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STLC7550TQF7 bảng dữ liệu(PDF) 10 Page - STMicroelectronics |
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STLC7550TQF7 bảng dữ liệu(HTML) 10 Page - STMicroelectronics |
10 / 17 page 6 - CONTROL REGISTER This section defines the control and device status information. The register programming occurs only during Secondary Frame Synchronization. After a reset condition, the device is always in data mode. Table 3 : Bits Assignment Bits Name Function Reset Value 0- - 0 1 D1 Aux/Main Input 0 2 D2 Receive Gain 0 3 D3 Oversampling bit 0 0 4 D4 Oversampling bit 1 0 5 D5 Oversampling bit 2 0 6 D6 Attenuator transmit bit 0 0 7 D7 Attenuator transmit bit1 0 8 M M Divider 1 9 Q0 Q0 Divider 1 10 Q1 Q1 Divider 0 11 Q2 Q2 Divider 0 12 T0 M Divider and Test mode bit 0 0 13 T1 M Divider and Test mode bit 1 0 14 TEST2 Test mode bit 2 0 15 TEST3 Test mode bit 3 0 Table 4 : Aux/Main Input D1 Function 0 Main Receive Input 1 Auxiliary Receive Input Table 5 : Receive Gain D2 Function DIFFERENTIAL INPUT 0 0dB gain (commun mode fixed) 1 +6dB gain (commun mode non-fixed) SINGLE ENDED (one input used, other at VCM) 0 -6dB gain (see Note 1) 1 0dB gain Note 1 : Not recommended case. Performances could be reduced. Table 6 : Oversampling Ratio D5 D4 D3 Function 0 0 0 160 0 0 1 192 0 1 0 Reserved 0 1 1 Reserved 1 0 0 Reserved 10 1 64 11 0 96 1 1 1 128 Table 7 : Transmit Attenuation D7 D6 Function 0 0 Infinite 0 1 Reserved 1 0 -6dB 11 0dB Table 8 : Q Divider Clock Generator D11 D10 D9 Function 0 0 0 Q divider = 5 0 0 1 Q divider = 6 0 1 0 Q divider = 7 0 1 1 Q divider = 8 1 0 0 Q divider = 4.5 1 0 1 Q divider = 5.5 1 1 0 Q divider = 6.5 1 1 1 Q divider = 7.5 Table 9 : M Divider Clock Generator D13 D12 D8 Function 0 0 0 M divider = 3 0 0 1 M divider = 4 0 1 X Reserved 1 0 X Reserved 1 1 0 M divider = 1 1 1 1 M divider = 2 Table 10 : Reserved Mode D15 D14 Function X X Reserved for test This two bits must be set to 0 for normal operation. FUNCTIONAL DESCRIPTION (continued) STLC7550 10/17 |
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Mô tả tương tự - STLC7550TQF7 |
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