ATTL7556AAU 查看數據表（PDF） - Agere -> LSI Corporation

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ATTL7556AAU

Low-Power SLICs with Battery Switch

Agere -> LSI Corporation 

L7556, L7557 Low-Power SLICs

with Battery Switch

Data Sheet

January 2000

Applications

VBAT1

CBAT1

0.1 µF

VCC

VCC

CROWBAR

PROTECTOR

TIP

RPT

50 Ω

RPR

50 Ω

RING

CROWBAR

PROTECTOR

RTS1

CRTS2

402 Ω 0.27 µF

RTS2

274 kΩ

VRING

RPROG

66.8 kΩ

RLCTH

24.9 kΩ

CCC

0.1 µF

L7581

RELAY

RTSP

2.0 MΩ

CRTS1

0.022 µF

RTSN

2.0 MΩ

DBAT

CBAT2

0.1 µF

CCC

0.1 µF

2

10

1

IPROG VBAT1 VBAT2

9

DCOUT

21

45

BGND LBAT VCC

8

LCTH

5

VCC

22

PT

L7556/L7557

SLIC

19

AGND

CB1

0.47 µF

14

VITR

RT2

18.7 kΩ

CB2

0.47 µF

RCVP 6

RT1

54.9 kΩ

RRCV

84.5 kΩ

RX

90.9 kΩ

VFXIN –

+

RHB1

90.9 kΩ

VFXIP PWROP

GSX

DX

DR

FSX

RGP

57.6 kΩ

CGP

330 pF

FSEP

MCLK

11

PR

24

RTSP

23

RTSN CF2

12

CF1

13

CF1

0.47 µF

AGND AGND

18

19

RCVN

7

B1

B0

BS

27

17

4

CONTROL

INPUTS

NLC 26 SUPERVISION

NRDET 25 OUTPUTS

BGND

21

ASEL

1/4 T7504

CODEC

PCM

HIGHWAY

SYNC

AND

CLOCK

CONTROL

INPUT

VBAT

Notes:

Tx = 0 dB.

Rx = 0 dB.

Termination = 600 Ω.

Transhybrid = 600 Ω.

CF2

0.1 µF

12-2573.Y(F)

Figure 11. Basic Loop Start Application Circuit Using T7504 Type Codec

GROUND START

APPLICATION CIRCUIT

RGDET

100 kΩ

RGDET

ICM

VCC

RICM2

154 kΩ

RGDET

CICM

0.47 µF

Figure 12. Ring Ground Detection Circuit

12-3547(F)

14

Lucent Technologies Inc.

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