參數(shù)資料
型號: DS21352LN+
廠商: Maxim Integrated Products
文件頁數(shù): 86/137頁
文件大?。?/td> 0K
描述: IC TXRX T1 1-CHIP 3.3V 100-LQFP
產(chǎn)品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 90
功能: 單芯片收發(fā)器
接口: HDLC,T1
電路數(shù): 1
電源電壓: 3.14 V ~ 3.47 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
供應商設備封裝: 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
產(chǎn)品目錄頁面: 1429 (CN2011-ZH PDF)
DS21352/DS21552
52 of 137
8.2 PATH CODE VIOLATION COUNT REGISTER (PCVCR)
When the receive side of a framer is set to operate in the ESF framing mode (CCR2.3=1), PCVCR will
automatically be set as a 12–bit counter that will record errors in the CRC6 code words. When set to
operate in the D4 framing mode (CCR2.3=0), PCVCR will automatically count errors in the Ft framing
bit position. Via the RCR2.1 bit, a framer can be programmed to also report errors in the Fs framing bit
position. The PCVCR will be disabled during receive loss of synchronization (RLOS=1) conditions. See
Table 8-2 for a detailed description of exactly what errors the PCVCR counts.
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).
Table 8.2 PATH CODE VIOLATION COUNTING ARRANGEMENTS
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 & Fs patterns
ESF
don’t care
errors in the CRC6 code words
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