參數(shù)資料
型號: DS2196
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): 57/157頁
文件大?。?/td> 734K
代理商: DS2196
DS2196
57 of 157
Table 7-1:
RECEIVE T1 LEVEL INDICATION
RL1
0
0
1
1
RL0
0
1
0
1
TYPICAL LEVEL RECEIVED
+2 dB to –7.5 dB
–7.5 dB to –15 dB
–15 dB to –22.5 dB
less than –22.5 dB
NOTE:
The RAIS-CI bit is qualified with the RBL status bit (SR1A.3 and SR1B.3). Hence the RAIS-CI status
bit will not be set unless the RBL status bit is set. If the RBL bit is set and the RAIS-CI bit has
transitioned from a 1 to a 0 (i.e., it has cleared), it is recommended that the software wait at lest 1.5
seconds and then read the RAIS-CI bit again to make sure that the alarm has indeed cleared.
SR1A: STATUS REGISTER 1 FRAMER A (Address = 20 Hex)
(MSB)
LUP
(LSB)
RLOS
LDN
LOTC
LSPARE
RBL
RYEL
FRCL
SYMBOL
POSITION
NAME AND DESCRIPTION
LUP
SR1A.7
Loop Up Code Detected.
Set when the loop up code as
defined in the RUPCD register is being received. See Section
12 for details.
Loop Down Code Detected.
Set when the loop down code as
defined in the RDNCD register is being received. See Section
12 for details.
Loss of Transmit Clock.
Set when the TCLKA pin has not
transitioned for one channel time (or 5.2 s). Will force the
RLOSA/LOTCA pin high if enabled via CCR1A.6. Also will
force transmit side formatter to switch to MCLK if so enabled
via TCR1A.7.
Spare Code Detected.
Set when the spare code as defined in
the RSPARE register is being received. See Section 12 for
details.
Receive Blue Alarm.
Set when an unframed all 1’s code is
received at RPOSIA and RNEGIA.
Receive Yellow Alarm.
Set when a yellow alarm is received
at RPOSIA and RNEGIA.
Framer Receive Carrier Loss.
Set when a red alarm is
received at RPOSIA and RNEGIA.
Receive Loss of Sync.
Set when the device is not
synchronized to the receive T1 stream.
LDN
SR1A.6
LOTC
SR1A.5
LSPARE
SR1A.4
RBL
SR1A.3
RYEL
SR1A.2
FRCL
SR1A.1
RLOS
SR1A.0
相關(guān)PDF資料
PDF描述
DS2196L Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
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
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