參數(shù)資料
型號: DS21552LN
廠商: Maxim Integrated Products
文件頁數(shù): 85/137頁
文件大?。?/td> 0K
描述: IC TXRX T1 1-CHIP 5V 100-LQFP
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
產(chǎn)品變化通告: Product Discontinuation 20/Feb/2012
標準包裝: 90
功能: 單芯片收發(fā)器
接口: E1,HDLC,J1,T1
電路數(shù): 1
電源電壓: 4.75 V ~ 5.25 V
電流 - 電源: 75mA
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 100-LQFP
供應(yīng)商設(shè)備封裝: 100-LQFP(14x14)
包裝: 托盤
包括: DSX-1 和 CSU 線路補償發(fā)生器,HDLC 控制器,帶內(nèi)回路代碼發(fā)生器和檢測器
DS21352/DS21552
51 of 137
8.1 LINE CODE VIOLATION COUNT REGISTER (LCVCR)
Line Code Violation Count Register 1 (LCVCR1) is the most significant word and LCVCR2 is the least
significant word of a 16–bit counter that records code violations (CVs). CVs are defined as Bipolar
Violations (BPVs) or excessive zeros. See Table 8-1 for details of exactly what the LCVCRs count. If the
B8ZS mode is set for the receive side via CCR2.2, then B8ZS code words are not counted. This counter is
always enabled; it is not disabled during receive loss of synchronization (RLOS=1) conditions.
LCVCR1: LINE CODE VIOLATION COUNT REGISTER 1 (Address = 23 Hex)
LCVCR2: LINE CODE VIOLATION COUNT REGISTER 2 (Address = 24 Hex)
(MSB)
(LSB)
LCV15
LCV14
LCV13
LCV12
LCV11
LCV10
LCV9
LCV8
LCVCR1
LCV7
LCV6
LCV5
LCV4
LCV3
LCV2
LCV1
LCV0
LCVCR2
SYMBOL
POSITION
NAME AND DESCRIPTION
LCV15
LCVCR1.7
MSB of the 16–bit code violation count
LCV0
LCVCR2.0
LSB of the 16–bit code violation count
Table 8-1 LINE CODE VIOLATION COUNTING ARRANGEMENTS
COUNT EXCESSIVE ZEROS
(RCR1.7)
B8ZS ENABLED
(CCR2.2)
WHAT IS COUNTED
IN THE LCVCRs
no
BPVs
yes
no
BPVs + 16 consecutive zeros
no
yes
BPVs (B8ZS code words not counted)
yes
BPV’s + 8 consecutive zeros
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