MSC8144ADS Freescale Semiconductor, MSC8144ADS Datasheet - Page 56

• 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 26
Figure 27
2.6.10.4
Table 43
56
REF_CLK duty cycle
REF_CLK to RMII data TXD[1–0], TX_EN delay
RXD[1–0], CRS_DV, RX_ER setup time to REF_CLK
RXD[1–0], CRS_DV, RX_ER hold time to REF_CLK
Typical REF_CLK clock period (t
Notes:
provides the RMII transmit and receive AC timing specifications.
provides the AC test load.
shows the MII receive AC timing diagram.
1.
2.
Typical REF_CLK clock period (t
Program GCR4 as 0x00001405
RMII Transmit and Receive AC Timing Specifications
RXD[3:0]
RX_CLK
RX_DV
RX_ER
Output
Table 43. RMII Transmit and Receive AC Timing Specifications
MSC8144 Quad Core Digital Signal Processor Data Sheet, Rev. 16
RMX
Parameter/Condition
) is 20 ns
t
MRDVKH
Figure 27. MII Receive AC Timing
RMX
Z
) is 20 ns
0
Figure 26. AC Test Load
= 50 Ω
Valid Data
R
L
t
MRDXKH
= 50 Ω
t
Symbol
RMXH/
t
t
t
RMRDVKH
RMRDXKH
RMTKHDX
V
t
DDGE
RMX
1
/2
Min
4.0
2.0
35
Freescale Semiconductor
2
Max
65
10
—
—
Unit
ns
ns
ns
%