xr

2006年12月

XRT91L30

STS-12 / STM-4或STS-3 / STM-1的SONET / SDH收发器

修订版1.0.1

概述

该XRT91L30是一个完全集成的SONET / SDH

收发器，用于SONET / SDH的622.08 Mbps的STS-12 /

STM-4或155.52 Mbps的STS-3 / STM-1的应用。

该收发器包括一个片上时钟乘法器

单元（CMU ），它使用一个高频相位

锁相环（ PLL），以产生高速

发送串行时钟从慢外部时钟

参考。它还提供时钟和数据恢复

（ CDR ），通过同步的片上电压功能

压控振荡器（VCO ），将输入的串行

数据流。内部CDR的单元可以被禁用

和旁路代替外部回收

从光模块接收到的时钟。无论是

内部恢复时钟或外部回收

时钟可用于循环定时应用。该

芯片提供串行至并行和并行到串行

使用8位的LVTTL系统转换器

接口中接收和发送方向。

发射部分包括一个选项，以接受

F

IGURE

1. B

LOCK

D

作者IAGRAM

XRT91L30

从成帧器/映射器并行时钟信号

同步的发送部分的时序。该装置

可以在内部监控的信号（ LOS ）条件下损失

并在LOS自动静音接收到的数据。一

片上的SONET / SDH帧字节和边界

检测和帧脉冲发生器提供的能力

恢复SONET / SDH成帧和字节对齐

接收的串行数据流转换为8位的并行总线。

应用

SONET / SDH为基础的传输系统

添加/插复用器

交叉连接设备

ATM和多业务交换机，路由器和

交换机/路由器

DSLAM设备

SONET / SDH测试设备

DWDM终端设备

STS-12 / STM-4或STS -3 / STM-1的

收发器

TXDI [7 ：0]的

8

TXPCLK_IO

REFCLKP / N

TTLREFCLK

PISO

（并行输入

串行输出）

ENB

RE -TIMER

TXOP / N

MUX

通过DIV

8

ENB

XOR

CMU

DLOOP

RLOOPS

ALOOP

MUX

CDRAUXREFCLK

MUX

RXDO [7 ：0]的

国家知识产权局

（串行输入

并行输出）

CDR

MUX

RXIP / N

8

XRXCLKIP / N

RxPClkO

DIV 8

控制块

环路滤波器

时钟控制

CAP1N

CAP2N

CAP1P

CAP2P

DLOSDIS

LOSEXT

OOF

FRAMEPULSE

CDRDIS

CMUFREQSEL

Exar公司

公司48720加藤道，弗里蒙特CA， 94538

(510) 668-7000

传真（ 510 ） 668-7017

www.exar.com

STS-12/STS-3

CDRREFSEL

LOOPTIME

PIO_CTRL

RLOOPS

DLOOP

ALOOP

RESET

XRT91L30

STS-12 / STM-4或STS-3 / STM-1的SONET / SDH收发器

特点

xr

修订版1.0.1

针对SONET STS - 12 / STS - 3和SDH STM - 4 / STM- 1的应用

之间进行选择全双工操作STS- 12 / STM -4标准的622.08 Mbps或STS - 3 / STM- 1速率

155.52 Mbps的

单芯片含并行 - 串行转换器，时钟乘法器单元（ CMU ）完全集成的解决方案， serial-

到并行转换器，时钟数据恢复（CDR）功能，以及一个SONET / SDH帧和字节边界

检测电路

能够禁用和旁路片内CDR外部根据接收到的参考时钟恢复通

差分LVPECL输入引脚XRXCLKIP / N

在77.76 Mbps的8位LVTTL并行数据总线的路径STS- 12 / STM - 4或19.44 Mbps的STS - 3 / STM- 1

操作模式

采用差分LVPECL或单端LVTTL CMU参考时钟要么19.44兆赫的频率或

77.76兆赫为STS - 12 / STM - 1或STS - 3 / STM- 1运营

独立CDR参考时钟操作可选择使用77.76 MHz的单端LVTTL输入

能够检测和恢复的SONET / SDH帧边界和字节对齐接收到的并行总线上的数据

诊断功能包括LOS监测和自动接收数据时LOS静音

提供本地，远程和拆分环回模式，以及循环定时模式

可选的灵活性，以重新配置所述发射的并行总线的时钟输出到时钟输入端和接收定时

来自成帧器/映射器设备的信号，以允许所述成帧器/映射器设备时域进行同步

与收发器的发射定时。

符合Telcordia公司， ANSI和ITU -T G.783和G.825 SDH抖动要求，包括T1.105.03 - 2002年

SONET抖动容限规范，符合Bellcore TR- NWT- 000253和GR- 253 -CORE ， GR- 253 SONET ILR

抖动规范。

符合ANSI / TIA / EIA -644和IEEE P1596.3 3.3V LVDS标准，3.3V LVPECL和JESD 8-乙

LVTTL和LVCMOS标准。

工作电压为3.3V核心与3.3V的I / O

比的660mW的STS - 3 / STM - 1模式或800mW的欠STS- 12 / STM -4模式的典型功耗

包装： 10 ×10× 2.0毫米64引脚QFP

2

xr

修订版1.0.1

XRT91L30

STS-12 / STM-4或STS-3 / STM-1的SONET / SDH收发器

F

IGURE

2. 64 QFP P

IN

O

的的UT

XRT91L30 （T

OP

V

IEW

)

AVDD

