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參數(shù)資料
| 型號(hào)： | IDT82V2048SDAG |
| 廠商： | IDT, Integrated Device Technology Inc |
| 文件頁(yè)數(shù)： | 8/62頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC LIU T1/E1 8CH SHORT 144-TQFP |
| 標(biāo)準(zhǔn)包裝： | 5,000 |
| 類型： | 線路接口裝置（LIU） |
| 規(guī)程： | E1 |
| 電源電壓： | 3.13 V ~ 3.47 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 144-LQFP |
| 供應(yīng)商設(shè)備封裝： | 144-TQFP（20x20） |
| 包裝： | 托盤 |
| 其它名稱： | 82V2048SDAG |
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16
IDT82V2048S OCTAL T1/E1 SHORT HAUL LIU WITH SINGLE ENDED OPTION
INDUSTRIAL TEMPERATURE RANGES
2.4.6
ALARM INDICATION SIGNAL (AIS) DETECTION
Alarm Indication Signal is available only in host mode with clock
recovery, as shown in Table-7.
2.4.7
ERROR DETECTION
The device can detect excessive zeros, bipolar violation and B8ZS/
the three kinds of errors are reported in both host mode and hardware
mode with B8ZS/HDB3 line code rule used. In host mode, the e-CZER
and e-CODV are used to determine whether excessive zeros and code
violation are reported respectively. When the device is configured in AMI
decoding mode, only bipolar violation can be reported.
The error detection is available only in single rail mode in which the
pin CVn/RDNn is used as error report output (CVn pin).
The configuration and report status of error detection are summa-
rized in Table-8.
Table-5 Configuration of the Line Code Rule
Hardware Mode
Host Mode
CODE
Line Code Rule
CODE in GCF
CODEn in e-CODE
SINGn in e-SING
Line Code Rule
Low
All channels in B8ZS/HDB3
00/1
0
All channels in B8ZS/HDB3
00
1
10/1
0
All channels in AMI
High
All channels in AMI
11
1
01
1
CHn in AMI
1
0
1
CHn in B8ZS/HDB3
Table-6 LOS Condition in Clock Recovery Mode
Standard
Signal on
LOSn
ANSI T1.231 for T1
G.775 for E1
ETSI 300 233 for E1
LOS
Detected
Continuous Intervals
175
32
2048 (1 ms)
High
Amplitude(1)
1. LOS levels at device RTIPn and RRINGn for differential receive termination and RTIPn for Single Ended receive termination. For more detail regarding the LOS parameters, please
refer to Receiver Characteristics on page 49.
Differential
below typical 200 mVp
Single Ended below typical 158 mVp
below typical 158 mVp
Cleared
Density
12.5% (16 marks in a sliding
128-bit period) with no more
than 99 continuous zeros
12.5% (4 marks in a sliding
32-bit period) with no more
than 15 continuous zeros
12.5% (4 marks in a sliding
32-bit period) with no more
than 15 continuous zeros
Low
Amplitude(1)
Differential
exceed typical 250 mVp
Single Ended exceed typical 197 mVp
exceed typical 197 mVp
exceed typical 197mVp
Table-7 AIS Condition
ITU G.775 for E1
(Register LAC defaulted to ‘0’)
ETSI 300 233 for E1
(Register LAC set to ‘1’)
ANSI T1.231 for T1
AIS Detected Less than 3 zeros contained in each of two
consecutive 512-bit stream are received
Less than 3 zeros contained in a 512-bit
stream are received
Less than 9 zeros contained in a 8192-bit stream (a ones
density of 99.9% over a period of 5.3 ms) are received
AIS Cleared
3 or more zeros contained in each of two
consecutive 512-bit stream are received
3 or more zeros contained in a 512-bit
stream are received
9 or more zeros contained in a 8192-bit stream are
received
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