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  • 參數(shù)資料
    型號: SY87813LHG
    廠商: Micrel Inc
    文件頁數(shù): 9/15頁
    文件大小: 0K
    描述: IC CLOCK/DATA REC 1.3GBPS 32TQFP
    標(biāo)準(zhǔn)包裝: 250
    系列: AnyRate®
    類型: 時鐘和數(shù)據(jù)恢復(fù)(CDR),多路復(fù)用器
    PLL:
    主要目的: 以太網(wǎng),SONET/SDH,ATM 應(yīng)用
    輸入: PECL
    輸出: PECL
    電路數(shù): 1
    比率 - 輸入:輸出: 1:3
    差分 - 輸入:輸出: 是/是
    頻率 - 最大: 1.3Gbps
    電源電壓: 3.15 V ~ 3.45 V
    工作溫度: -40°C ~ 85°C
    安裝類型: 表面貼裝
    封裝/外殼: 32-TQFP 裸露焊盤
    供應(yīng)商設(shè)備封裝: 32-EPAD-TQFP
    包裝: 托盤
    其它名稱: 576-1586
    Micrel, Inc.
    SY87813L
    November 2006
    3
    M9999-112806-B
    hbwhelp@micrel.com or (408) 955-1690
    Pin Description
    Pin Number
    Pin Name
    1
    REFCLKSEL
    REFCLK Select (TTL Input). This input selects the single-ended TTL REFCLK input or the
    differential PECL REFCLKP/REFCLKN inputs. REFCLKSEL = HIGH selects PECL inputs.
    2
    3
    RDINP,
    RDINN
    Serial Data Input. Differential PECL: These built-in line receiver inputs are connected to the
    differential receive serial data stream. An internal receive PLL recovers the embedded clock
    (RCLK) and data (RDOUT) information. The incoming data rate can be within one of eight
    frequency ranges depending upon the state of the FREQSEL pins. See “Frequency
    Selection” Table.
    4
    6
    7
    FREQSEL1
    FREQSEL2
    FREQSEL3
    Frequency Select. TTL Inputs: These inputs select the output clock frequency range as
    shown in the “Frequency Selection” Table.
    5
    28
    29
    REFCLK,
    REFCLKP,
    REFCLKN
    Reference Clock. (Input): These inputs are used as the reference for the internal frequency
    synthesizer and the “training” frequency for the receiver PLL to keep it centered in the
    absence of data coming in on the RDIN inputs. REFCLK is single-ended TTL and REFCLKP
    and REFCLKN are differential PECL inputs selected by the REFCLKSEL pin
    26
    CD
    Carrier Detect. PECL Input: This input controls the recovery function of the Receive PLL and
    can be driven by the carrier detect output of optical modules or from external transition
    detection circuitry. When this input is HIGH, the input data stream (RDIN) is recovered
    normally by the Receive PLL. When this input is LOW the data on the inputs RDIN will be
    internally forced to a constant LOW, the data outputs RDOUT will remain LOW, the Link Fault
    Indicator output LFIN forced LOW and the clock recovery PLL forced to lock onto the clock
    frequency generated from REFCLK.
    8
    NC
    No connect.
    9
    10
    PLLSP
    PLLSN
    Clock Synthesis PLL Loop Filter: External loop filter pins for the clock synthesis PLL.
    11
    GNDA
    Analog Ground.
    12, 13
    GND
    Ground. Ground pin and exposed pad must be connected to the same ground plane.
    15
    14
    PLLRP
    PLLRN
    Clock Recovery PLL Loop Filter. External loop filter pins for the receiver PLL.
    16
    TCLKSEL
    Clock Select. TTL Input: This input is used to select either the recovered clock of the receiver
    PLL (TCLKSEL = HIGH) or the clock of the frequency synthesizer (TCLKSEL = LOW) to the
    TCLK outputs.
    18
    17
    TCLKP,
    TCLKN
    Clock Output (Differential PECL): The PECL 100k outputs represent either the recovered
    clock (TCLKSEL = HIGH) used to sample the recovered data (RDOUT) or the transmit clock
    of the frequency synthesizer (TCLKSEL = LOW). These outputs must be terminated with 50
    to VCC-2V or equivalent. This applies even if these outputs are not used.
    19, 22
    VCCO
    Output Supply Voltage. Bypass with 0.1F//0.01F low ESR capacitors as close to VCC pins
    as possible.
    (1)
    21
    20
    RCLKP,
    RCLKN
    Clock Output (Differential PECL): These PECL 100k outputs represent the recovered clock
    used to sample the recovered data (RDOUT).
    24
    23
    RDOUTP
    RDOUTN
    Receive Data Output (Differential PECL): These PECL 100k outputs represent the recovered
    data from the input data stream (RDIN). This recovered data is specified against the rising
    edge of RCLK. These outputs must be terminated with 50 to VCC-2V or equivalent. This
    applies even if these outputs are not used.
    32
    25
    DIVSEL1
    DIVSEL2
    Divider Select. TTL Inputs: These inputs select the ratio between the output clock frequency
    (RCLK/TCLK) and the REFCLK input frequency as shown in the “Reference Frequency
    Selection” Table.
    Note:
    1. VCC, VCCA, VCCO must be the same value.
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