3X38FTR Datasheet, PDF (58/64 Pages) Agere Systems – OCTAL-FET (Fast Ethernet Transceiver) for 10Base-T/100Base-TX/FX

3X38FTR 208-Pin SQFP
OCTAL-FET for 10Base-T/100Base-TX/FX
Preliminary Data Sheet
September 2000
Clock Timing (continued)
Table 41. RMII Receive Timing
Symbol
Parameter
Min
Typ
Max
Unit
t1
RXER, CRS_DV, RXD[1:0] Prop Delay with
2
25 pF Load
—
10
ns
t1
RMCLK
RXER, CRS_DV,
RXD[1:0]
Figure 18. RMII Receive Timing
Table 42. RMII Transmit Timing
Symbol
Parameter
Min
t1
TXEN, TXD[1:0] Setup to REF_CLK Rise
4
t2
TXER, TXEN, TXD[3:0] Hold After TXCLK
2
Rise
Max
—
—
5-6787(F).b.r1
Unit
ns
ns
RMCLK
TXEN,
TXD[1:0]
t1
t2
Figure 19. RMII Transmit Timing
5-6788(F).b.r1
58
Lucent Technologies Inc.