參數(shù)資料
型號： PSB21911
廠商： SIEMENS A G
元件分類： 數(shù)字傳輸電路
英文描述： ISDN Echocancellation Circuit for Terminal Applications IEC-Q TE
中文描述： DATACOM, ISDN ECHO CANCELLER
文件頁數(shù)： 5/164頁
文件大小： 1401K
代理商： PSB21911
PSB 21911
PSF 21911
List of Figures
Page
Semiconductor Group
5
11.97
Figure 1:
Figure 2:
Figure 3:
Figure 4:
Figure 5:
Figure 6:
Figure 7:
Figure 8:
Figure 9:
Figure 10: IEC-Q TE Device Architecture (Stand-Alone Mode). . . . . . . . . . . . . . . . . 29
Figure 11: IOM-2 Clocks and Data Lines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 12: Basic Channel Structure of IOM-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 13: Definition of the IOM-2 Frame in TE Mode. . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 14: Definition of the IOM-2 Frame in NT Mode. . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 15: Deactivation of the IOM-2 Clocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 16: U-Transceiver Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 17: CRC-Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Figure 18: Block Error Counter Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Figure 19: Scrambler / Descrambler Algorithms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Figure 20: EOC-Processor: Auto Mode, Transparent Mode . . . . . . . . . . . . . . . . . . . 51
Figure 21: State Diagram Notation U-Transceiver. . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Figure 22: State Transition Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Figure 23: Test Loop-Backs Supported by the IEC-Q TE . . . . . . . . . . . . . . . . . . . . . 76
Figure 24: DAC-Output for a Single Pulse. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Figure 25: Pulse Mask for a Single Positive Pulse . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Figure 26: Access to IOM-2 Channels (μP mode). . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Figure 27: Procedure for the D-Channel Processing. . . . . . . . . . . . . . . . . . . . . . . . . 83
Figure 28: C/I Channel Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Figure 29: Monitor Channel Access Directions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Figure 30: Monitor Channel Protocol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Figure 31: D-Channel Request by the Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Figure 32: Reset Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Figure 33: Sampling of Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Figure 34: Example: C/I-Channel Use (all data values hexadecimal) . . . . . . . . . . . . 97
Figure 35: Complete Activation Initiated by LT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Figure 36: Complete Activation Initiated by TE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Figure 37: Complete Deactivation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Figure 38: U Only Activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Figure 39: LT Initiated Activation with U-Interface Active . . . . . . . . . . . . . . . . . . . . 105
Figure 40: TE-Activation with U Active and Exchange Control (case 1) . . . . . . . . . 106
Figure 41: TE-Activation with U Active and no Exchange Control (case 2). . . . . . . 107
Figure 42: Deactivation of S/T Only. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Stand-Alone Mode (left) and μP Mode (right). . . . . . . . . . . . . . . . . . . . . . . 8
Logic Symbol μP Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Logic Symbol Stand-Alone Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Pin Configuration P-LCC-44 and T-QFP-64 Package (top view) . . . . . . . 12
ISDN PC Adapter Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
ISDN Stand-Alone Terminal with POTS Interface . . . . . . . . . . . . . . . . . . 23
ISDN Feature Phone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
ISDN-Modem PC Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
IEC-Q TE Device Architecture (μP Mode) . . . . . . . . . . . . . . . . . . . . . . . . 28
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