MSC8144ADS Freescale Semiconductor, MSC8144ADS Datasheet - Page 58
MSC8144ADS
Manufacturer Part Number
MSC8144ADS
Description
ADS FOR MSC8144 DEVICE
Manufacturer
Freescale Semiconductor
Type
DSPr
Datasheet
1.MSC8144VT800B.pdf
(80 pages)
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
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- Download datasheet (2Mb)
2.6.10.6
Table 45
Table 46
58
Data to clock output skew (at transmitter)
Data to clock input skew (at receiver)
Notes:
Data to clock output skew (at transmitter)
Data to clock input skew (at receiver)
Notes:
presents the RGMII AC timing specifications for applications requiring an on-board delayed clock.
1.
2.
3.
presents the RGMII AC timing specification for applications required non-delayed clock on board.
1.
2.
3.
ETHSYNC_IN
ETHRXD
ETHCLOCK
At recommended operating conditions with LV
This implies that PC board design requires clocks to be routed such that an additional trace delay of greater than 1.5 ns is
added to the associated clock signal.
GCR4 should be programmed as 0x00001004.
At recommended operating conditions with LV
This implies that PC board design will require clocks to be routed with no additional trace delay
GCR4 should be programmed as 0x0004C130.
ETHSYNC
ETHTXD
RGMII AC Timing Specifications
Table 46. RGMII with No On-Board Delay AC Timing Specifications
Table 45. RGMII with On-Board Delay AC Timing Specifications
MSC8144 Quad Core Digital Signal Processor Data Sheet, Rev. 16
Parameter/Condition
Parameter/Condition
2
2
t
SMDVKH
Figure 30. SMII Mode Signal Timing
Valid
DD
DD
of 2.5 V +/- 5%.
of 2.5 V +/- 5%.
Valid
t
SMXR
t
SMDXKH
Symbol
Symbol
t
t
t
t
SKEWR
SKEWR
SKEWT
SKEWT
–2.6
–0.5
Min
-0.5
Min
0.9
Valid
Freescale Semiconductor
Typ
Typ
—
—
—
—
Max
Max
–0.9
0.5
2.6
0.5
Unit
Unit
ns
ns
ns
ns
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