UG-400 Datasheet, PDF (17/20 Pages) Analog Devices – Plug and play system evaluation

Hardware User Guide
UG-400
RS-232 CONSOLE
The RS-232 console connector is used for accessing the console
of the uClinux kernel running on the ADSP-BF548 processor. It
uses the ADM3202 RS-232 line driver and receiver to connect
to UART1 of the ADSP-BF548. The RS-232 signals connect to a
DB-9 connector, J4. A circuit implementation of the RS-232
console is shown in Figure 17.
The RS-232 console is used to directly access the uClinux kernel
running on the ADSP-BF548. When the console is connected to
a RS-232 port on the PC, the kernel can be accessed through a
terminal program.
3.3V
3.3V
3.3V
R56
10K
R55
33R
UART1TX
#UART1RTS
UART1RX
#UART1CTS
R57
3.3V
10K
C111
0.01uF
GND
GND
R58
10K
U12
11
10 ^T1IN
T2IN
12
9 ^R1OUT
R2OUT
C112
0.1uF
1
3 ^C1+
C113
C1-
0.1uF
4
5 ^C2+
C2-
ADM3202
14
T1OUT
7
T2OUT
13
R1IN ₈
R2IN
3.3V
2
V+ ₆
V-
C115
0.1uF
GND
C114
0.1uF
GND
GND
Figure 17. RS-232 Console Implementation
J4
1
6
2
7
11
3
8
10
4
9
5
DB9
Rev. 0 | Page 17 of 20