dsp56001a Freescale Semiconductor, Inc, dsp56001a Datasheet - Page 88

• Manufacturer Part Number: dsp56001a
• Description: 24-bit Digital Signal Processor
• Manufacturer: Freescale Semiconductor, Inc

DSP56001A
Application Examples
Figure 4-5 shows a circuit that waits until V
a 75,000 T
required for an external oscillator). This insures that the DSP is operational and stable before
releasing the reset signal.
4-14
Note:
Reset
Logic
2 (2)
1. IRQA, and IRQB must be driven to the logic levels appropriate for the application.
2. MODA and MODB must be driven to the logic levels appropriate for the application.
C
1.2 V
oscillator stabilization delay required for the on-chip oscillator (only 25 T
3 (4)
MC34064
MC33064
REF
+
–
Figure 4-5 Reset Circuit Using MC34064/MC33064
Freescale Semiconductor, Inc.
U1
For More Information On This Product,
DSP56001A/D, Rev. 1
Go to: www.freescale.com
CC
1 (1)
on the DSP56001A is at least 4.5 V before initiating
Where:
t
V
R = 8.2 K
f
DLY
OSC
IN
= 5 V
= 75,000 T
= 20 MHz
t
DLY
+5V
= RC
5%
R
C
DLY
DLY
C
minimum
In
1 -
RESET
V
V
V
C
TC = 50 ns
1
V
IN
TH
OL
DLY
TH
- V
= 2.5 V
= 0.4 V
= 1 mf
OL
MOTOROLA
C
AA0908
20%
is