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IXF1104 4-Port Gigabit Ethernet Media Access Controller
143 Datasheet
Document Number: 278757
Revision Number: 009
Revision Date: 27-Oct-2005
7.4.1.2 1000BASE-T Receive Interface
Figure 39. 1000BASE-T Receive Interface Timing
Table 50. GMII 1000BASE-T Receive Signal Parameters
Symbol Parameter Min Typ
1
Max Unit
2
t1 RXD[7:0], RX_DV, RXER Setup to Rx_CLK High 2.0 – – ns
t2 RXD[7:0], RX_DV, RXER Hold after Rx_CLK High 0.0 – – ns
1. Typical values are at 25
o
C and are for design aid only; not guaranteed and not subject to production
testing.
2. Bit Time (BT) is the duration of one bit as transferred to/from the PHY and is the reciprocal of bit rate. BT for
1000BASE-T = 10
-9
or 1 ns.
RxDV
RXD[7:0]
CRS
t1
t2
RX_CLK