TNETX3150GGP datasheet(104/113 Pages) TI1

104 / 113 page

TNETX3150/TNETX3150A

ThunderSWITCH™ 15-PORT 10-/100-MBIT/S ETHERNET™ SWITCH

SPWS027F – FEBRUARY 1997 – REVISED SEPTEMBER 1997

104

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

operating characteristics over recommended operating conditions (see Figure 45)

MII transmit 100/200 Mbit/s (XX = ports 00–02)

PARAMETER

TNETX3150

TNETX3150A

UNIT

NO.

PARAMETER

MIN

MAX

MIN

MAX

UNIT

td(MXXTXD)1

Delay time, from MXXTCLK

↑ to MXXTXD3–MXXTXD0 valid

2.5

1†

td(MXXTXD)2

Delay time, from MXXTCLK

↑ to MXXTXD7–MXXTXD0 valid

2.5

td(MXXTXEN)

Delay time, from MXXTCLK

↑ to MXXTXEN valid

2.5

td(MXXTXER)

Delay time, from MXXTCLK

↑ to MXXTXER valid

2.5

† Also applies to the uplink (port 00) when operating in the 200 Mbit/s mode, except that MXXRXD3–MXXRXD0 is replaced with

MXXRXD7–MXXRXD0 and MXXRXDVX is used.

MXXTXD3–MXXTXD0 is driven by the reconciliation sublayer synchronous to the MXXTCLK. MXXTXEN is

asserted and deasserted by the reconciliation sublayer synchronous to the MXXTCLK rising edge. MXXTXER

is driven synchronous to the rising edge of MXXTCLK (XX = ports 00–02).

MXXTCLK

(input)

MXXTXD7–MXXTXD0

MXXTXD3–MXXTXD0

MXXTXEN

MXXTXER (outputs)

Figure 45. Ports (00–02) Transmit Interface Timing

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