L9313 datasheet(36/40 Pages) AGERE

36 / 40 page

Data Sheet

September 2001

Full-Feature SLIC and Ringing Relay for TR-57 Applications

L9313 Line Interface and Line Access Circuit

Agere Systems Inc.

ac Applications (continued)

First-Generation Codec ac Interface Network: Resistive Termination (continued)

Example 1, Real Termination (continued)

12-3521i (F)

Notes:

Termination impedance = 600

Ω.

Hybrid balance = 600

Ω.

Tx = 0 dBm.

Rx = 0 dBm.

Figure 15. Agere T7504 First-Generation Codec Resistive Termination, Single Battery Operation

RG1

FUSIBLE

Ω

CVBAT1

0.1

µF

VBAT1

RCVN

RTS

L9313

VBAT

FB2

CF2

0.015

µF

LCF

VTX

RCVP

RT3

140 k

Ω

RRCV

100 k

Ω

RHB1

100 k

Ω

VFXIN

100 k

Ω

GSX

VFRO

FSE

FSEP

MCLK

ASEL

1/4 T7504

CODEC

CONTROL

INPUTS

PCM

HIGHWAY

SYNC

AND

CLOCK

–

ITR

CRTI

0.1

µF

AGND VDD

+2.4 V

CC2

0.1

µF

RGN

RGP

43.2 k

Ω

1 M

Ω

RRING

TRING

100 V—130 V

SECONDARY

OR PTC

FUSIBLE

OR PTC

RRTF

400

Ω

RINGING

SOURCE

CCC

0.1

µF

VCC

CDD

0.1

µF

VDD

CTX

0.15

µF

RGX

6.34 k

Ω

CC1

0.33

µF

RT6

49.9 k

Ω

RSW

PWR

VBAT2/VCC

BGND

VBAT1

TRGDET

ICM

DGND

TXI

VITR

PROTECTOR

180 V—330 V

SECONDARY

PROTECTOR

FB1

CF2

MULTIPLEXED

DATA BUS

TO/FROM

MICROPROCESSOR

PER-LINE

TO/FROM

MICROPROCESSOR

(GAIN OF 8)

NSTAT

RESET

LATCH

28.3 k

Ω

LCTH (10 mA)

VPROG (ILIMIT = 25 mA)

VREF

RVPROG

23.2 k

Ω

RVREF

86.7 k

Ω

OVH (5.5 VOH)

VREF

CF1

RLTCH

59 k

Ω

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