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TUSB1146 Datasheet(PDF) 39 Page - Texas Instruments |
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TUSB1146 Datasheet(HTML) 39 Page - Texas Instruments |
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39 / 69 page  Table 7-6. DP23EQ_SEL Register Field Descriptions (continued) Bit Field Type Reset Description 3-0 DP2EQ_SEL RH/W 0x0 Field selects EQ for DP lane 2 pins. When EQ_OVERRIDE = 0b, this field reflects the sampled state of DPEQ[1:0] pins. When EQ_OVERRIDE = 1b, software can change the EQ setting for DP Lane 2 based on value written to this field. 7.1.5 DisplayPort_1 Register (Offset = 0x12) [reset = 0x0] DisplayPort_1 is shown in Table 7-7. Return to the Summary Table. This register provides status of AUX snooping when AUX Snooping is enabled. Table 7-7. DisplayPort_1 Register Field Descriptions Bit Field Type Reset Description 7 RESERVED R 0x0 Reserved 6-5 SET_POWER_STATE RH 0x0 This field represents the snooped value of the AUX write to DPCD address 0x00600. When AUX_SNOOP_DISABLE = 0b, the enable/disable of DP lanes based on the snooped value. When AUX_SNOOP_DISABLE = 1b, then DP lane enable/disable are determined by state of DPx_DISABLE registers, where x = 0, 1, 2, or 3. This field is reset to 0h by hardware when CTLSEL1 changes from a 1b to a 0b. 4-0 LANE_COUNT_SET RH 0x0 This field represents the snooped value of AUX write to DPCD address 0x00101 register. When AUX_SNOOP_DISABLE = 0b, DP lanes enabled specified by the snoop value. Unused DP lanes are disabled to save power. When AUX_SNOOP_DISABLE = 1b, then DP lanes enable/disable are determined by DPx_DISABLE registers, where x = 0, 1, 2, or 3. This field is reset to 0h by hardware when CTLSEL1 changes from a 1b to a 0b. 7.1.6 DisplayPort_2 Register (Offset = 0x13) [reset = 0x0] DisplayPort_2 is shown in Table 7-8. Return to the Summary Table. This register provides controls for enabling and disabling AUX snooping and individual DP lanes. Table 7-8. DisplayPort_2 Register Field Descriptions Bit Field Type Reset Description 7 AUX_SNOOP_DISABLE R/W 0x0 Controls whether DP lanes are enabled based on AUX snooped value or registers. 0x0 = AUX snoop enabled. 0x1 = AUX snoop disabled. DP lanes are controlled by registers. 6 RESERVED R 0x0 Reserved www.ti.com TUSB1146-Q1 SLLSFZ7 – FEBRUARY 2025 Copyright © 2025 Texas Instruments Incorporated Submit Document Feedback 39 Product Folder Links: TUSB1146-Q1 |
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