DS2143 datasheet(1/44 Pages) DALLAS

Teilenummer	DS2143

Bauteilbeschribung	E1/ISDN-PRI framing transceiver

PDF	44 Pages

Scroll/Zoom	100%

Hersteller	DALLAS [Dallas Semiconductor]

Direct Link	https://www.maximintegrated.com/en.html

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112099

FEATURES

E1/ISDN-PRI framing transceiver

Frames to CAS, CCS, and CRC4 formats

Parallel control port

Onboard two frame elastic store slip buffer

Extracts and inserts CAS signaling bits

Programmable output clocks for fractional E1

links, DS0 loopbacks, and drop and insert

applications

Onboard Sa data link support circuitry

FEBE E-Bit detection, counting and

generation

Pin-compatible with DS2141A T1 Controller

5V supply; low power (50 mW) CMOS

Available in 40-pin DIP and 44-pin PLCC

(DS2143Q)

PIN ASSIGNMENT

DESCRIPTION

The DS2143 is a comprehensive, software-driven E1 framer. It is meant to act as a slave or coprocessor to

a microcontroller or microprocessor. Quick access via the parallel control port allows a single micro to

handle many E1 lines. The DS2143 is very flexible and can be configured into numerous orientations via

software. The software orientation of the device allows the user to modify their design to conform to

future E1 specification changes. The controller contains a set of 69 8-bit internal registers which the user

DS2143/DS2143Q

E1 Controller

www.dalsemi.com

40-Pin DIP (600-mil)

13

39

TCHCLK

TNEG

AD1

AD2

AD3

AD4

AD5

AD6

BTS

AD7

VDD

TLCLK

INT1

INT2

RLOS/LOTC

TCHBLK

RCHBLK

LI_CS

LI_CLK

LI_SDI

RNEG

SYSCLK

1

2

3

4

5

6

7

8

9

10

11

12

14

40

38

37

36

35

34

33

32

31

30

29

27

28

TSER

TPOS

AD0

TCLK

TSYNC

TLINK

19

RD(DS)

CS

ALE(AS)

WR(R/W)

VSS

RLINK

RPOS

RSYNC

RSER

RCHCLK

RLCLK

RCLK

15

16

17

18

20

26

25

24

23

21

22

AD0

AD1

AD2

AD3

AD4

AD5

RLOS/LOTC

TCHBLK

RCHBLK

LI_CS

LI_CLK

LI_SDI

AD6

NC

39

38

37

36

35

34

33

7

8

9

10

11

12

13

6

5

4

3

2

1

44

43

42

41

40

18

19

20

21

22

23

24

25

26

27

28

AD7

BTS

RD(DS)

NC

14

15

16

17

NC

SYSCLK

RNEG

RPOS

32

31

30

29

44-PIN PLCC

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