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TUSB1146 Datasheet(PDF) 49 Page - Texas Instruments |
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TUSB1146 Datasheet(HTML) 49 Page - Texas Instruments |
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49 / 69 page  A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A12 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 B1 GND GND GND GND TXP2 TXN2 VBUS VBUS VBUS VBUS RXP2 RXN2 SBU1 DN1 DP1 CC1 TXN1 TXP1 RXP1 RXN1 SBU2 CC2 DP2 DN2 RX2P RX2N TX2P TX2N TX1N TX1P RX1N RX1P SBU1 SBU2 SSTXP SSTXN SSRXP SSRXN DP0P DP0N DP1P DP1N DP2P DP2N DP3P DP3N AUXP AUXN SSRXP SSRXN SSTXP SSTXN AUXP AUXN DP_PWR (3.3V) 100K 100K CAC-DP 100nF 100nF CAC-USB1 DP_ML0P DP_ML0N DP_ML1P DP_ML1N DP_ML2P DP_ML2N DP_ML3P DP_ML3N USB 3 Host DP TX GPU USB Type-C Receptacle FLIP/SCL CTL0/SDA CTL1/HPDIN 2M 2M Type-C PD Controller I2C_EN SSEQ0/A0 SSEQ1 DPEQ0/A1 DPEQ1 EQ0 EQ1 RI2C 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V VI2C 100nF 10 F 3.3V 100nF 100nF 100nF HPDIN/RSVD2 CADSNK_RSVD1 CAC-USB1 RRX CAC-USB2 RRX RI2C 3.3V DP Alt Mode XMUX Redriver RESD CAC-USB2 CAC-USB1 RESD Figure 8-2. Application Circuit 8.2.2.1 USB and DP Upstream Facing Port (USB Host / DP GPU to USB-C Receptacle) Configuration Configuring the TUSB1146-Q1 for the USB and DP downstream direction involves understanding the insertion loss (SDD21) of the pre-channel (XAB and XCD). Set the DPEQ[1:0] pins and SSEQ[1:0] pins or SSEQ_SEL and DPEQx_SEL registers to the level of the pre-channel insertion loss at 5GHz. TI recommends using insertion loss at 5GHz of approximately –1.0dB per inch for FR4 trace. Following this recommendation, if the pre-channel for www.ti.com TUSB1146-Q1 SLLSFZ7 – FEBRUARY 2025 Copyright © 2025 Texas Instruments Incorporated Submit Document Feedback 49 Product Folder Links: TUSB1146-Q1 |
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