DS21Q44TN datasheet(7/105 Pages) DALLAS

Part #	DS21Q44TN

Description	Enhanced QUAD E1 FRAMER

Download	105 Pages

Scroll/Zoom	100%

Manufacturer	DALLAS [Dallas Semiconductor]

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

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DS21Q44

7 of 105

2.

DS21Q44 PIN DESCRIPTION

Pin Description Sorted by Pin Number Table 2-1

SYMBOL

TYPE

DESCRIPTION

1

TCHBLK0

O

Transmit Channel Block from Framer 0

2

TPOS0

O

Transmit Bipolar Data from Framer 0

3

TNEG0

O

Transmit Bipolar Data from Framer 0

4

RLINK0

O

Receive Link Data from Framer 0

5

RLCLK0

O

Receive Link Clock from Framer 0

6

RCLK0

I

Receive Clock for Framer 0

7

RNEG0

I

Receive Bipolar Data for Framer 0

8

RPOS0

I

Receive Bipolar Data for Framer 0

9RSIG0

[RCHCLK0]

O

[O]

Receive Signaling Output from Framer 0

[Receive Channel Clock from Framer 0]

10

RCHBLK0

O

Receive Channel Block from Framer 0

11

RSYSCLK0

I

Receive System Clock for Elastic Store in Framer 0

12

RSYNC0

I/O

Receive Sync for Framer 0

13

RSER0

O

Receive Serial Data from Framer 0

14

VSS

-

Signal Ground

15

VDD

-

Positive Supply Voltage

16

SPARE1

[RMSYNC0]

-

[O]

RESERVED - must be left unconnected for normal operation

[Receive Multiframe Sync from Framer 0]

17

RFSYNC0

O

Receive Frame Sync from Framer 0

18

JTRST*

[RLOS/LOTC0]

I

[O]

JTAG Reset

[Receive Loss of Sync/Loss of Transmit clock from Framer 0]

19

TCLK0

I

Transmit Clock for Framer 0

20

TLCLK0

O

Transmit Link Clock from Framer 0

21

TSYNC0

I/O

Transmit Sync for Framer 0

22

TLINK0

I

Transmit Link Data for Framer 0

23

A0

I

Address Bus Bit 0; LSB

24

A1

I

Address Bus Bit 1

25

A2

I

Address Bus Bit 2

26

A3

I

Address Bus Bit 3

27

A4

I

Address Bus Bit 4

28

A5

I

Address Bus Bit 5

29

A6/ALE (AS)

I

Address Bus Bit 6; MSB or Address Latch Enable (Address

Strobe)

30

INT*

O

Receive Alarm Interrupt for all Four Framers

31

TSYSCLK1

I

Transmit System Clock for Elastic Store in Framer 1

32

TSER1

I

Transmit Serial Data for Framer 1

33

TSSYNC1

I

Transmit Sync for Elastic Store in Framer 1

34

TSIG1

[TCHCLK1]

I

[O]

Transmit Signaling Input for Framer 1

[Transmit Channel Clock from Framer 1]

35

TCHBLK1

O

Transmit Channel Block from Framer 1

36

TPOS1

O

Transmit Bipolar Data from Framer 1

37

TNEG1

O

Transmit Bipolar Data from Framer 1

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DS21Q44TN Datasheet(PDF) 7 Page - Dallas Semiconductor

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