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
58EVM.DSN
1.2
2
11
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/2
/POR
MODA
MODB
MODC
Vcc/2
/POR
/IRQA
/IRQB
EX
TAL
XTA
L
12.288MHZ
MODA
MODB
MODC
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
JG3
1
2
3
Y1
4.00MHz
R67
10K
R66
10K
U20
DS1818
2
1
3
Vcc
RST
GND
C23
0.1uF
C24
0.1uF
C25
0.1uF
JG4
1
2
3
R68
10K
DNP
R69
470K
R70
470K
R74
470K
S4
6
4
2
5
3
1
R73
10K
R72
10K
R71
10K
R91
10K
R92
10K
R8
10M
S1
S3
S2
56858EVM Schematics, Rev. 3
Freescale Semiconductor
Appendix A-3
Figure
A-2. Reset, Clock,
Boot Mode & IRQs
Содержание 56858
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