ThunderLAN

™ TNETE110

PCI ETHERNET

™ CONTROLLER

SINGLE-CHIP 10 BASE-T

SPWS018B – MARCH 1995 - REVISED MAY 1996

14

POST OFFICE BOX 1443

electrical characteristics over recommended ranges of supply voltage (unless otherwise noted)

(physical layer pins) (continued)

AUI receiver input (ARCVP, ARCVN, ACOLP, ACOLN)

PARAMETER

JEDEC SYMBOL

TEST CONDITIONS

MIN

MAX

UNIT

V(SQ)

Input squelch threshold

To activate

See Note 12,

20 ns < X < 35 ns

– 325

– 100

mV

V(SQ)

Input squelch threshold

Not to activate

– 100

0

mV

NOTES: 12. This parameter is a range that is allowed to vary over operating conditions. The reference point for the timing period is from the input

pair reaching –175 mV on the falling edge to reaching –175 mV on the rising edge.

AUI transmitter drive characteristics (AXMTP, AXMTN)

PARAMETER

JEDEC SYMBOL

TEST CONDITIONS

MIN

MAX

UNIT

VO(DIFF)1

Differential output voltage

VOD(1)

See Note 13

"500 "1315

mV

VOI(DIFF)

Output idle differential voltage

VOD(IDLE)

"40†

mV

VOI(DIFF)U

Output differential undershoot

VOD(IDLE)U

100‡

mV

IO(FC)

Output current, fault condition

IO(FC)

150‡

mA

† Assured by design

‡ Characterized but not tested

NOTE 13: The differential voltage is measured as per Figure 3(b) on page 16.

phase-locked loop (PLL) characteristics

PARAMETER

TEST CONDITIONS

MIN

MAX

UNIT

VFILT Reference PLL operating filter voltage

tc(FXTL1) = 50 ns

0.8

2

V

crystal oscillator characteristics

PARAMETER

JEDEC SYMBOL

TEST CONDITIONS

MIN

MAX

UNIT

VSB(FXTL1) Input self-bias voltage

VIB

1.8

4

V

IOH(FXTL2)

High-level output current

IOH

V(FXTL2) = VSB(FXTL1)

V(FXTL1) = VSB(FXTL1) + 0.5 V

– 2.5

– 6.5

mA

IOL(FXTL2)

Low-level output current

IOL

V(FXTL2) = VSB(FXTL1)

V(FXTL1) = VSB(FXTL1) – 0.5 V

0.4

1.3

mA