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LXT9883/9863 — Advanced 10/100 Unmanaged Repeater

Datasheet

Document #: 249115

Revision #: 003

Rev. Date: 08/07/01

Figure 20. 100BASE-TX TP-to-MII Timing

Table 29. 100BASE-TX TP-to-MII Timing Parameters

Parameter

Sym

Min

Typ

Max

Units

Test Conditions

TPIP/N in to CRS asserted

t3A

––

–

TPIP/N quiet to CRS de-asserted

t3B

––

–

CRS asserted to RXD, RX_DV,

RX_ER

t3C

–

4BT

–

CRS de-asserted to RXD, RX_DV,

RX_ER de-asserted

t3D

––

3BT

–

RX_CLK falling edge to RXD,

RX_DV, RX_ER valid

t3E

––

–

TPIP/N in to COL asserted

t3F

––

–

TPIP/N quiet to COL de-asserted

t3G

––

–

1. Typical values are at 25 °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 MAC and is the reciprocal of bit rate. BT for

100BASE-T = 10

-8 s or 10ns.

RX_CLK

RXD,

RX_DV,

RX_ER

CRS

TPIP/N

COL

t3A

t3B

t3C

t3D

t3F

t3G

t3E

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