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DP83849IF 데이터시트(PDF) 71 Page - National Semiconductor (TI)

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부품명 DP83849IF
상세설명  PHYTER짰 DUAL Industrial Temperature with Fiber Support (FX) an Flexible Port Switching Dual Port 10/100 Mb/s Ethernet Physical Layer Transceiver
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제조업체  NSC [National Semiconductor (TI)]
홈페이지  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP83849IF 데이터시트(HTML) 71 Page - National Semiconductor (TI)

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5
RMII_MODE
Strap, RW
Reduced MII Mode:
0 = Standard MII Mode
1 = Reduced MII Mode
4
RMII_REV1_0
0, RW
Reduced MII Revision 1.0:
0 = (RMII revision 1.2) CRS_DV will toggle at the end of a packet
to indicate deassertion of CRS.
1 = (RMII revision 1.0) CRS_DV will remain asserted until final data
is transferred. CRS_DV will not toggle at the end of a packet.
3
RX_OVF_STS
0, RO/COR
RX FIFO Over Flow Status:
0 = Normal
1 = Overflow detected
2
RX_UNF_STS
0, RO/COR
RX FIFO Under Flow Status:
0 = Normal
1 = Underflow detected
1:0
ELAST_BUF[1:0]
01, RW
Receive Elasticity Buffer:
This field controls the Receive Elasticity Buffer which allows for fre-
quency variation tolerance between the 50MHz RMII clock and the
recovered data. See Section 3.2 for more information on Elasticity
Buffer settings in RMII mode. See Section 3.4 for more information
on Elasticity Buffer settings in SCMII mode.
Table 36. RMII and Bypass Register (RBR), addresses 17h (Continued)
Bit
Bit Name
Default
Description



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