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SPEAR600 bảng dữ liệu(PDF) 80 Page - STMicroelectronics

tên linh kiện SPEAR600
Giải thích chi tiết về linh kiện  Embedded MPU with dual ARM926 core, flexible memory support, powerful connectivity features and programmable LCD interface
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SPEAR600 bảng dữ liệu(HTML) 80 Page - STMicroelectronics

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Timing characteristics
SPEAr600
80/97
Doc ID 16259 Rev 3
Note:
Values in Table 49 are referred to the common internal source clock which has a period of
THCLK = 6 ns.
6.6
Ether MAC 10/100/1000 Mbps (GMAC-Univ) timing
characteristics
The characterization timing is given for an output load of 5 pF on the GMII TX clock and 10
pF on the other pads. The operating conditions are in worst case V=0.90 V, T=125 ° C and
in best case V=1.10 V, T= 40 ° C.
6.6.1
GMII Transmit timing specifications
Figure 33.
GMII TX waveforms
Figure 34.
Block diagram of GMII TX pins
Table 50.
GMII TX timing
Parameter
Value using GMII [tCLK period = 8 ns 125 MHz]
trise (tr)
<1 ns
tfall (tf)
<1 ns
tmax= t2max- t3min
2.8 ns
tmin= t2min- t3max
0.4 ns
tSETUP
5.19 ns
Tmin
Tmax
GMIITX_CLK
TXD0-TXD3,
GMIITX_D4-GMIITX_D7,
TXEN, TXER
Tclock
Tr
Tf
Q
Q
SET
CLR
D
t2
t3
GMII_TXCLK
TX[0..3], GMII_TX[4..7],
TXEN, TXER
CLK
TX[0..3], GMII_TX[4..7],
TXEN, TXER



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