PIO_CTRL

GND

VDD3.3

RRCLK_1

GND

RRPOS_1

GND

RRNEG_1

AGND_RX

RClkES

AVDD3.3_RX

NC

CAP2P

VDD

CAP2N

DS3/E3_2

CAP1N

SDO

CAP1P

FSS

AVDD3.3_TX

RRNEG_2

AGND_TX

RRPOS_2

TTLREFCLK

RRCLK_2

GND

GND

VDD3.3

AVDD

LOSEXT

49

50

49

51

50

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51

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64

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19

17

18

17

P

艺术

N

棕土

XRT91L30IQ

RESET

RESET

LOOPTM_NOJA

LOOPTIME

CMUFREQSEL

CMUFREQSEL

VDD_PECL

VDD_PECL

TXOP

TXOP

TXON

TXON

LOSDDIS

DLOSDIS

EXTRXCLKIP

XRXCLKIP

EXTRXCLKIN

XRXCLKIN

VDD_PECL

VDD_PECL

OOF

OOF

CDRDIS

CDRDIS

RXIP

RXIP

RXIN

RXIN

VDD3.3

VDD3.3

REFCLKP

REFCLKP

1

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8

9

9

10

10

11

11

12

12

13

13

14

14

15

15

16

16

AGND

TXPCLK_IO

FL1

TXDI7

STS1_1

TXDI6

MCLK_1

GND

GND

TXDI5

RCLK_1

TXDI4

RPOS_1

TXDI3

RNEG_1

TXDI2

VDD

TXDI1

RNEG_0

TXDI0

RPOS_0

STS12/STS3

RCLK_0

CDRREFSEL

GND

VDD3.3

MCLK_0

DLOOP

DJA_1/SDI

RLOOPS

AGND

ALOOP

XRT91L30

XRT91L30

AGND

FL_2

CDRAUXREFCLK

STS1_2

VDD3.3

DJA_2/CS

FRAMEPULSE

MCLK_2

RxPClkO

GND

GND

RXDO7

RCLK_2

RXDO6

VDD

RXDO5

RNEG_2

RXDO4

RPOS_2

RXDO3

GND

RXDO2

DJA_0/SCLK

GND

DS3/E3_0

RXDO1

STS1_0

RXDO0

FL0

VDD3.3

AGND

REFCLKN

订购信息

P

ACKAGE

64引脚QFP铅

O

操作摄像机

T

emperature

R

ANGE

-40

°

C至+ 85

°

C

3

XRT91L30

修订版1.0.1

xr

STS-12 / STM-4或STS-3 / STM-1的SONET / SDH收发器

目录

概述................................................ ................................................. 1

应用...........................................................................................................................................1

F

IGURE

1. B

LOCK

D

作者IAGRAM

XRT91L30 ...................................................................................................................................... 1

特点

......................................................................................................................................................2

F

IGURE

2. 64 QFP P

IN

O

的的UT

XRT91L30 （T

OP

V

IEW

)............................................................................................................ 3

订购INFORMATION.....................................................................................................................3

T

干练

C

ONTENTS

............................................................................................................

