CS61318 View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CS61318

E1 Line Interface Unit

Cirrus Logic 

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CS61318

+

33 µF

+5V

0.1 µF

+

1.0 µF

Control

&

Monitor

Frame

Format

Encoder/

Decoder

RGND

28 TAOS

1 MCLK

26 RLOOP

27 LLOOP

12 LOS

23 NLOOP

11 JASEL

5 MODE

7 RPOS

6 RNEG

8 RCLK

21

RV+

15

TV+

TGND

SD I 24

SDO 25

CS61318

IN

HARDWARE

MODE

RTIP 19

R1

R2

RRING 20

1

0.47 µF

5

T1 1:1

2

RECEIVE

LINE

6

3 TPOS

4 TNEG

2 TCLK

9 XTALIN

10 XTALOUT

RGND

22

TRING

TTIP

R3 0.47 µF

16

2

13

R4

6

T2 1:N

1

TRANSMIT

5 LINE

TGND

14

Figure 13. Hardware Mode Configuration

R1 (Ω)

R2 (Ω)

R3 (Ω)

R4 (Ω)

T2

E1

75 Ω

Coaxial Cable

37.5

37.5

15

15

1:1.58

E1

120 Ω

Twisted Pair

60

60

15

15

1:2

NOTE: The 0.47µF capacitor between R1 & R2 may be omitted if common mode noise is not an issue.

NOTE: The optional 0.47µF DC blocking cap eliminates DC saturation current through T2

DS441PP2

27

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