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EPC635 数据表(PDF) 81 Page - Espros Photonics corp |
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EPC635 数据表(HTML) 81 Page - Espros Photonics corp |
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81 / 97 page ![]() DLL_fine_ctrl_ext_lo DLL manual control: External fine control (low) 0x72 Bit No. 7 6 5 4 3 2 1 0 Bit name DLL_fine_ctrl_ext[7:0] Operation RW Default 0 0 0 0 0 0 0 0 0x00 DLL_fine_ctrl_ext: Fine control from user. Valid only when DLL_control.dll_ctrl_ext = 1 (see section 8.7.19., DLL_control) 8.6.9. DLL_coarse_ctrl_ext DLL_coarse_ctrl_ext DLL manual control: External coarse control 0x73 Bit No. 7 6 5 4 3 2 1 0 Bit name reserved dll_coarse_ctrl_ext Operation RW Default 0 0 0 0 0 0 0 0 0x00 dll_coarse_ctrl_ext: Coarse control from user. Valid only when DLL_control.dll_ctrl_ext = 1 (see section 8.7.19., DLL_control) 8.6.10. CFG_Mode_ CFG_Mode_Control Configuration mode: Control register 0x7D Bit No. 7 6 5 4 3 2 1 0 Bit name reserved sys_clk _bypass pll_bypass pll_en reserved Operation RW Default 0 0 0 0 0 1 0 0 0x04 (Note 1) sys_clk_bypass: Bypass OSC clock directly to the sys_clk output 0: normal 1: bypass (sys_clk = osc_clk) pll_bypass: Bypass OSC clock directly to the PLL output as clock source to the CGU 0: normal 1: bypass (pll_clk = osc_clk) pll_en: Enable PLL block 0: disable 1: enable Note 1: Default (reset) value is internally modified during start-up sequence. Therefore, when this register is read via I2C, a different value will be observed. © 2017 ESPROS Photonics Corporation Characteristics subject to change without notice 81 / 97 Datasheet_epc635-V1.02 www.espros.com |
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