Freescale Semiconductor 56852, User Manual

Page: 41 / 60

A A
B B
C C
D D
E E
4
4
3
3
2
2
1
1
IRQA PUSHBUTTON
OSC BYPASS
IRQB PUSHBUTTON
RESET PUSHBUTTON
12
3
DS1818
Boot MODE Select
DSPD Design
RESET, CLOCK, BOOT MODE &
IRQS
DSP568
52EVM.DSN
1.4
2
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
VCC/3
/POR
MODA MODB MODC
D13 D14 D15
VCC/2
/POR
/IRQA
/IRQB
EX
TAL
XTA
L
D13 D14 D15
12.288MHZ
+3.3V +3.3V
+3.3V
+3.3V
+3.3V
+3.3V
JG4
1
2
3
Y1
4.00MHz
R71
10K R70 10K
U16 DS1818
2
1
3
Vcc
RST
GND
C30 0.1uF C31 0.1uF
C32 0.1uF
JG3
1
2
3
R45 10K DNP
S5
6 4 2
5 3 1
R80 10K R81 10K R82 10K
R86
470K
R43
470K
R41
470K
R79 10K R85 10K
R16 10M
S3
S1 S2
DSP56852EVM Schematics, Rev. 3
Freescale Semiconductor
Appendix A-
3
Figure
A-2. Reset, Clock,
Boot Mode & IRQs