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LUCL8560EP-D

Low-Power SLIC with Ringing

Agere -> LSI Corporation 

L8560 Low-Power SLIC with Ringing

Data Sheet

April 2000

Pin Information (continued)

Table 2. Pin Descriptions (continued)

32-Pin 44-Pin

—

24

26

25

27

26

28

27

29

28

—

29

—

30

—

31

30

32

31

33

32

34

1

35

2

—

2

—

—

36

3

37

4

38

5

39

—

40

6

41

7

42

8

43

—

44

Symbol

NC

B2

B1

B0

BR

NC

NC-NTP

NC

TG

VTX

TXI

NSTAT

VEE

NC

NC

VITR

RCVP

RCVN

NC

FB2

FB1

LCTH

DCR

Type

Description

— No Connection. May be used as a tie point.

I State Control Input. B0, B1, B2, and BR determine the state of the SLIC.

See Table 3. Pin B2 has a 40 kΩ pull-up.

I State Control Input. B0, B1, B2, and BR determine the state of the SLIC.

See Table 3. Pin B1 has a 40 kΩ pull-up.

I State Control Input. B0, B1, B2, and BR determine the state of the SLIC.

See Table 3. Pin B0 has a 40 kΩ pull-up.

I State Control Input. B0, B1, B2, and BR determine the state of the SLIC.

See Table 3. Pin BR has a 40 kΩ pull-up.

— No Connection. May be used as a tie point.

— No Connection. May not be used as a tie point.

— No Connection. May be used as a tie point.

— Transmit Gain. Connect a 4.32 kΩ resistor from this pin to VTX.

O The voltage at this pin is directly proportional to the differential tip/ring current.

— ac/dc Separation. Connect a 0.1 µF capacitor from this pin to VTX.

O Loop Detector Output/Ring Trip Detector Output. This output is a wired-

OR of the NLC/NRDET outputs. When low, this logic output indicates that an

off-hook condition exists or that ringing has been tripped.

— –5 V Power Supply L8560C.

— No Connection L8560A/D/F. May be used as a tie point.

— No Connection. May be used as a tie point.

O ac Output Voltage. This output is a voltage that is directly proportional to the

differential ac tip/ring current.

I Receive ac Signal Input (Noninverting). This high-impedance input con-

trols the ac differential voltage on tip and ring.

I Receive ac Signal Input (Inverting). This high-impedance input controls the

ac differential voltage on tip and ring.

— No Connection. May be used as a tie point.

— Polarity Reversal Slowdown. Connect a capacitor to ground.

— Polarity Reversal Slowdown. Connect a capacitor to ground.

I Loop Closure Threshold Input. Connect a resistor to DCOUT to set off-

hook threshold.

I dc Resistance. Short to analog ground for dc feed resistance of 55 Ω. The dc

feed resistance can be increased to a nominal 760 Ω by shorting DCR to

DCOUT. Intermediate values can be set by a simple resistor divider from

DCOUT to ground with the trip at DCR (44-pin PLCC only).

8

Lucent Technologies Inc.

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