參數(shù)資料
型號: XRT73L06
廠商: Exar Corporation
英文描述: SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
中文描述: 六通道線路接口單元E3/DS3/STS-1
文件頁數(shù): 42/63頁
文件大小: 348K
代理商: XRT73L06
XRT73L06
REV. 1.0.2
SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
39
5.2
The XRT73L06 offers three loopback modes for diagnostic purposes. The loopback modes are selected via
the RLB_n and LLB_n bits n the Channel control registers select the loopback modes.
5.2.1
ANALOG LOOPBACK
In this mode, the transmitter outputs TTIP_n and TRing_n are internally connected to the receiver inputs
RTIP_n and RRing_n as shown in Figure 30. Data and clock are output at RxClk_n, RxPOS_n and RxNEG_n
pins for the corresponding transceiver. Analog loopback exercises most of the functional blocks of the device.
LOOPBACKS
N
OTES
:
1.
2.
In the Analog loopback mode, data is also output via TTIP_n and TRing_n pins.
Signals on the RTIP_n and RRing_n pins are ignored during analog loopback.
F
IGURE
30. A
NALOG
L
OOPBACK
TRing
TTIP
RRing
RTIP
RxPOS
RxNEG
RxClk
TxNEG
TxClk
TxPOS
HDB3/B3ZS
ENCODER
HDB3/B3ZS
DECODER
TIMING
CONTROL
DATA &
CLOCK
RECOVERY
Tx
Rx
相關(guān)PDF資料
PDF描述
XRT73L06IB SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
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XRT73LC03A 3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
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