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GS12341 Datasheet(PDF) 76 Page - Semtech Corporation |
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GS12341 Datasheet(HTML) 76 Page - Semtech Corporation |
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76 / 109 page ![]() GS12341 Final Data Sheet Rev.1 PDS-061928 August 2019 76 of 109 Semtech Proprietary & Confidential www.semtech.com 1D RSVD RSVD 15:0 R/W 0 Reserved - do not modify. 1E RSVD RSVD 15:0 R/W 4 Reserved - do not modify. 1F RSVD RSVD 15:0 R/W 43 Reserved - do not modify. 20 CD_FILTER_ DELAYS_0 RSVD 15:8 R/W 0 Reserved - do not modify. CFG_CD_FILTER_ SAMPLE_WIN 7:0 R/W 3 CEQ (Cable Equalizer) carrier detect filter sample window period in clock cycles. Sample window size is this value plus 1 clock cycle. Valid Range: 0x03 to 0xFF See Section 4.2.3 for details. 21 CD_FILTER_ DELAYS_1 RSVD 15:10 R/W 0 Reserved - do not modify. CFG_CD_FILTER_ DEASSERT_CNT 9:0 R/W F Number of samples required for detecting CEQ (cable equalizer) carrier detect de-assertion: Valid Range: 0x00 to 0x3FF See Section 4.2.3 for details. 22 CD_FILTER_ DELAYS_2 RSVD 15:10 R/W 0 Reserved - do not modify. CFG_CD_FILTER_ ASSERT_CNT 9:0 R/W 3FF Number of samples required for detecting CEQ (cable equalizer) carrier detect assertion: Valid Range: 0x00 to 0x3FF See Section 4.2.3 for details. 23 to 25 RSVD RSVD 15:0 R/W 0 Reserved - do not modify. Output Configuration 26 to 27 RSVD RSVD 15:0 R/W 0 Reserved - do not modify. 28 OUTPUT_ PARAM_TD_ SD_0 RSVD 15:13 R/W 0 Reserved - do not modify. CFG_OUTPUT1_TD_ SD_PREEMPH_WIDTH 12:8 R/W 2 Configure the SD rate pre-emphasis pulse width on trace driver output1 (DDO1). Range: 0 to 15d. Adjust the pre-emphasis pulse width to better match the channel loss response shape. Note: By default, the trace driver SD settings are applied for all rates (see CTRL_OUTPUT1_TRDR_PER_RATE for per rate setting). RSVD 7 R/W 0 Reserved - do not modify. Table 5-3: Control Register Descriptions (Continued) Addressh Register Name Parameter Name Bit Slice R/W Reset Valueh Description |
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