參數(shù)資料
型號： MC8641DHX1500NC
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： MICROPROCESSOR, CBGA1023
封裝： 33 X 33 MM, ROHS COMPLIANT, CERAMIC, BGA-1023
文件頁數(shù)： 66/140頁
文件大?。?/td> 1484K
代理商： MC8641DHX1500NC
MPC8641 and MPC8641D Integrated Host Processor Hardware Specifications, Rev. 0
Freescale Semiconductor
31
Ethernet: Enhanced Three-Speed Ethernet (eTSEC), MII Management
Timing diagrams for FIFO appear in Figure 8 and Figure 9.
.
Figure 8. FIFO Transmit AC Timing Diagram
FIFO data TXD[7:0], TX_ER, TX_EN setup time to
GTX_CLK
tFITDV
2.0
——ns
GTX_CLK to FIFO data TXD[7:0], TX_ER, TX_EN
hold time
tFITDX
0.5
—
3.0
ns
Table 27. FIFO Mode Receive AC Timing Specification
At recommended operating conditions with L/TVDD of 3.3 V ± 5% and 2.5 V ± 5%.
Parameter/Condition
Symbol
Min
Typ
Max
Unit
RX_CLK clock period (GMII mode)
tFIR
1
±100 ppm tolerance on RX_CLK frequency
7.0
8.0
100
ns
RX_CLK clock period (Encoded mode)
tFIR
5.3
8.0
100
ns
RX_CLK duty cycle
tFIRH/tFIR
45
50
55
%
RX_CLK peak-to-peak jitter
tFIRJ
——
250
ps
Rise time RX_CLK (20%–80%)
tFIRR
—
0.75
ns
Fall time RX_CLK (80%–20%)
tFIRF
—
0.75
ns
RXD[7:0], RX_DV, RX_ER setup time to RX_CLK
tFIRDV
1.5
——ns
RXD[7:0], RX_DV, RX_ER hold time to RX_CLK
tFIRDX
0.5
——ns
Table 26. FIFO Mode Transmit AC Timing Specification (continued)
At recommended operating conditions with L/TVDD of 3.3 V ± 5% and 2.5 V ± 5%.
Parameter/Condition
Symbol
Min
Typ
Max
Unit
tFIT
tFITH
tFITF
tFITDX
TXD[7:0]
TX_EN
GTX_CLK
TX_ER
tFITDV
tFITR
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