參數(shù)資料
型號(hào): DS2196L
元件分類: 通信及網(wǎng)絡(luò)
英文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
文件頁數(shù): 66/157頁
文件大?。?/td> 734K
代理商: DS2196L
DS2196
66 of 157
Table 8-1:
LINE CODE VIOLATION COUNTING ARRANGEMENTS
COUNT EXCESSIVE
ZEROS
(RCR1.7)
no
yes
B8ZS ENABLED
(CCR2.2)
WHAT IS COUNTED
IN THE LCVCRs
no
no
BPVs
BPVs + 16 consecutive
zeros
BPVs (B8ZS code words
not counted)
BPV’s + 8 consecutive
zeros
no
yes
yes
yes
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.
PCVCR1A: PATH VIOLATION COUNT REGISTER 1 FRAMER A (Address = 25 Hex)
PCVCR2A: PATH VIOLATION COUNT REGISTER 2 FRAMER A (Address = 26 Hex)
PCVCR1B: PATH VIOLATION COUNT REGISTER 1 FRAMER B (Address = C5 Hex)
PCVCR2B: PATH VIOLATION COUNT REGISTER 2 FRAMER B (Address = C6 Hex)
(MSB)
(note 1)
(LSB)
CRC/
FB8
CRC/
FB0
(note 1)
(note 1)
(note 1)
CRC/
FB11
CRC/
FB3
CRC/
FB10
CRC/
FB2
CRC/
FB9
CRC/
FB1
PCVCR1
CRC/
FB7
CRC/
FB6
CRC/
FB5
CRC/
FB4
PCVCR2
SYMBOL
POSITION
NAME AND DESCRIPTION
CRC/FB11
PCVCR1.3
MSB of the 12–Bit CRC6 Error or Frame Bit Error Count
(note #2)
LSB of the 12–Bit CRC6 Error or Frame Bit Error Count
(note #2)
CRC/FB0
PCVCR2.0
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).
相關(guān)PDF資料
PDF描述
DS2196LN Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
DS21Q43AT Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
DS21Q43ATN Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
DS21Q44 Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
DS21Q44T Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
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