with the eight least-

significant data signals to SRAM IC10 only.

Figure 13-1:

Spartan-3 Starter Kit Board Expansion Connectors

21 20

A2 Expansion ConnectorA1 Expansion Connector

B1 Expansion Connector

21 20

UG130_c12_01_042704

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 63 64

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Digilent 410-044-10P-KIT Manual de usuario Pagina 47