设计套件，

DS26504

T1 / E1 / J1 / 64KCC BITS元

www.maxim-ic.com

概述

该DS26504是楼宇综合定时供给系统

（ BITS ）时钟恢复单元。它也可以用作

基本T1 / E1收发器。可以在接收器部分

从T1 ， E1 ，路64kHz复合时钟恢复时钟

（ 64KCC ）和6312kHz同步定时

接口。在T1和E1模式下，同步

状态消息（SSM ） ，也可以恢复。该

发送部分可以直接连接到T1 ，E1或

64KCC同步接口以及源

在SSM中的T1和E1模式。该DS26504可以

任何支持入站之间的转换

同步时钟频率和任何支持

出站速度。该DS26504还可以接受的8kHz

以及一个19.44MHz的参考时钟。单独

输出被提供到源一6312kHz时钟。该

设备可以通过并行，串行控制，或

硬件控制器端口。

应用

BITS定时

转换率

特点

接受的8kHz和19.44MHz的引用

除了T1，E1和路64kHz复合时钟

GR378复合时钟标准

G.703 2048kHz同步接口

柔顺

G.703路64kHz选项A & B集中时钟

同步接口标准

G.703路64kHz日本子母钟

同步接口标准

G.703 6312kHz日本同步

接口兼容

接口标准T1 / J1 （ 1.544MHz ）和E1

(2.048MHz)

接口CMI -编码T1 / J1和E1

T1 / E1发送有效载荷时钟输出

短期和长途线路接口

发送和接收T1 BOC SSM信息

带有接收信息状态更改和

验证指示

发送和接收E1萨（N ）位SSM

信息，带有接收信息状态变化的

迹象

晶振的抖动衰减器具有旁路模式

T1和E1操作

完全独立的发送和接收

的功能

内部软件可选接收和

发送端的终止

75/100/110/120/133

监控模式的桥接应用

接受16.384MHz的， 12.8MHz ， 8.192MHz的，

4.096MHz ， 2.048MHz的，或1.544MHz主

时钟

路64kHz ， 8kHz的，而400Hz的输出复合

时钟模式

8位并行控制端口，复用或

非复用， Intel或Motorola

串行（ SPI）控制端口和硬件控制

模式

通过提供LOS ， AIS和LOF指示

硬件输出引脚

快速发射机输出禁止通过设备

引脚的保护倒换

IEEE 1149.1 JTAG边界扫描

3.3V供电，容许5V输入和

输出

引脚和软件兼容的DS26502

和DS26503

订购信息

部分

DS26504L

DS26504LN

温度范围

0 ° C至+ 70°C

-40 ° C至+ 85°C

PIN- PACKAGE

64 LQFP

64 LQFP

注意：

该器件的一些修订可能偏离称为勘误表公布的规格。任何器件的多个版本

可能同时获得通过不同的销售渠道。欲了解器件勘误表的信息，请点击这里：

www.maxim-ic.com/errata 。

1 128

REV ： 100507

DS26504 T1 / E1 / J1 / 64KCC BITS元

目录

1.

1.1

1.2

1.3

1.4

1.5

1.6

特点.......................................................................................................................7

G

ENERAL

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

L

INE

I

覆盖整个院落

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

J

伊特尔

A

TTENUATOR

（ T1 / E1 M

副执行秘书办公室

O

NLY

) ..................................................................................7

F

RAMER

/F

ORMATTER

...................................................................................................................8

T

EST和

D

IAGNOSTICS

...............................................................................................................8

C

ONTROL

P

ORT

............................................................................................................................8

2.

3.

4.

4.1

4.2

4.3

4.4

4.5

4.6

4.7

规范标准................................................ ................................... 9

框图.......................................................................................................11

引脚功能说明............................................... ...................................... 14

T

RANSMIT

PLL ...........................................................................................................................14

T

RANSMIT

S

IDE

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

R

ECEIVE

S

IDE

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

C

ONTROLLER

I

覆盖整个院落

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

JTAG.........................................................................................................................................20

L

INE

I

覆盖整个院落

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

P

OWER

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

5.

6.

6.1

6.2

6.3

6.4

6.5

6.6

6.7

6.8

PINOUT...........................................................................................................................22

硬件控制器接口............................................... ..................... 25

T

RANSMIT

C

LOCK

S

环境允许

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

I

NTERNAL

T

发芽

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

L

INE

B

UILD

-O

UT

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

R

ECEIVER

O

操作摄像机

M

副执行秘书办公室

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

T

变送器

O

操作摄像机

M

副执行秘书办公室

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

MCLK P

RE

-S

分频器

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

P

AYLOAD

C

LOCK

O

安输出

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

O

THER

H

ARDWARE

C

ONTROLLER

M

ODE

F

EATURES

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

7.

