參數(shù)資料
型號(hào): LXT6155LE
元件分類(lèi): 通信、網(wǎng)絡(luò)模塊及開(kāi)發(fā)工具
英文描述: Telecomm/Datacomm
中文描述: 電信/數(shù)據(jù)通信
文件頁(yè)數(shù): 24/48頁(yè)
文件大?。?/td> 1105K
代理商: LXT6155LE
Intel
LXT6155 155 Mbps SDH/SONET/ATM Transceiver
24
Datasheet
2.8
Loopback Modes
The Intel
LXT6155 provides two loopback modes that can be executed in either hardware or
software mode: local loopback and remote loopback. In remote loopback mode, the crystal
reference clock is used to center the receive PLL to prevent illegal clock looping.
2.8.1
Local Loopback
Local loopback routes the transmit line output signals (TTIP and TRING) back to the receive line
inputs (RTIP and RRING). In this mode, the line transmit output signals are active (see
Figure 14
).
Figure 12. Serial Interface
Figure 13. Parallel Interface
Nevada
Overhead
Terminator/ATM UNI
DATA_OUT<0:1>
CLK_OUT<0:1>
TPOS, TNEG
TSICLKP,
TSICLKN
4
DATA_IN<0:1>
CLK_IN<0:1>
4
RPOS, RNEG
RSOCLKP,
RSOCLKN
LOS
CMIERR, LOS
4
CS
SDI
SDO
SCLK
μ
Processor (optional)
Data I/O
Clock
Chip Select
9
Nevada
TPID<0:7>
TPICLK
Overhead
Terminator/ATM UNI
DATA_OUT<0:7>
BYTE_TCLK
Chip Select
Data I/O
Clock
CS
SDI
SDO
SCLK
μ
Processor (optional)
DATA_IN<0:7>
BYTE_RCLK
RPOD<0:7>
RPOCLK
9
LOS, RIFP
LOS, ROFP/
CMIERR
2
4
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