參數(shù)資料
型號(hào): XRT82L34
廠商: Exar Corporation
英文描述: Quad T1/E1/J1 Line Transceiver with Clock Recovery and Jitter Attenuator(四 T1/E1/J1線收發(fā)器(帶時(shí)鐘恢復(fù)和振蕩衰減器))
中文描述: 四路T1/E1/J1收發(fā)線收發(fā)器時(shí)鐘恢復(fù)和抖動(dòng)衰減器(四的T1/E1/J1線收發(fā)器(帶時(shí)鐘恢復(fù)和振蕩衰減器))
文件頁(yè)數(shù): 19/50頁(yè)
文件大小: 648K
代理商: XRT82L34
á
XRT82L34
QUAD T1/E1/J1 LINE TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
PRELIMINARY
REV. P1.0.5
17
RESET OPERATION
The XRT82L34 provides both Hardware and Software
resets. In Hardware reset, with pin 6 forced to "0" for
more than 10μs, the entire state of the device includ-
ing the microprocessor R/W registers are reset. In
Software reset, only the state of the interface is reset
(the microprocessor registers are not affected).
RECEIVER MODES OF OPERATION
Through the microprocessor interface or in Hardware
Mode, XRT82L34 offers several alternative receive
modes of operation making it flexible for different ap-
plications as dictated by the system requirements.
RECEIVE DATA INVERT MODE
Receive output data by default is active high at Rx-
POS/RDATA and RxNEG/LCV pins. These signals
can be changed to active Low by setting the DATAP
bit in the interface register. In single rail mode
(DataF=1), LCV output also becomes active Low. Da-
ta invert Mode is only available in Host Mode.
F
IGURE
8. A
NALOG
L
OCAL
L
OOP
-B
ACK
SIGNAL
FLOW
J
ITTER
A
TTENUATOR
SELECTED
&
IN
R
ECEIVE
PATH
Rx
Clock &
Data
Recovery
Decoder
TxPOS
TxNEG
TxClk
RxClk
RxPOS
RxNEG
Tx
Encoder
Timing
Control
TTIP
TRing
RTIP
RRing
JA
F
IGURE
9. A
NALOG
L
OCAL
L
OOP
-B
ACK
SIGNAL
FLOW
J
ITTER
A
TTENUATOR
SELECTED
&
IN
TRANSMIT
PATH
Rx
Clock &
Data
Recovery
Decoder
TxPOS
TxNEG
TxClk
RxClk
RxPOS
RxNEG
Tx
Encoder
Timing
Control
JA
TTIP
TRing
RTIP
RRing
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