7.1

7.2

处理器接口................................................ ............................................ 30

P

ARALLEL

P

ORT

F

UNCTIONAL

D

ESCRIPTION

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

SPI S

ERIAL

P

ORT

I

覆盖整个院落

F

UNCTIONAL

D

ESCRIPTION

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

时钟相位和极性.....................................................................................................................三十

位Order...............................................................................................................................................三十

控制字节.........................................................................................................................................三十

爆Mode...........................................................................................................................................三十

注册Writes..................................................................................................................................... 31

寄存器读.................................................................................................................................... 31

7.2.1

7.2.2

7.2.3

7.2.4

7.2.5

7.2.6

7.3

7.3.1

7.3.2

7.3.3

R

EGISTER

M

AP

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

上电排序............................................................................................................................ 34

测试复位寄存器............................................................................................................................. 34

模式配置寄存器............................................................................................................... 35

7.4

7.5

7.6

7.7

I

NTERRUPT

H

ANDLING

................................................................................................................37

S

TATUS

R

EGISTERS

....................................................................................................................37

I

载文信息

R

EGISTERS

...........................................................................................................38

I

NTERRUPT

I

载文信息

R

EGISTERS

.........................................................................................38

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DS26504 T1 / E1 / J1 / 64KCC BITS元

8.

8.1

T1成帧器/ FORMATTER控制寄存器............................................ ........ 39

T1

ONTROL

R

EGISTERS

............................................................................................................39

9.

9.1

9.2

E1成帧器/ FORMATTER控制寄存器............................................ ........ 45

E1

ONTROL

R

EGISTERS

...........................................................................................................45

我E1

载文信息

R

EGISTERS

......................................................................................................48

10.

11.

11.1

11.2

11.3

I / O引脚配置选项............................................ ................................ 52

T1同步状态消息.............................................. ................ 55

T1 B

IT

-O

RIENTED

C

ODE

（ BOC ）C

ONTROLLER

............................................................................55

T

RANSMIT

中国银行..........................................................................................................................55

R

ECEIVE

中国银行............................................................................................................................56

12.

12.1

E1同步状态消息.............................................. ................ 64

S

A

/S

I

B

IT

A

CCESS

B

ASED ON

CRC4 M

ULTIFRAME

......................................................................64

SA位变化State......................................................................................................................... 65

12.1.1

12.2

A

LTERNATE

S

A

/S

I

B

IT

A

CCESS

B

ASED ON

D

OUBLE

-F

RAME

..........................................................76

13.

13.1

13.2

线路接口单元（ LIU） ............................................ ............................................ 79

刘

PERATION

..........................................................................................................................80

刘

ECEIVER

............................................................................................................................80

接收电平Indicator........................................................................................................................ 80

接收G.703第13同步信号.......................................... ................................... 81

监控模式....................................................................................................................................... 81

13.2.1

13.2.2

13.2.3

13.3

13.3.1

13.3.2

13.3.3

13.3.4

刘牛逼

变送器

......................................................................................................................81

发送短路Detector/Limiter................................................................................................ 82

发送开路检测........................................................................................................... 82

发送BPV错误插入............................................................................................................... 82

发送G.703第13同步信号（ E1模式） ...................................... ..................... 82

13.4

13.5

13.6

13.7

13.8

13.9

MCLK P

RE

-S

分频器

...................................................................................................................82

J

伊特尔

A

TTENUATOR

..................................................................................................................82

CMI （C

ODE

M

ARK

I

n版本

) O

PTION

.......................................................................................83

刘成

ONTROL

R

EGISTERS

..........................................................................................................84

R

ECOMMENDED

C

IRCUITS

...........................................................................................................92

C

OMPONENT

S

PECIFICATIONS

.....................................................................................................94

14.

15.

15.1

15.2

环回配置................................................ ..................................... 98

路64kHz同步接口............................................... ..................... 99

R

ECEIVE

64

K

H

Z

S

YNCHRONIZATION

I

覆盖整个院落

O

PERATION

.......................................................99

T

RANSMIT

64

K

H

Z

S

YNCHRONIZATION

I

覆盖整个院落

O

PERATION

...................................................100

G.703 A级................................................................................................................................................... 100

16.

16.1

16.2

6312KHZ同步接口............................................... ............... 101

R

ECEIVE

6312

K

H

Z

S

YNCHRONIZATION

I

覆盖整个院落

O

PERATION

.................................................101

T

RANSMIT

6312

K

H

Z

S

YNCHRONIZATION

I

覆盖整个院落

O

PERATION

...............................................101

17.

17.1

17.2

17.3

17.4

JTAG边界扫描结构和测试访问端口................. 102

I

NSTRUCTION

R

EGISTER

...........................................................................................................106

T

美东时间

R

EGISTERS

......................................................................................................................107

B

OUNDARY

S

可以

R

EGISTER

.....................................................................................................107

B

YPASS

R

EGISTER

...................................................................................................................107

3的128

DS26504 T1 / E1 / J1 / 64KCC BITS元

17.5

I

DENTIFICATION

R

EGISTER

........................................................................................................107

18.