I

引脚说明..........................................................................................................4

.....................................................................................................................................................................4

H

ARDWARE

C

ONTROL

....................................................................................................................................4

T

变送器

S

挠度

..................................................................................................................................7

R

ECEIVER

S

挠度

........................................................................................................................................9

P

OWER和

G

圆

..................................................................................................................................10

1.0功能描述.............................................................................................................12

1.1 STS - 12 / STM -4和STS - 3 / STM - 1模式操作的............................... .......................................... 12

1.2时钟输入参考时钟乘法器（合成器） UNIT ...................................... 12

T

ABLE

1 ： CMU

指南

F

Characteristic低频

O

PTIONS

(D

。微分或

S

炉火

-E

NDED

) ................................................................... 12

1.3数据延迟............................................................................................................................................. 12

T

ABLE

2: D

ATA入口到数据EGRESS潜伏期

....................................................................................................................... 12

2.0接收部分.............................................................................................................................13

2.1接收串行输入............................................................................................................................... 13

F

IGURE

3. R

ECEIVE

S

ERIAL

I

NPUT

I

覆盖整个院落

B

LOCK

..................................................................................................................... 13

2.2免费获赠串行数据输入时序...................................................................................................... 14

F

IGURE

4. R

ECEIVE

H

室内运动场

-S

撒尿

S

ERIAL

D

ATA

I

NPUT

T

即时通信

D

IAGRAM

.......................................................................................... 14

T

ABLE

3: R

ECEIVE

H

室内运动场

-

速度

S

ERIAL

D

ATA

I

NPUT

T

即时通信

（ STS - 12 / STM - 4 O

PERATION

) ............................................................. 14

T

ABLE

4: R

ECEIVE

H

室内运动场

-S

撒尿

S

ERIAL

D

ATA

I

NPUT

T

即时通信

（ STS - 3 / STM - 1 O

PERATION

) ............................................................... 14

2.3接收时钟和数据恢复............................................ .................................................. .... 15

T

ABLE

5: C

LOCK

D

ATA

R

ECOVERY单位参考时钟设置

............................................................................................ 15

T

ABLE

6: C

锁定和

D

ATA

R

ECOVERY

U

NIT

P

ERFORMANCE

.......................................................................................................... 15

2.3.1内部时钟和数据恢复BYPASS ......................................... .................................................. 16

F

IGURE

5. I

NTERNAL

C

锁定和

D

ATA

R

ECOVERY

B

YPASS

............................................................................................................ 16

2.4外部接收环路滤波电容............................................ ....................................... 16

F

IGURE

6. E

XTERNAL

L

OOP

F

ILTERS

.............................................................................................................................................. 16

SIGNAL 2.5损失.......................................................................................................................................... 16

F

IGURE

7. LOS

ECLARATION电路

........................................................................................................................................... 17

2.6 SONET帧边界的检测和字节对齐恢复.................................... 17

2.7接收串行输入并行输出（ SIPO） ........................................ ................................. 17

F

IGURE

8. S

IMPLIFIED

B

LOCK

D

作者IAGRAM

国家知识产权局........................................................................................................................... 18

2.8接受并行输出接口............................................. .................................................. 18

F

IGURE

9. R

ECEIVE

P

ARALLEL

O

安输出

I

覆盖整个院落

B

LOCK

............................................................................................................. 18

2.9关闭同时接收数据时输出LOS .......................................... ........................... 18

2.10接收并行数据输出时序............................................ .............................................. 19

F

IGURE

10. R

ECEIVE

P

ARALLEL

O

安输出

T

即时通信

............................................................................................................................ 19

T

ABLE

7: R

ECEIVE

P

ARALLEL

D

ATA

O

安输出

T

即时通信

（ STS - 12 / STM - 4 O

PERATION

) ......................................................................... 19

T

ABLE

8: R

ECEIVE

P

ARALLEL

D

ATA

O

安输出

T

即时通信

（ STS - 3 / STM - 1 O

PERATION

) ........................................................................... 19

T

ABLE

9 ： PECL

和

TTL

ECEIVE

O

UTPUTS

T

即时通信

S

PECIFICATION

.............................................................................................. 20

3.0发射部分..........................................................................................................................21

3.1传递平行输入接口............................................. .................................................. .. 21

F

IGURE

11. T

RANSMIT

P

ARALLEL

I

NPUT

I

覆盖整个院落

B

LOCK

............................................................................................................. 21

3.2发送并行数据输入时序............................................ .................................................. 22

F

IGURE

12. T

RANSMIT

P

ARALLEL

I

NPUT

T

即时通信

.............................................................................................................................. 22

T

ABLE

10: T

RANSMIT

P

ARALLEL

D

ATA

I

NPUT

T

即时通信

（ STS - 12 / STM - 4 O

PERATION

)......................................................................... 22

T

ABLE

11: T

RANSMIT

P

ARALLEL

D

ATA

I

NPUT

T

即时通信

（ STS - 3 / STM - 1 O

PERATION

)........................................................................... 22

3.3备用发送并行总线时钟输入选项.......................................... ................ 23

F

IGURE

13. A

LTERNATE

T

RANSMIT

P

ARALLEL

I

NPUT

I

覆盖整个院落

B

LOCK

(P

ARALLEL

C

LOCK

I

NPUT

O

PTION

) ...................................... 23

3.4备用发送并行数据输入时序........................................... ............................ 23

