參數(shù)資料
型號(hào)： XRT91L32IQ
廠商： Exar Corporation
文件頁(yè)數(shù)： 37/37頁(yè)
文件大?。?/td> 0K
描述： IC TXRX SONET/SDH 8BIT 100QFP
產(chǎn)品變化通告： XRT91L32IQ(TR) Obsolescence 12/Oct/2010
標(biāo)準(zhǔn)包裝： 90
類型： 收發(fā)器
規(guī)程： SONET/SDH
電源電壓： 3.3V
安裝類型： 表面貼裝
封裝/外殼： 100-BQFP
供應(yīng)商設(shè)備封裝： 100-QFP（14x20）
包裝： 托盤
xr
XRT91L32
REV. 1.0.3
STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
7
TXPCLK_O
LVTTL
O
82
Transmit Parallel Clock Output (77.76/19.44 MHz)
Transmit Parallel Clock Output Operation
This pin will output a 77.76 MHz (STS-12/STM-4) or 19.44 MHz
(STS-3/STM-1) clock output reference for the 8-bit parallel
transmit data input TXDI[7:0]. This clock is used by the framer/
mapper device to present the TXDI[7:0] data which the
XRT91L32 will latch on the rising edge of this clock. This
enables the framer/mapper device and the XRT91L32 trans-
ceiver to be in synchronization.
REFCLKP
REFCLKN
LVPECL Diff
I
29
30
Reference Clock Input (77.76 MHz or 19.44 MHz)
This differential clock input reference is used for the transmit
clock multiplier unit (CMU) and clock data recovery (CDR) to
provide the necessary high speed clock reference for this
device. It will accept either a 77.76 MHz or a 19.44 MHz Differ-
ential LVPECL clock source. Pin CMUFREQSEL determines
the value used as the reference. See Pin CMUFREQSEL for
more details. REFCLKP/N inputs are internally biased to 1.65V.
NOTE:
In the event that TTLREFCLK LVTTL input is used
instead of these differential inputs for clock reference,
the REFCLKP should be tied to ground.
TTLREFCLK
LVTTL
I
56
Auxillary Reference Clock Input (77.76 MHz or 19.44 MHz)
This LVTTL clock input reference is used for the transmit clock
multiplier unit (CMU) and clock data recovery (CDR) to provide
the necessary high speed clock reference for this device. It will
accept either a 77.76 MHz or a 19.44 MHz LVTTL clock source.
Pin CMUFREQSEL determines the value used as the refer-
ence. See Pin CMUFREQSEL for more details.
NOTE: In the event that REFCLKP/N differential inputs is used
instead of this LVTTL input for clock reference, the
TTLREFCLK should be tied to ground.
TRANSMITTER SECTION
NAME
LEVEL
TYPE
PIN
DESCRIPTION
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XRT91L32IQ-F 功能描述:總線收發(fā)器 8-Bit TTL 3.3V temp -45 to 85C;UART 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
XRT91L32IQTR 功能描述:LIN 收發(fā)器 PHY Transceiver RoHS:否 制造商:NXP Semiconductors 工作電源電壓: 電源電流: 最大工作溫度: 封裝 / 箱體:SO-8
XRT91L32IQTR-F 功能描述:LIN 收發(fā)器 PHY Transceiver RoHS:否 制造商:NXP Semiconductors 工作電源電壓: 電源電流: 最大工作溫度: 封裝 / 箱體:SO-8
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XRT91L33AIG-F 制造商:Exar Corporation 功能描述:CDR 155.52Mbps/622.08Mbps SONET/SDH 20-Pin TSSOP
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