參數(shù)資料
型號： XRT91L81IB
廠商： EXAR CORP
元件分類： 數(shù)字傳輸電路
英文描述： 2.488/2.666GBPS OC-48/STM-16 SONET/SDH TRANSCEIVER
中文描述： TRANSCEIVER, PBGA196
封裝： 12 X 12 MM, STBGA-196
文件頁數(shù)： 9/40頁
文件大?。?/td> 264K
代理商： XRT91L81IB
XRT91L81
2.488/2.666GBPS OC-48/STM-16 SONET/SDH TRANSCEIVER
PRELIMINARY
TRANSMITTER SECTION
REV. P1.0.3
7
REFFREQSEL
LVTTL
I
P1
Reference Clock Frequency Select
Hardware Mode
This pin is used to select the frequency of the
REFCLK input to the CMU.
"Low" = 77.76MHz (83.5MHz for FEC)
"High" = 155.52MHz (167MHz for FEC)
VCXO_SEL
LVTTL
I
M6
Selects De-Jitter VCXO Option
Hardware Mode
This pin selects either the normal REFCLK or
the de-jitter VCXO as a reference clock.
"Low" = Normal REFCLK Mode
"High" = De-Jitter VCXO Mode
VCXO_LOCK
LVTTL
O
N8
De-Jitter PLL Lock Detect
If the de-jitter PLL lock detect is enabled with Pin P3 and the
de-jitter VCXO mode is selected by Pin M6, this pin will pull
"High" when the PLL is locked.
"Low" = VCXO out of Lock
"High" = VCXO Locked
VCXO_LOCKEN
LVTTL
I
P3
De-Jitter PLL Lock Detect Enable
Hardware Mode
This pin enables the VCXO lock detect Pin N8
to be active.
"Low" = VCXO_LOCK disabled
"High" = VCXO_LOCK enabled
CPOUT
-
O
P8
Charge Pump Output (for external VCXO)
The nominal output of the charge pump is 250
μ
A
LOOPBW
LVTTL
I
M7
CMU Loop Bandwidth Select
Hardware Mode
This pin is used to select the bandwidth of the
clock multiplier unit of the transmit path to a narrow or wide
band.
"Low" = Narrow Band (1x)
"High" = Wide Band (4x)
TXPCLKOP
TXPCLKON
LVDS
O
P10
P11
Transmit Clock Output (622/666 MHz)
This clock can be used for the downstream device to generate
the TXDI data and TXCLK. This enables the downstream
device and the OC-48 transceiver to be in synchronization.
TXCLKO16P
TXCLKO16N
LVDS
O
N10
N11
Auxillary Clock
155.52(166)MHz auxillary clock derived from CMU output. This
clock can also be used for the downstream device as a refer-
ence for generating the TXDI data and TXCLK. This enables
the downstream device and the OC-48 transceiver to be in syn-
chronization.
TRITXCLKO16
LVTTL
I
M12
Tri-State Enable
Hardware Mode
This pin is used to tri-state the auxillary clock.
"Low" = TXCLKO16 Enabled
"High" = TXCLKO16 Tri-State
N
AME
L
EVEL
T
YPE
P
IN
D
ESCRIPTION
相關(guān)PDF資料
PDF描述
XRT91L82 2.488/2.666 GBPS STS-48/STM-16 SONET/SDH TRANSCEIVER
XRT91L82IB 2.488/2.666 GBPS STS-48/STM-16 SONET/SDH TRANSCEIVER
XRT94L31_07 3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC
XRT94L31 3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER
XRT94L31IB 3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT91L82 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
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(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
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(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
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(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
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
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