MSC8144ADS Freescale Semiconductor, MSC8144ADS Datasheet - Page 64

• Manufacturer Part Number: MSC8144ADS
• Description: ADS FOR MSC8144 DEVICE
• Manufacturer: Freescale Semiconductor
• Type: DSPr

Specifications of MSC8144ADS

• Contents: AMC Card, Power Supply, Cables, USB TAP, Hardware and Documentation
• For Use With/related Products: MSC8144
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 40
Figure 41
3
The following sections discuss areas to consider when the MSC8144 device is designed into a system.
3.1
3.1.1
Use the following guidelines for power-on sequencing:
External voltage applied to any input line must not exceed the related to this port I/O supply by more than 0.6 V at any time,
including during power-up. Some designs require pull-up voltages applied to selected input lines during power-up for
configuration purposes. This is an acceptable exception to the rule during start-up. However, each such input can draw up to 80
mA per input pin per MSC8144 device in the system during start-up. An assertion of the inputs to the high voltage level before
power-up should be with slew rate less than 4 V/ns.
64
•
•
•
There are no dependencies in power-on/power-off sequence between V
There are no dependencies in power-on/power-off sequence between RapidIO supplies: V
V
V
shows the test access port timing diagram
DDRIOPLL
DDPLL
shows the TRST timing diagram.
(Input)
Hardware Design Considerations
TRST
Start-up Sequencing Recommendations
Power-on Sequence
(Output)
(Output)
(Input)
(Input)
should be coupled with the V
TMS
TDO
TDO
TCK
TDI
and other MSC8144 supplies.
MSC8144 Quad Core Digital Signal Processor Data Sheet, Rev. 16
t
TRST
Figure 40. Test Access Port Timing
t
TDOHOZ
t
TDOHOV
DD
Figure 41. TRST Timing
power rail with extremely low impedance path.
t
Output Data Valid
TDIVKH
Input Data Valid
DDM3
and V
t
TDIXKH
DD
supplies.
DDSXC
Freescale Semiconductor
, V
DDSXP
,