MSC7116_08 Motorola Semiconductor Products, MSC7116_08 Datasheet - Page 43
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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3.2.2.1
The power-up sequence is as follows:
The power-down sequence is as follows:
Use the following guidelines:
Freescale Semiconductor
1.
2.
3.
4.
1.
2.
3.
4.
•
•
•
Turn on the V
Turn on the V
Turn on the V
Turn on the V
Turn off the V
Turn off the V
Turn off the V
Turn of the V
Make sure that the time interval between the ramp-down of V
Make sure that the time interval between the ramp-up or ramp-down for V
power-up and power-down.
Refer to Figure 30 for relative timing for power sequencing case 1.
Case 1
<10 ms
Ramp-up
DDIO
DDIO
DDC
DDM
REF
REF
DDM
DDC
<10 ms
(1.25 V) supply fourth (last).
(1.25 V) supply first.
(1.2 V) supply second.
(1.2 V) supply third.
(3.3 V) supply fourth (last).
(2.5 V) supply third.
(3.3 V) supply first.
(2.5 V) supply second.
Figure 30. Voltage Sequencing Case 1
MSC7116 Data Sheet, Rev. 13
Time
DDIO
<10 ms
and V
Ramp-down
DDC
<10 ms
DDC
is less than 10 ms.
and V
Hardware Design Considerations
DDM
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
43
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