AM79C30AVC datasheet(78/101 Pages) AMD

Part #	AM79C30AVC

Description	Digital Subscriber Controller??(DSC?? Circuit

PDF	101 Pages

Scroll/Zoom	100%

Manufacturer	AMD [Advanced Micro Devices]

Direct Link	http://www.amd.com

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78 / 101 page

Am79C30A/32A Data Sheet

Figure 25.

System Interface to LIU

LOUT2

LOUT1

VLOUT

–

LIN1

LIN2

V (s-reference)

2 : 1

Notes:

1. V(s-interface): Transmitter output at the S-interface reference point.

2. RL is the termination impedence at the S interface.

3. CL is the effective capacitance at the S interface.

4. R1 and R2 are the transmitter output series resistors; their value depends upon the characteristics of the pulse transformer

(see Figure 28).

5. R3 and R4 are required for multipoint operation to prevent loading of the line when power is removed from the terminal.

09893H-19

LOUT2

LOUT1

–

50 ohms

VLOUT

50 ohms

200 ohms

CL = 200 pF

High Mark

VLOUT

50%

Low Mark

High Mark

09893H-19

09893H-20

Figure 26.

Equivalent Test Load

Conditions

Figure 27.

Differential Output Signals

Between LOUT2 and LOUT1 (Using the

Test Circuit in Figure 24)

AM79C30AVC Datasheet(PDF) 78 Page - Advanced Micro Devices

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