參數(shù)資料
型號： T7230A
廠商： Lineage Power
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)： 76/110頁
文件大?。?/td> 752K
代理商： T7230A
Preliminary Data Sheet
T7230A Primary Access Framer/Controller
June 1997
72
Lucent Technologies Inc.
Register Structure
(continued)
Status/Counter Registers
(continued)
Facility Alarm Condition Register (SR1)
The bits in the facility alarm condition register (SR1) indicate alarm state of the receive framer section. Interrupts
from this register are generated once at the beginning of the alarm condition. If the alarm condition is still present at
the time of the read, the bit will remain in the 1 state for the duration of the alarm condition. If the alarm condition is
no longer present at the time of the read, then the bit is cleared on read.
Table 38. Facility Alarm Condition (SR1)
Bits
0
Description
Loss of Frame Alignment (LFA).
A 1 indicates the receive framer is in a loss of frame alignment and
is currently searching for a new alignment.
Loss of Signaling Superframe Alignment (LSFA).
A 1 indicates the receive framer is in a loss of
signaling multiframe alignment in the DS1 framing formats. A search for a new signaling superframe
alignment starts once frame alignment is established. This bit is 0 in the CEPT mode.
Alarm Indication Signal (AIS).
A 1 indicates the receive framer is currently receiving an AIS pattern
from its remote line end.
Loss of Frame Alignment Since Last Read (LFALR).
A 1 indicates that the LFA state indicated in bit
0 of this register is the same LFA state from the previous read. The transition from the 0 state to the 1
state in this bit will
not
generate an interrupt.
Loss of Time Slot 0 CRC-4 Multiframe Alignment (LTS0MFA).
A 1 indicates the receive framer is in
a loss of time slot 0 CRC-4 multiframe alignment in the CEPT mode. A search for a new CRC-4
multiframe alignment starts once primary basic frame alignment is found. This bit is 0 when receive
CRC-4 checking is disabled. This bit is 0 in the DS1 mode.
Loss of Time Slot 16 Signaling Multiframe Alignment (LTS16MFA).
A 1 indicates the receive framer
is in a loss of time slot 16 signaling multiframe alignment in the CEPT mode. A search for a new time
slot 16 signaling multiframe alignment starts once frame alignment is established. This bit is 0 when the
T7230A is programmed for transparent mode (TSIG = 1). This bit is 0 in the DS1 mode.
Unavailable State (UASTATE).
A 1 indicates the receive framer has detected at least ten consecutive
severely errored seconds without seeing ten consecutive seconds not errored. Upon detecting the ten
consecutive nonseverely errored seconds, the receive framer will clear this bit.
Time Slot 16 Alarm Indication Signal (AIS).
A 1 indicates the receive framer is currently receiving an
AIS pattern in time slot 16 from its remote line end. This unframed AIS is detected only in CEPT mode
when signaling is enabled.
1
2
3
4
5
6
7
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
T-7230A--ML 制造商:Rochester Electronics LLC 功能描述:- Bulk
T7230-ML3 制造商:AGERE 功能描述:
T7-231A1 功能描述:撥動(dòng)開關(guān) ON NONE OFF 2 Pole Standard Bat Handle RoHS:否 制造商:OTTO 觸點(diǎn)形式: 開關(guān)功能: 電流額定值: 電壓額定值 AC: 電壓額定值 DC: 功率額定值: 端接類型: 安裝風(fēng)格: 端子密封: 觸點(diǎn)電鍍: 照明:
T7-231A2 制造商:OTTO Engineering Inc 功能描述:2POLE, SOLDER, STD,
T7-231A2D 功能描述:撥動(dòng)開關(guān) ON NONE OFF 2 Pole Standard LeverLock RoHS:否 制造商:OTTO 觸點(diǎn)形式: 開關(guān)功能: 電流額定值: 電壓額定值 AC: 電壓額定值 DC: 功率額定值: 端接類型: 安裝風(fēng)格: 端子密封: 觸點(diǎn)電鍍: 照明:
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