AMD

8

Am7996

07506E-6

Notes:

1.

2.

D2 can be eliminated in Cheapernet (IEEE 802.3, 10BASE2) applications.

3.

Shown with SQE Test disabled.

4.

Discrete Power Supply or Hybrid-Hybrid DC-DC Converter Manufacturers include:

Ethernet (IEEE 802.3, 10BASE5)

Reliability: 2E12R9

Valor Electronics: PM1001

Cheapernet (IEEE 802.3, 10BASE2)

Reliability Inc: 2VP5U9

Valor Electronics: PM7102

5.

The capacitance of C3, Am7996 package, D3 and the printed circuit board should add up to 180 pF

± 20%.

6.

The capacitance of C1, Am7996 package and the printed circuit board should add up to 39 pF.

7.

R9, R10 and C4 are for Receive Mode Collision detection only.

COLL

RCV

XMT

1:1

1:1

1:1

Power (DTE)

(Note 3)

2

3

4

5

GND

–9 V

6

7

8

9

10

R1

40.2

Ω

1%

R3

174

Ω

9.09

Ω

1%

(Note 5)

1N4001

C3

180 pF

R10

150 k

Ω

1%

(Note 1)

R9

499

Ω

1%

C4 0.1

µF

(Note 7)

9.09

Ω

1%

1N4150

D2

D1

CC

R6

24.9 k

Ω

1%

CL

(Note 6)

C1

39 pF

C2

0.1

µF

1%

1%

R4

1.1 k

Ω

Coax

Connector

1

20

19

18

17

16

15

14

13

12

11

MAU Power Supply

(Note 4)

R2

40.2

Ω

1%

1%

R7

(75

µH)

PE64102/PE64107 (or equivalent)

VCC1

CI+

CI–

DI+

DI–

VCREF

SQE^TEST

DO+

DO–

VEE

COLL OSC

VCC2

VCOL

NC

RXT

Tap

Shield

VTX–

TXT

VTX+

NC

R5

75 k

Ω

(Note 1)

D3

(Note 2)

Am7996

Figure 3. Am7996 External Component Diagram with Collision Threshold Modified

for Receive Mode Collision Detect