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

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part # DP83849IF
Description  PHYTER짰 DUAL Industrial Temperature with Fiber Support (FX) an Flexible Port Switching Dual Port 10/100 Mb/s Ethernet Physical Layer Transceiver
PDF  108 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP83849IF Datasheet(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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