TNETE211

ThunderLAN

™ TO IEEE 802.12 PHYSICAL MEDIA DEPENDENT INTERFACE FOR

100VG-AnyLAN

SPWS019 – MAY 1995

12

POST OFFICE BOX 655303

POST OFFICE BOX 1443

TDATA timing requirements (see Figure 7)

PARAMETER

MIN

MAX

UNIT

td(CLK-PTXENL)

Delay time, CLK to PTXEN low

>0

15

ns

td(CLK-PTXENH)

Delay time, CLK to PTXEN high

>0

15

ns

td(CLK-PTXDV)

Delay time, CLK to PTXD valid

>0

15

ns

td(CLK-PTXDV)

CLK

PTXEN

PTXD[0–3]

td(CLK-PTXENH)

td(CLK-PTXENL)

Figure 7. Transmit Data Timing

PRLS timing requirements (see Figure 8)

PARAMETER

MIN

MAX

UNIT

td(CLK-PRLSRENL)

Delay time, CLK to PRLSREN low

>0

15

ns

td(CLK-PRLSRENH)

Delay time, CLK to PRLSREN high

>0

15

ns

tsu(PRLSV-CLK)

Setup time, PRLS valid to rising edge of CLK

10

ns

th(CLK-PRLSX)

Hold time, CLK to PRLS changing

>0

ns

CLK

PRLSREN

PRLS[0–3]

tsu(PRLSV-CLK)

td(CLK-PRLSRENL)

th(CLK-PRLSX)

td(CLK-PRLSRENH)

Figure 8. PRLS Timing