18.1

功能时序图............................................... .............................. 110

P

ROCESSOR

I

覆盖整个院落

...........................................................................................................110

并口Mode.............................................................................................................................. 110

SPI串行端口Mode.......................................................................................................................... 110

18.1.1

18.1.2

19.

20.

20.1

20.2

20.3

20.4

20.5

操作参数................................................ ....................................... 113

AC时序参数和图表............................................. ............... 115

M

ULTIPLEXED

B

US

....................................................................................................................115

N

ONMULTIPLEXED

B

US

.............................................................................................................118

S

ERIAL

B

US

..............................................................................................................................121

R

ECEIVE

S

IDE

AC - C

极特

.......................................................................................123

T

RANSMIT

S

IDE

AC - C

极特

.....................................................................................125

21.

22.

22.1

修订历史....................................................................................................127

封装信息................................................ .......................................... 128

64-P

IN

LQFP (56-G4019-001).................................................................................................128

4 128

DS26504 T1 / E1 / J1 / 64KCC BITS元

图列表

图3-1 。框图......................................................................................................................................... 11

图3-2 。回环复用图（ T1 / E1模式专用） ........................................ ................................................. 12

图3-3 。发射PLL时钟复用图.......................................................................................................... 12

图3-4 。主时钟PLL图..................................................................................................................... 13

图13-1 。基本的网络连接.................................................................................................................... 79

图13-2 。典型监测中的应用................................................................................................................... 81

图13-3 。 CMI编码........................................................................................................................................... 83

图13-4 。软件选择终止，金属保护........................................... .................................. 92

图13-5 。软件选择终止，纵联保护........................................... ........................... 93

图13-6 。 E1发送脉冲Template................................................................................................................. 95

图13-7 。 T1发射脉冲模板................................................................................................................. 95

图13-8 。抖动容限（ T1 Mode).................................................................................................................... 96

图13-9 。抖动容限（ E1 Mode).................................................................................................................... 96

图13-10 。抖动衰减（ T1 Mode)................................................................................................................ 97

图13-11 。抖动衰减（ E1模式） ............................................................................................................... 97

图15-1 。路64kHz复合时钟模式信号格式............................................ .......................................... 99

图17-1 。 JTAG功能框图......................................................................................................... 102

图17-2 。 TAP控制器状态Diagram............................................................................................................. 105

图18-1 。 SPI串行端口访问，读取模式， CPOL = 0 ， CPHA = 0 ................................... ............................ 110

图18-2 。 SPI串行端口访问，读取模式， CPOL = 1 ， CPHA = 0 ................................... ............................ 110

图18-3 。 SPI串行端口访问，读取模式， CPOL = 0 ， CPHA = 1 ................................... ............................ 110

图18-4 。 SPI串行端口访问，读取模式， CPOL = 1 ， CPHA = 1 ................................... ............................ 111

图18-5 。 SPI串行端口访问，写入模式， CPOL = 0 ， CPHA = 0 ................................... ............................ 111

图18-6 。 SPI串行端口访问，写入模式， CPOL = 1 ， CPHA = 0 ................................... ............................ 111

图18-7 。 SPI串行端口访问，写入模式， CPOL = 0 ， CPHA = 1 ................................... ............................ 112

图18-8 。 SPI串行端口访问，写入模式， CPOL = 1 ， CPHA = 1 ................................... ............................ 112

图20-1 。英特尔总线读时序（ BTS = 0 / BIS [ 1 ： 0 ] = 00 ） ................................ ............................................... 116

图20-2 。英特尔总线写时序（ BTS = 0 / BIS [ 1 ： 0 ] = 00 ） ................................ ................................................ 116

图20-3 。 Motorola总线时序（ BTS = 1 / BIS [ 1 ： 0 ] = 00 ） ................................. .................................................. 117

图20-4 。英特尔总线读时序（ BTS = 0 / BIS [ 1 ： 0 ] = 01 ） ................................ ................................................ 119

图20-5 。英特尔总线写时序（ BTS = 0 / BIS [ 1 ： 0 ] = 01 ） ................................ ................................................ 119

图20-6 。摩托罗拉总线读时序（ BTS = 1 / BIS [ 1 ： 0 ] = 01 ） ................................ ......................................... 120

图20-7 。摩托罗拉总线写时序（ BTS = 1 / BIS [ 1 ： 0 ] = 01 ） ................................ ......................................... 120

图20-8 。 SPI接口时序图， CPHA = 0 ，双[ 1 ： 0 ] = 10 ................................. ................................... 122

图20-9 。 SPI接口时序图， CPHA = 1 ，双[ 1 ： 0 ] = 10 ................................. ................................... 122

图20-10 。接收时序-T1 ， E1 ， 64KCC模式......................................... .................................................. 。 124

图20-11 。传输时序-T1 ， E1 ， 64KCC模式......................................... .................................................. 126

5 128