參數(shù)資料
型號： XRT91L82
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)： 31/59頁
文件大?。?/td> 414K
代理商： XRT91L82
xr
REV. P1.0.5
PRELIMINARY
2.488/2.666 GBPS STS-48/STM-16 SONET/SDH TRANSCEIVER
XRT91L82
28
3.8
During Host Mode operation, RXCAP1N becomes the charge pump output CP_OUT. As shown in Figure 14,
the internal charge pump is used to drive an external loop filter and external VCXO. The charge pump current
is fixed at 250uA. Figure 15 is a simplified block diagram of the external loop filter and recommended values.
F
IGURE
15. S
IMPLIFIED
D
IAGRAM
OF
THE
E
XTERNAL
L
OOP
F
ILTER
External Loop Filter (Host Mode Only)
3.9
The 2.488/2.666 Gbps transmit serial output is avaliable on TXOP/N pins. The transmit serial output can be AC
or DC coupled to an optical module or electrical interface. A simplified AC coupling block diagram is shown in
Figure 16.
Transmit Serial Output Control
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 output TXOP/N swing mode can be controlled through an
pin called TXSWING. Setting this pin "Low" enables Low Swing Mode and lowers power consumption. Setting
this pin "High" configures the transmit serial output for High Swing Mode. Figure 17 shows the CML differential
voltage swing.
F
IGURE
16. T
RANSMIT
S
ERIAL
O
UTPUT
I
NTERFACE
BLOCK
T
ABLE
12: D
IFFERENTIAL
CML O
UTPUT
S
WING
P
ARAMETERS
S
IGNAL
T
YPE
P
ARAMETER
M
IN
(mV)
M
AX
(mV)
CML S
ERIAL
V
OLTAGE
O
UTPUT
TXSWING S
ETTING
(100
L
INE
TO
L
INE
)
Clock
V
OUTDIFF
700
1400
Differential Voltage Swing
High Swing Mode
Clock
V
OUTSE
350
700
Single-Ended Voltage Swing
High Swing Mode
Data
V
OUTDIFF
800
1400
Differential Voltage Swing
High Swing Mode
Data
V
OUTSE
400
700
Single-Ended Voltage Swing
High Swing Mode
300pF
1uF
CP
OUT
VCXO
4.02k
XRT91L82
STS-48/
STM-16
Transceiver
Optical Module
0.1
μ
F
0.1
μ
F
TXOP
TXON
Optical Fiber
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT91L82ES 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
XRT91L82IB 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
XRT91L82IB-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
XRT94L31 制造商:EXAR 制造商全稱:EXAR 功能描述:3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC
XRT94L31_07 制造商:EXAR 制造商全稱:EXAR 功能描述:3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC
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