MSC7116_08 Motorola Semiconductor Products, MSC7116_08 Datasheet - Page 46
MSC7116_08
Manufacturer Part Number
MSC7116_08
Description
Low-cost 16-bit DSP with DDR Controller and 10/100 Mbps Ethernet MAC
Manufacturer
Motorola Semiconductor Products
Datasheet
1.MSC7116_08.pdf
(60 pages)
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Hardware Design Considerations
3.2.2.4
The power-up sequence is as follows:
Note:
The power-down sequence is as follows:
Use the following guidelines:
46
1.
2.
1.
2.
•
•
Turn on the V
Turn on the V
Make sure that the time interval between the ramp-up of V
Turn off the V
Turn of the V
Make sure that the time interval between the ramp-up or ramp-down time for V
power-up and power-down.
Refer to Figure 33 for relative timing for Case 4.
Case 4
<10 ms
Ramp-up
DDIO
DDIO
DDC
DDC
(1.2 V), V
(1.2 V), V
(3.3 V) supply last.
(3.3 V) supply first.
DDM
REF
Figure 33. Voltage Sequencing Case 4
(1.25 V), and V
(2.5 V), and V
MSC7116 Data Sheet, Rev. 13
Time
REF
DDM
(1.25 V) supplies simultaneously (second).
(2.5 V) supplies simultaneously (first).
DDIO
and V
DDC
Ramp-down
<10 ms
is less than 10 ms.
DDC
and V
DDM
Freescale Semiconductor
is less than 10 ms for
V
V
V
V
DDIO
DDM
REF
DDC
= 1.25 V
= 1.2 V
= 2.5 V
= 3.3 V
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