參數(shù)資料
型號(hào): XRT83VSH28IB-F
廠商: Exar Corporation
文件頁(yè)數(shù): 45/75頁(yè)
文件大?。?/td> 0K
描述: IC LIU SH E1 OCTAL 225BGA
標(biāo)準(zhǔn)包裝: 84
類型: 線路接口裝置(LIU)
驅(qū)動(dòng)器/接收器數(shù): 8/8
規(guī)程: T1,E1,J1
電源電壓: 3.14 V ~ 3.47 V
安裝類型: 表面貼裝
封裝/外殼: 225-BGA
供應(yīng)商設(shè)備封裝: 225-BGA(19x19)
包裝: 托盤(pán)
其它名稱: 1016-1482
XRT83VSH28IB-F-ND
XRT83VSH28
I
REV. 2.0.0
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
GENERAL DESCRIPTION................................................................................................. 1
APPLICATIONS ............................................................................................................................................... 1
FIGURE 1. BLOCK DIAGRAM OF THE XRT83VSH28 E1 LIU (HOST MODE)........................................................................................ 1
FIGURE 2. BLOCK DIAGRAM OF THE XRT83VSH28 E1 LIU (HARDWARE MODE) ............................................................................... 2
FEATURES ..................................................................................................................................................... 3
ORDERING INFORMATION .................................................................................................................... 3
PIN DESCRIPTION BY FUNCTION................................................................................... 5
RECEIVE SECTION ......................................................................................................................................... 5
TRANSMIT SECTION ....................................................................................................................................... 8
PARALLEL MICROPROCESSOR INTERFACE..................................................................................................... 10
JITTER
ATTENUATOR .................................................................................................................................... 12
................................................................................................................................................................... 13
CLOCK SYNTHESIZER................................................................................................................................... 13
ALARM FUNCTIONS/REDUNDANCY SUPPORT ................................................................................................. 14
SERIAL MICROPROCESSOR INTERFACE ......................................................................................................... 16
POWER AND GROUND .................................................................................................................................. 16
FUNCTIONAL DESCRIPTION ......................................................................................... 19
1.0 HARDWARE MODE VS HOST MODE ................................................................................................ 19
1.1 FEATURE DIFFERENCES IN HARDWARE MODE ...................................................................................... 19
TABLE 1: DIFFERENCES BETWEEN HARDWARE MODE AND HOST MODE .......................................................................................... 19
2.0 RECEIVE PATH LINE INTERFACE .................................................................................................... 20
FIGURE 3. SIMPLIFIED BLOCK DIAGRAM OF THE RECEIVE PATH...................................................................................................... 20
2.1 LINE TERMINATION (RTIP/RRING) .............................................................................................................. 20
2.1.1 CASE 1: INTERNAL TERMINATION.......................................................................................................................... 20
TABLE 2: SELECTING THE INTERNAL IMPEDANCE ............................................................................................................................. 20
FIGURE 4. TYPICAL CONNECTION DIAGRAM USING INTERNAL TERMINATION .................................................................................... 20
2.1.2 CASE 2: INTERNAL TERMINATION WITH ONE EXTERNAL FIXED RESISTOR FOR ALL MODES .................... 21
TABLE 3: SELECTING THE VALUE OF THE EXTERNAL FIXED RESISTOR ............................................................................................. 21
FIGURE 5. TYPICAL CONNECTION DIAGRAM USING ONE EXTERNAL FIXED RESISTOR ....................................................................... 21
2.2 CLOCK AND DATA RECOVERY ................................................................................................................... 22
FIGURE 6. RECEIVE DATA UPDATED ON THE RISING EDGE OF RCLK .............................................................................................. 22
FIGURE 7. RECEIVE DATA UPDATED ON THE FALLING EDGE OF RCLK ............................................................................................ 22
TABLE 4: TIMING SPECIFICATIONS FOR RCLK/RPOS/RNEG .......................................................................................................... 22
2.2.1 RECEIVE SENSITIVITY .............................................................................................................................................. 23
FIGURE 8. TEST CONFIGURATION FOR MEASURING RECEIVE SENSITIVITY........................................................................................ 23
2.2.2 INTERFERENCE MARGIN ......................................................................................................................................... 23
FIGURE 9. TEST CONFIGURATION FOR MEASURING INTERFERENCE MARGIN .................................................................................... 23
2.2.3 GENERAL ALARM DETECTION AND INTERRUPT GENERATION ........................................................................ 23
2.3 RECEIVE JITTER ATTENUATOR .................................................................................................................. 24
2.4 HDB3 DECODER ............................................................................................................................................ 25
2.5 RPOS/RNEG/RCLK ........................................................................................................................................ 25
FIGURE 10. SINGLE RAIL MODE WITH A FIXED REPEATING "0011" PATTERN................................................................................... 25
FIGURE 11. DUAL RAIL MODE WITH A FIXED REPEATING "0011" PATTERN...................................................................................... 25
2.6 RXMUTE (RECEIVER LOS WITH DATA MUTING) ....................................................................................... 26
FIGURE 12. SIMPLIFIED BLOCK DIAGRAM OF THE RXMUTE FUNCTION ............................................................................................ 26
3.0 TRANSMIT PATH LINE INTERFACE ................................................................................................. 27
FIGURE 13. SIMPLIFIED BLOCK DIAGRAM OF THE TRANSMIT PATH................................................................................................... 27
3.1 TCLK/TPOS/TNEG DIGITAL INPUTS ............................................................................................................ 27
FIGURE 14. TRANSMIT DATA SAMPLED ON FALLING EDGE OF TCLK ............................................................................................... 27
FIGURE 15. TRANSMIT DATA SAMPLED ON RISING EDGE OF TCLK ................................................................................................. 27
TABLE 5: TIMING SPECIFICATIONS FOR TCLK/TPOS/TNEG ........................................................................................................... 28
3.2 HDB3 ENCODER ............................................................................................................................................ 28
TABLE 6: EXAMPLES OF HDB3 ENCODING...................................................................................................................................... 28
3.3 TRANSMIT JITTER ATTENUATOR ............................................................................................................... 29
TABLE 7: MAXIMUM GAP WIDTH FOR MULTIPLEXER/MAPPER APPLICATIONS .................................................................................... 29
3.4 TAOS (TRANSMIT ALL ONES) ..................................................................................................................... 29
FIGURE 16. TAOS (TRANSMIT ALL ONES)...................................................................................................................................... 29
3.5 TRANSMIT DIAGNOSTIC FEATURES .......................................................................................................... 29
3.5.1 ATAOS (AUTOMATIC TRANSMIT ALL ONES)......................................................................................................... 29
FIGURE 17. SIMPLIFIED BLOCK DIAGRAM OF THE ATAOS FUNCTION............................................................................................... 30
3.5.2 QRSS GENERATION.................................................................................................................................................. 30
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