F

IGURE

14. A

LTERNATE

T

RANSMIT

P

ARALLEL

I

NPUT

T

即时通信

............................................................................................................ 23

T

ABLE

12: A

LTERNATE

T

RANSMIT

P

ARALLEL

D

ATA

I

NPUT

T

即时通信

（ STS - 12 / STM - 4 O

PERATION

) ...................................................... 24

T

ABLE

13: A

LTERNATE

T

RANSMIT

P

ARALLEL

D

ATA

I

NPUT

T

即时通信

（ STS - 3 / STM - 1 O

PERATION

). ....................................................... 24

I

xr

STS-12 / STM-4或STS-3 / STM-1的SONET / SDH收发器

XRT91L30

修订版1.0.1

3.5传递平行输入串行输出（ PISO ） ........................................ .............................. 24

F

IGURE

15. S

IMPLIFIED

B

LOCK

D

作者IAGRAM

PISO ......................................................................................................................... 24

3.6时钟乘法器单元（ CMU ）和RE -TIMER ....................................... .............................................. 25

T

ABLE

14: C

LOCK

M

ULTIPLIER

U

NIT

P

ERFORMANCE

....................................................................................................................... 25

3.7环路定时和时钟控制....................................................................................................... 25

T

ABLE

15: L

OOP

T

即时通信和

C

LOCK

R

ECOVERY配置

................................................................................................. 26

F

IGURE

16. L

OOP

T

即时通信

M

ODE

U

星

I

NTERNAL

CDR

或

E

XTERNAL

R

ECOVERED

C

LOCK

....................................................... 26

3.8传输串行输出控制..................................................................................................... 27

F

IGURE

17. T

RANSMIT

S

ERIAL

O

安输出

I

BLOCK覆盖整个院落

.............................................................................................................. 27

4.0诊断功能................................................................................................................... 28

4.1串行远方返回..................................................................................................................... 28

F

IGURE

18. S

ERIAL

R

EMOTE

L

OOPBACK

......................................................................................................................................... 28

4.2数字本地环回....................................................................................................................... 28

F

IGURE

19. D

IGITAL

L

OCAL

L

OOPBACK

........................................................................................................................................... 28

4.3模拟本地环回...................................................................................................................... 29

F

IGURE

20. A

NALOG

L

OCAL

L

OOPBACK

.......................................................................................................................................... 29

4.4 SPLIT LOOPBACK ......................................................................................................................................... 29

F

IGURE

21. S

PLIT

L

OOPBACK

......................................................................................................................................................... 29

4.5眼图...............................................................................................................................................三十

F

IGURE

22. T

RANSMIT

E

LECTRICAL

O

安输出

E

YE

D

IAGRAM

............................................................................................................. 30

4.6 SONET抖动要求.................................................................................................................三十

4.6.1抖动容限： ................................................................................................................................................三十

F

IGURE

23， GR- 253

伊特尔

T

OLERANCE

M

ASK

.............................................................................................................................. 31

T

ABLE

16 ： XRT91L30

ECEIVER

J

伊特尔

T

OLERANCE

P

ERFORMANCE

............................................................................................. 31

F

IGURE

24. XRT91L30 M

EASURED

J

伊特尔

T

OLERANCE WITH

77.76MH

Z

R

指南

C

LOCK

......................................................... 31

F

IGURE

25. XRT91L30 M

EASURED

J

伊特尔

T

OLERANCE WITH

19.44MH

Z

R

指南

C

LOCK

......................................................... 32

4.6.2抖动GENERATION................................................................................................................................................ 32

T

ABLE

17 ： XRT91L30

PTICAL

J

伊特尔

G

ENERATION使用

223-1 PRBS

图案

........................................................................ 32

T

ABLE

18 ： XRT91L30

PTICAL

J

伊特尔

G

ENERATION使用

223-1 PRBS

PATTERN使用

N

ON

-

标准

F

ILTERS

........................ 32

5.0电气特性............................................... .................................................. .. 33

A

BSOLUTE

M

AXIMUM

评级.................................................................................................................. 33

绝对最大功率和输入/输出额定值.......................................... ............... 33

功率和电流DC ê

LECTRICAL

C

极特

.................................................................... 33

................................................................................................................................................................... 33

LVPECL和LVTTL逻辑信号的直流电气特性...................................... 34

订购信息.................................................................................................................. 35

包装尺寸................................................ ................................................ 35

R

EVISION

H

ISTORY

...................................................................................................................................... 36

II