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AX68002QF Scheda tecnica(PDF) 36 Page - ASIX Electronics Corporation |
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AX68002QF Scheda tecnica(HTML) 36 Page - ASIX Electronics Corporation |
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36 / 57 page ![]() 36 AX6800x 2/4-Port USB KVM Switch SoC Copyright © 2015 ASIX Electronics Corporation. All rights reserved. 3.1.3 Programmable USB Pull Disable (0x04) Programmable USB Pull Disable (0x04) Bit 7 6 5 4 3 2 1 0 Name D3PD D2PD D1PD D0PD U3PU U2PU U1PU U0PU Reset Value 0 0 0 0 0 0 0 0 Bit Name Description 0 U0PU USB Up Stream Port0 pull up disable 1: force the D+ 1.5K pull up disable. 0: Control the D+ pull up by Hardware automatically. Note: when set this bit to 1, should add the external 1.5K pull up for D+ off-chip. 1 U1PU USB Up Stream Port1 pull up disable 1: force the D+ 1.5K pull up disable. 0: Control the D+ pull up by Hardware automatically. Note: when set this bit to 1, should add the external 1.5K pull up for D+ off-chip. 2 U2PU USB Up Stream Port2 pull up disable 1: force the D+ 1.5K pull up disable. 0: Control the D+ pull up by Hardware automatically. Note: when set this bit to 1, should add the external 1.5K pull up for D+ off-chip. 3 U3PU USB Up Stream Port3 pull up disable 1: force the D+ 1.5K pull up disable. 0: Control the D+ pull up by Hardware automatically. Note: when set this bit to 1, should add the external 1.5K pull up for D+ off-chip. 4 D0PD USB Down Stream Port0 pull down disable 1: force the D+ and D- 15K pull down disable. 0: always pull down the D+ and D- by 15K ohm. Note: when set this bit to 1, should add the external 15K pull down for D+/D- off-chip. 5 D1PD USB Down Stream Port1 pull down disable 1: force the D+ and D- 15K pull down disable. 0: always pull down the D+ and D- by 15K ohm. Note: when set this bit to 1, should add the external 15K pull down for D+/D- off-chip. 6 D2PD USB Down Stream Port2 pull down disable 1: force the D+ and D- 15K pull down disable. 0: always pull down the D+ and D- by 15K ohm. Note: when set this bit to 1, should add the external 15K pull down for D+/D- off-chip. 7 D3PD USB Down Stream Port3 pull down disable 1: force the D+ and D- 15K pull down disable. 0: always pull down the D+ and D- by 15K ohm. Note: when set this bit to 1, should add the external 15K pull down for D+/D- off-chip. 3.1.4 Reserved (0x05) This field should be set to 0x00. |
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