參數(shù)資料
型號： XRT91L80
廠商： Exar Corporation
英文描述： 2.488/2.666 GBPS STS-48/STM-16 SONET/SDH TRANSCEIVER
中文描述： 2.488/2.666 Gbps的STS-48/STM-16的SONET / SDH收發(fā)器
文件頁數(shù)： 16/45頁
文件大?。?/td> 359K
代理商： XRT91L80
XRT91L80
2.488/2.666 GBPS STS-48/STM-16 SONET/SDH TRANSCEIVER
PRELIMINARY
xr
REV. P1.1.0
14
2.0
RECEIVE SECTION
The receive section of XRT91L80 includes the differential inputs RXIP/N, followed by the clock and data
recovery unit (CDR) and receive serial-to-parallel converter (SIPO). The receiver accepts the high speed Non-
Return to Zero (NRZ) serial data at 2.488/2.666 Gbps through the differential input interfaces RXIP/N. The
clock and data recovery unit recovers the high-speed receive clock from the incoming scrambled NRZ data
stream. The recovered serial data is converted into 4-bit-wide 622.08/666.51 Mbps parallel data and presented
to the RXD[3:0]P/N LVDS parallel interface. A divide-by-4 version of the high-speed recovered clock,
RXPCLKOP/N, is used to synchronize the transfer of the 4-bit RXDO[3:0]P/N data with the receive portion of
the upstream device. Upon initialization or loss of signal or loss of lock the 77.76/155.52 MHz (83.31/166.63
MHz) external local reference clock is used to start-up the clock recovery phase-locked loop for proper
operation. A special loop-back feature can be configured when parallel remote loopback (RLOOPP) is used in
conjunction with de-jittered loop-time mode that allows the re-transmitted data to comply with ITU and Bellcore
jitter generation specifications.
2.1
Receive Serial Input
The receive serial CML inputs are applied to RXIP/N. The receive serial inputs can be AC or DC coupled to an
optical module or an electrical interface. A simplified AC coupled block diagram is shown in Figure 4.
N
OTE
:
Some optical modules integrate AC coupled capacitors within the module. If so, the external AC coupled capacitors
are not necessary and can be excluded.
The 2.488/2.666 Gbps high-speed differential CML RXIP/N input swing characteristics is shown in Table 2.
F
IGURE
4. R
ECEIVE
S
ERIAL
I
NPUT
I
NTERFACE
B
LOCK
T
ABLE
2: D
IFFERENTIAL
CML I
NPUT
S
WING
P
ARAMETERS
P
ARAMETER
D
ESCRIPTION
M
IN
T
YP
M
AX
U
NITS
V
INDIFF
Differential Input Voltage Swing
200
1000
mV
V
INSE
Single-Ended Input Voltage Swing
100
600
mV
V
INBIAS
Input Bias Range (AC Coupled)
1.0
1.4
V
R
DIFF
Differential Input Resistance
75
125
XRT91L80
STS-48/
STM-16
Transceiver
Optical Module
0.1
μ
F
0.1
μ
F
RXIP
RXIN
Optical Fiber
相關(guān)PDF資料
PDF描述
XRT91L80_0507 2.488/2.666 GBPS STS-48/STM-16 SONET/SDH TRANSCEIVER
XRT91L80IB 2.488/2.666 GBPS STS-48/STM-16 SONET/SDH TRANSCEIVER
XRT91L81 2.488/2.666GBPS OC-48/STM-16 SONET/SDH TRANSCEIVER
XRT91L81IB 2.488/2.666GBPS OC-48/STM-16 SONET/SDH TRANSCEIVER
XRT91L82 2.488/2.666 GBPS STS-48/STM-16 SONET/SDH TRANSCEIVER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT91L80_0507 制造商:EXAR 制造商全稱:EXAR 功能描述:2.488/2.666 GBPS STS-48/STM-16 SONET/SDH TRANSCEIVER
XRT91L80ES 功能描述:總線收發(fā)器 Transceiver RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel
XRT91L80IB 功能描述:總線收發(fā)器 Transceiver RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel
XRT91L80IB-F 功能描述:總線收發(fā)器 Transceiver RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel
XRT91L81 制造商:EXAR 制造商全稱:EXAR 功能描述:2.488/2.666GBPS OC-48/STM-16 SONET/SDH TRANSCEIVER
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