參數(shù)資料
型號： IDT82P20516DBFG
廠商： IDT, Integrated Device Technology Inc
文件頁數(shù)： 45/115頁
文件大?。?/td> 0K
描述： IC LIU T1/E1/J1 16CH SH 484BGA
標準包裝： 84
功能： 線路接口單元（LIU）
接口： E1，J1，T1
電路數(shù)： 16
電源電壓： 1.8V, 3.3V
功率（瓦特）： 2.89W
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 484-LFBGA
供應商設備封裝： 484-CABGA（19x19）
包裝： 托盤
包括： AIS 警報檢測器和發(fā)生器，回送功能，PRBS 發(fā)生器 / 檢測器，遠程檢測器和發(fā)生器
IDT82P20516
16-CHANNEL SHORT HAUL E1 LINE INTERFACE UNIT
Functional Description
35
December 17, 2009
3.5.4
ALARM INDICATION SIGNAL (AIS) DETECTION AND GEN-
ERATION
3.5.4.1 Alarm Indication Signal (AIS) Detection
AIS is monitored in both the receive path and the transmit path.
When the mark density in the received data or in the data input from
the transmit system side meets certain criteria, AIS is declared or
cleared. In E1 mode, the criteria are in compliance with ITU G.775 or
ETSI 300233, as selected by the LAC bit (b7, LOS,...). Refer to Table-13
for details.
When AIS is detected in the receive path, the LAIS_S bit (b6,
STAT1,...) will be set. A transition from ‘0’ to ‘1’ on the LAIS_S bit (b6,
STAT1,...) or any transition (from ‘0’ to ‘1’ or from ‘1’ to ‘0’) on the LAIS_S
bit (b6, STAT1,...) will set the LAIS_IS bit (b6, INTS1,...) to ‘1’, as
selected by the AIS_IES bit (b6, INTES,...). When the LAIS_IS bit (b6,
INTS1,...) is ‘1’, an interrupt will be reported by INT if not masked by the
LAIS_IM bit (b6, INTM1,...).
When AIS is detected in the transmit path, the SAIS_S bit (b7,
STAT1,...) will be set. A transition from ‘0’ to ‘1’ on the SAIS_S bit (b7,
STAT1,...) or any transition (from ‘0’ to ‘1’ or from ‘1’ to ‘0’) on the
SAIS_S bit (b7, STAT1,...) will set the SAIS_IS bit (b7, INTS1,...) to ‘1’,
as selected by the AIS_IES bit (b6, INTES,...). When the SAIS_IS bit
(b7, INTS1,...) is ‘1’, an interrupt will be reported by INT if not masked by
the SAIS_IM bit (b7, INTM1,...).
AIS may be counted by an internal Error Counte. Refer to
3.5.4.2 (Alarm Indication Signal) AIS Generation
AIS can be generated automatically in the receive path and the
transmit path.
In the receive path, when the ASAIS_LLOS bit (b2, AISG,...) is set,
AIS will be generated automatically once LLOS is detected. When the
ASAIS_SLOS bit (b3, AISG,...) is set, AIS will be generated automati-
cally once SLOS is detected. When AIS is generated, RDPn/RDNn
output all ‘1’s. RCLKn (if available) outputs XCLK.
In the transmit path, when the ALAIS_LLOS bit (b0, AISG,...) is set,
AIS will be generated automatically once LLOS is detected. When the
ALAIS_SLOS bit (b1, AISG,...) is set, AIS will be generated automati-
cally once SLOS is detected. When AIS is generated, TTIPn/TRINGn
output all ‘1’s.
In the transmit path, the AIS transmission is controled by the TXAIS
bit (b4, AISG,...). When the TXAIS bit (b4, AISG,...) is set to ‘1’, all ‘1’s
pattern is transmitted at TTIPn/TRINGn.
AIS generation uses XCLK1 as reference clock.
If pattern (including PRBS, ARB and IB) is generated in the same
direction, the priority of pattern generation is higher. The generated
pattern will overwrite automatic AIS. Refer to Section 3.5.5.1 Pattern
Generation for the output data and clock.
Table-13 AIS Criteria
ITU G.775 for E1 (LAC = 0)
ETSI 300233 for E1 (LAC = 1)
AIS Declaring
Less than 3 zeros are received in each of two consecutive 512-bit data
streams.
Less than 3 zeros are received in a 512-bit data
stream.
AIS Clearing
3 or more zeros are received in each of two consecutive 512-bit data
streams.
3 or more zeros are received in a 512-bit data stream.
1. XCLK is derived from MCLK. It is 2.048 MHz in E1 mode.
相關PDF資料
PDF描述
IDT82P2281PF TXRX T1/E1/J1 LONG/SHORT 80-TQFP
IDT82P2282PF TXRX T1/J1/E1 2CHAN 100-TQFP
IDT82P2284BB TXRX T1/J1/E1 4CHAN 208-PBGA
IDT82P2288BBG TXRX OCTAL T1/E1/J1 256-PBGA
IDT82P2521BHG IC LIU E1 21+1CH SHORT 640-PBGA
相關代理商/技術參數(shù)
參數(shù)描述
IDT82P20516DBFG8 制造商:Integrated Device Technology Inc 功能描述:IC LIU T1/E1/J1 16CH SH 484BGA
IDT82P20516DBFGBLANK 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:16-Channel Short Haul E1 Line Interface Unit
IDT82P2281 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:Single T1/E1/J1 Long Haul Short Haul Transceiver
IDT82P2281_09 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:Single T1/E1/J1 Long Haul / Short Haul Transceiver
IDT82P2281PF 功能描述:TXRX T1/E1/J1 LONG/SHORT 80-TQFP RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標準包裝:250 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR)
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*