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参数资料
型号： DS21Q48N
厂商： Maxim Integrated Products
文件页数： 12/73页
文件大小： 0K
描述： IC LIU E1/T1/J1 4X 5V LONG144BGA
标准包装： 90
类型： 线路接口装置（LIU）
规程： E1
电源电压： 4.75 V ~ 5.25 V
安装类型： 表面贴装
封装/外壳： 144-BBGA
供应商设备封装： 144-PBGA（17x17）
包装： 管件
DS2148/DS21Q48
2 of 73
TABLE OF CONTENTS
1
DETAILED DESCRIPTION .................................................................................................. 5
1.1
FUNCTION DESCRIPTION..................................................................................................................5
1.2
DOCUMENT REVISION HISTORY .......................................................................................................6
2
PIN DESCRIPTION............................................................................................................ 10
3
HARDWARE MODE .......................................................................................................... 23
3.1
REGISTER MAP .............................................................................................................................23
3.2
PARALLEL PORT OPERATION .........................................................................................................24
3.3
SERIAL PORT OPERATION..............................................................................................................24
4
CONTROL REGISTERS .................................................................................................... 28
4.1
DEVICE POWER-UP AND RESET.....................................................................................................31
5
STATUS REGISTERS ....................................................................................................... 34
6
DIAGNOSTICS .................................................................................................................. 39
6.1
IN-BAND LOOP CODE GENERATION AND DETECTION ......................................................................39
6.2
LOOPBACKS ..................................................................................................................................43
6.2.1
Remote Loopback (RLB) ......................................................................................................43
6.2.2
Local Loopback (LLB) ...........................................................................................................43
6.2.3
Analog Loopback (ALB) ........................................................................................................44
6.2.4
Dual Loopback (DLB)............................................................................................................44
6.3
PRBS GENERATION AND DETECTION ............................................................................................44
6.4
ERROR COUNTER..........................................................................................................................44
6.4.1
Error Counter Update............................................................................................................45
6.5
ERROR INSERTION ........................................................................................................................45
7
ANALOG INTERFACE ...................................................................................................... 46
7.1
RECEIVER .....................................................................................................................................46
7.2
TRANSMITTER ...............................................................................................................................47
7.3
JITTER ATTENUATOR .....................................................................................................................47
7.4
G.703 SYNCHRONIZATION SIGNAL.................................................................................................48
8
DS21Q48 QUAD LIU ......................................................................................................... 55
9
DC CHARACTERISTICS ................................................................................................... 59
9.1
THERMAL CHARACTERISTICS ................................................................................................60
10 AC CHARACTERISTICS ................................................................................................... 61
11 PACKAGE INFORMATION ............................................................................................... 70
11.1 44-PIN TQFP (56-G4012-001) .....................................................................................................70
11.2 49-BALL CSGBA (7MM X 7MM) (56-G6006-001) ...........................................................................71
11.3 144-BALL CSBGA (17MM X 17MM) (56-G6011-001) .....................................................................72
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