Spartan-3A/3AN FPGA Starter Kit Board User Guide
www.xilinx.com
63
UG334 (v1.1) June 19, 2008
R
Chapter 7
RS-232 Serial Ports
Overview
As shown in
Figure 7-1
, the Spartan
®
-3A/3AN FPGA Starter Kit board has two RS-232
serial ports: a female DB9 DCE connector and a male DB9 DTE connector. The DCE-style
port connects directly to the serial port connector available on most personal computers
and workstations via a standard straight-through serial cable. For typical applications, the
board does not require null modem cables, gender changers, or crossover cables.
Use the DTE-style connector to control other RS-232 peripherals, such as modems or
printers, or perform simple loopback testing with the DCE connector.
Figure 7-1:
RS-232 Serial Ports
DTE
DCE
FPGA
DCE
Female DB9
1
2
3
4
5
6
7
8
9
GND
1
2
3
4
5
6
7
8
9
GND
RS232_DTE_RXD
RS232_DTE_TXD
RS232_DCE_TXD
RS232_DCE_RXD
DTE
Male DB9
RS-232 Voltage Translator (IC3)
J36
J27
(F15)
(E16)
(E15)
(F16)
UG334_c7_01_052407
Standard
9-pin serial cable
RS CS TR RD TD CD
TALK/DATA
TALK
RS-232 Peripheral
Standard
9-pin serial cable
Computer
Содержание Spartan-3A DSP FPGA Series
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