參數資料
型號： DS21Q41BT
廠商： DALLAS SEMICONDUCTOR
元件分類： Digital Transmission Controller
英文描述： DATACOM, FRAMER, PQFP128
封裝： TQFP-128
文件頁數： 25/61頁
文件大?。?/td> 714K
代理商： DS21Q41BT
DS21Q41B
31 of 61
PCVCR1: PATH VIOLATION COUNT REGISTER 1 (Address=25 Hex)
PCVCR2: PATH VIOLATION COUNT REGISTER 2 (Address=26 Hex)
(MSB)
(LSB)
(note 1)
CRC/FB11
CRC/FB10
CRC/FB9
CRC/FB8
PCVCR1
CRC/FB7
CRC/FB6
CRC/FB5
CRC/FB4
CRC/FB3
CRC/FB2
CRC/FB1
CRC/FB0
PCVCR2
SYMBOL
POSITION
NAME AND DESCRIPTION
CRC/FB11
PCVCR1.3
MSB of the 12-bit CRC6 error or frame bit error count (note 2)
CRC/FB0
PCVCR2.0
LSB of the 12-bit CRC6 error or frame bit error count (note 2)
NOTES:
1. The upper nibble of the counter at address 25 is used by the Multiframes Out of Sync Count Register.
2. PCVCR counts either errors in CRC code words (in the ESF framing mode; CCR2.3=1) or errors in
the framing bit position (in the D4 framing mode; CCR2.3=0).
PATH CODE VIOLATION COUNTING ARRANGEMENTS Table 5-2
FRAMING MODE
(CCR2.3)
COUNT Fs ERRORS?
(RCR2.1)
WHAT IS COUNTED IN THE PCVCRs
D4
no
errors in the Ft pattern
D4
yes
errors in both the Ft and Fs patterns
ESF
don't care
errors in the CRC6 code words
5.3 Multiframes Out of Sync Count Register (MOSCR)
Normally the MOSCR is used to count the number of multiframes that the receive synchronizer is out of
sync (RCR2.0=1). This number is useful in ESF applications needing to measure the parameters Loss Of
Frame Count (LOFC) and ESF Error Events as described in AT&T publication TR54016. When the
MOSCR is operated in this mode, it is not disabled during receive loss of synchronization (RLOS=1)
conditions. The MOSCR has alternate operating mode whereby it will count either errors in the Ft
framing pattern (in the D4 mode) or errors in the FPS framing pattern (in the ESF mode). When the
MOSCR is operated in this mode, it is disabled during receive loss of synchronization (RLOS=1)
conditions. See Table 5-3 for a detailed description of what the MOSCR is capable of counting.
相關PDF資料
PDF描述
DS21Q42TN DATACOM, FRAMER, PQFP128
DS21Q42T DATACOM, FRAMER, PQFP128
DS21Q43AT DATACOM, FRAMER, PQFP128
DS21Q44T DATACOM, FRAMER, PQFP128
DS21Q44TN DATACOM, FRAMER, PQFP128
相關代理商/技術參數
參數描述
DS21Q41-BT 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
DS21Q41BT+ 功能描述:網絡控制器與處理器 IC RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21Q41BT+T 功能描述:網絡控制器與處理器 IC RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21Q41BTN 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Quad T1 Framer
DS21Q41-BTN 功能描述:網絡控制器與處理器 IC RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
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