參數(shù)資料
型號： LXT386
廠商： Intel Corp.
英文描述： QUAD T1/E1/J1 Transceiver
中文描述： 四T1/E1/J1收發(fā)器
文件頁數(shù)： 31/78頁
文件大?。?/td> 500K
代理商： LXT386
QUAD T1/E1/J1 Transceiver
—
LXT386
Datasheet
31
3.7
Loopbacks
The LXT386 offers three loopback modes for diagnostic purposes. In hardware mode, the loopback
mode is selected with the LOOPn pins. In software mode, the ALOOP, DLOOP and RLOOP
registers are employed.
3.7.1
Analog Loopback
When selected, the transmitter outputs (TTIP & TRING) are connected internally to the receiver
inputs (RTIP & RRING) as shown in
Figure 9
. Data and clock are output at RCLK, RPOS &
RNEG pins for the corresponding transceiver. Note that signals on the RTIP & RRING pins are
ignored during analog loopback.
Figure 8. Jitter Attenuator Loop
FIFO
DPLL
IN CK
OUT CK
TPOS
RPOSi
TNEG
RNEGi
TCLK
RCLKi
JASEL0-1
TPOSo
RPOS
TNEGo
RNEG
TCLK
RCLK
JASEL0-1
FIFO64
JACF
MCLK
GCR control bits
x 32
IN
OUT
Figure 9. Analog Loopback
Timing &
Control
Timing
Recovery
TTIP
TRING
RTIP
RRING
H
E
RCLK
RPOS
RNEG
TCLK
TPOS
TNEG
H
D
* If Enabled
JA*
JA*
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相關代理商/技術參數(shù)
參數(shù)描述
LXT386BE 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PCM TRANSCEIVER|QUAD|CEPT PCM-30/E-1|CMOS|BGA|160PIN|PLASTIC
LXT386LE 制造商:LEVEL1 功能描述:
LXT388LE 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PCM TRANSCEIVER|DUAL|CEPT PCM-30/E-1|CMOS|QFP|100PIN|PLASTIC
LXT400 制造商:LVL1 制造商全稱:LVL1 功能描述:All Rate Extended Range Switched 56/DDS Transceiver
LXT400JE 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Transceiver Circuit For Telecommunications
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