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60 MicroBlaze Development Kit Spartan-3E 1600 Edition User Guide
www.xilinx.com UG257 (v1.1) December 5, 2007
Chapter 7: RS-232 Serial Ports
R
Figure 7-1: RS-232 Serial Ports
DCE
DTE
Spartan-3E FPGA
DTE
Male DB9
12345
6789
GND
12345
6789
GND
RS232_DCE_RXD
RS232_DCE_TXD
RS232_DTE_TXD
RS232_DTE_RXD
DCE
Female DB9
RS-232 Voltage Translator (IC2)
J9 J10
(M13)(U8)(M14)(R7)
Pin 1
Pin 6
Pin 9
Pin 5
DB9 Serial Port Connector
(front view)
RS CS TR RD TD CD
TALK/DATA
TALK
RS-232 Peripheral
Null Modem
Serial cable
To DTE
To DTE
Std 9-Pin
Serial cable
Std 9-Pin
Serial cable
To DCE
OR
UG257_07_01_060506