Xilinx MIcroblaze Development Spartan-3E 1600E - Manual (Page 62)

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
1 2 3 4 5
6 7 8 9
GND
1 2 3 4 5
6 7 8 9
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