ThunderLAN

™ TNETE110

PCI ETHERNET

™ CONTROLLER

SINGLE-CHIP 10 BASE-T

SPWS018B – MARCH 1995 - REVISED MAY 1996

16

POST OFFICE BOX 1443

(c) FIREF TEST CIRCUIT

(b) AXMTP AND AXMTN TEST LOAD (AC TESTING)

X1 – Fil – Mag 23Z90 (1:1)

(a) TTL OUTPUT TEST LOAD

180

Ω

FIREF

AXMTN

AXMTP

78

Ω

Point

Test

CL

IOH

VLOAD

IOL

Point

Test

Test

Under

Output

TTL

50

Ω

FXMTN

FXMTP

X1

50

Ω

50

Ω

Point

Test

50

Ω

X2

50

Ω

50

Ω

25

Ω

25

Ω

FXMTN

FXMTP

Point

Test

50

Ω

50

Ω

50

Ω

50

Ω

Point

Test

(e) FXMTP AND FXMTN TEST LOAD (DC TESTING)

(d) FXMTP AND FXMTN TEST LOAD (AC TESTING)

X2 – Fil – Mag 23Z128 (1:

√2)

Where: IOL

= Refer to IOL in recommended operating conditions

IOH

= Refer to IOH in recommended operating conditions

VLOAD

= 1.5 V, typical dc-level verification or

0.7 V, typical timing verification

CL

= 18 pF, typical load-circuit capacitance

Figure 3. Test and Load Circuit

switching characteristics of PCI 5 V and 3.3 V (see Note 14 and Figure 4)

PARAMETER

MIN

MAX

UNIT

tVAL

Delay time, PCLK to bused signals valid (see Notes 15 and 16)

2

11

ns