Freescale Semiconductor 56852, User Manual

Page: 44 / 60

A A
B B
C C
D D
E E
4
4
3
3
2
2
1
1
RS-2
32 ENABLE
1 - 2
N/C
RS-232 ENABLE RS-232 DISABLE
CONNECTOR
CTS DSR DTR RXD TXD RTS DCD
SCI
RS-232
RI
GND
DSPD Design
SCI PORT, RS-232 AND CO
NNECTOR
DSP568
52EVM.DSN
1.4
5
10
Thursday, January 10, 2002
A
DS
P Standard Products Division
2100 East Elliot Road Tempe, Arizona 85284
Tit
le
Docu
ment
Date:
Siz
e
Design
er:
Shee
t
of
Rev.
Numbe
r
(480) 413-5090 FAX: (480) 413-2510
R4IN R5IN R2IN R3IN /EN T2IN
TX
T2IN T3IN /EN
R3IN R4IN R5IN R2IN
RX
T3IN
TXD
RXD
+3.3V
+3.3V
+3.3V
R56
1K
R57
1K
R55
1K
R54
1K
R51
1K
R50
1K
JG8
1 2
R52 1K
T5
1
T6
1
T7
1
T8
1
P6
5 9 4 8 3 7 2 6 1
T3
1
T2
1
T1
1
T4
1
U6
MAX3245EEAI
27
1
26
2
23 28 14 13 12 19 18 17 16 15
8 7 6 5 4 11 10 9
22 24
3 25
20
21
V+
C2+
VCC
C2- FORCEON C1+ T1IN T2IN T3IN R1OUT R2OUT R3OUT R4OUT R5OUT
R5IN R4IN R3IN R2IN R1IN
T3OUT T2OUT T1OUT
FORCEOFF C1-
V-
GND
R2OUTB
INVALID
JG5 1 3
2 4
R53
1K
C27 1.0 uF
C26 1.0 uF C29 1.0 uF
C28 1.0 uF
DSP56852EVM User Manual, Rev. 3
Appendix A-
6 Freescale Semiconductor
Figure
A-5. SCI Port,
RS-232 and Connector