STLC3065 datasheet(6/27 Pages) STMICROELECTRONICS

Teilenummer	STLC3065

Bauteilbeschribung	WLL SUBSCRIBER LINE INTERFACE CIRCUIT

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Table 2. Dual Port control.

D0

D1

D2

P1

P2

OPER. MODE

LINE 1

LINE 2

DET

DET1

DET2

0

X

0

Power Down

Open

-

0

X

1

High Z feed.

To P.S. via

Res.

To P.S. via

Res.

off-hook

line 1+2

off-hook

line 1

off-hook

line 2

0

X

0

1

Power Down/

High Z feed.

Open

To P.S. via

Res.

off-hook

line 2

-

off-hook

line 2

0

X

1

0

High Z feed.

Power Down

To P.S. via

Res.

Open

off-hook

line 1

off-hook

line 1

-

X

1

X

0

ACTIVE

300

µA bias 300µA bias

-

X

1

X

1

ACTIVE

To Buffer

off-hook

line 1+2

--

X

1

X

0

1

ACTIVE

300

µA bias To Buffer

off-hook

line 2

--

X

1

X

1

0

ACTIVE

To Buffer

300

µA bias

off-hook

line 1

--

1

0

X

0

1

RING

300

µA bias 300µA bias

-

1

0

X

1

RING

To Buffer

Ring-trip

line 1+2

--

1

0

X

0

1

RING

300

µA bias To Buffer

Ring-trip

line 2

--

1

0

X

1

0

RING

To Buffer

300

µA bias Ring-trip

line 1

--

R1

Is2

Is1

VBAT

TIP1

RING1

TIP2

RING2

Tip

Ring

BGND

Sw1T

Sw1R

Sw2T

Sw2R

Sw4T

Sw3T

Sw4R

Sw3R

Line

Driver

Sw6R

Sw5R

300

µA

300

µA

R1 = 1500 ohm

LINE1

LINE2

Figure 1. Dual Port Concept.

STLC3065

6/27

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