參數(shù)資料
型號(hào)： XRT91L31
廠商： Exar Corporation
英文描述： STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
中文描述： STS-12/STM-4或STS-3/STM-1的SONET / SDH收發(fā)器
文件頁(yè)數(shù)： 18/41頁(yè)
文件大?。?/td> 356K
代理商： XRT91L31
XRT91L31
STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
xr
REV. 1.0.2
16
T
ABLE
6: C
LOCK
AND
D
ATA
R
ECOVERY
U
NIT
P
ERFORMANCE
1
These reference clock jitter limits are required for the outputs to meet SONET system level jitter requirements (<10 mUI
rms
).
2
Required to meet SONET output frequency stability requirements.
2.3.1
Optionally, the internal CDR unit can be disabled and bypassed in lieu of an externally recovered clock.
Asserting the CDRDIS "High" disables the internal Clock and Data Recovery unit and the received serial data
bypasses the integrated CDR block. RXINP/N is then sampled on the rising edge of the externally recovered
differential clock XRXCLKIP/N coming from the optical module or an external clock recovery unit. Figure 5
shows the possible internal paths of the recovered clock and data.
Internal Clock and Data Recovery Bypass
N
AME
P
ARAMETER
M
IN
T
YP
M
AX
U
NITS
REF
DUTY
Reference clock duty cycle
40
60
%
REF
JIT
Reference clock jitter (rms) with 19.44 MHz reference
1
5
ps
REF
JIT
Reference clock jitter (rms) with 77.76 MHz reference
1
13
ps
REF
TOL
Reference clock frequency tolerance
2
-20
+20
ppm
OCLK
FREQ
Frequency output
620
624
MHz
OCLK
DUTY
Clock output duty cycle
40
60
%
F
IGURE
5. I
NTERNAL
C
LOCK
AND
D
ATA
R
ECOVERY
B
YPASS
RXIP
RXIN
M
CDR
M
CDRDIS
Clk
Data
XRXCLKIP
XRXCLKIN
DATA
CLOCK
SIPO
Div by 8 CLOCK
Parallel DATA
8
相關(guān)PDF資料
PDF描述
XRT91L31IQ STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
XRT91L32 STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
XRT91L32IQ-F STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
XRT91L80 2.488/2.666 GBPS STS-48/STM-16 SONET/SDH TRANSCEIVER
XRT91L80_0507 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
XRT91L31_08 制造商:EXAR 制造商全稱:EXAR 功能描述:STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
XRT91L31ES 功能描述:總線收發(fā)器 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(shí)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
XRT91L31IQ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC SONET/SDH, FULL DPLX 3.3V I/O, LOS, CMU RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
XRT91L31IQ-F 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 8-Bit TTL 3.3V temp -45 to 85C;UART RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
XRT91L31IQ-F 制造商:Exar Corporation 功能描述:SONET Transceiver IC
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