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Os motores de busca de Datasheet de Componentes eletrônicos |
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Os motores de busca de Datasheet de Componentes eletrônicos |
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TUSB8042AI Folha de dados(PDF) 43 Page - Texas Instruments |
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TUSB8042AI Folha de dados(HTML) 43 Page - Texas Instruments |
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43 / 64 page  9.2.1.2.4 Downstream Port 3 Implementation The downstream port3 of the TUSB8042A is connected to a USB3 Type-A connector. With BATEN3 pin pulled up, Battery Charge support is enabled for Port 3. If Battery Charge support is not needed, then TI recommends to uninstall the pullup resistor on BATEN3. For ferrite bead used on the VBUS connection, a lower resistance is recommended due to noticeable IR drop during high current charging modes. The isolation between the Type-A connectors shield ground and signal ground pins is not required. Some applications may have better ESD/EMI performance when the grounds are shorted together. POPULATE FOR BC SUPPORT USB_SSRXP_DN3 USB_SSRXM_DN3 CAP_DN3_TXP CAP_DN3_TXM VBUS_DS3 USB_DP_DN3 USB_DM_DN3 USB_SSTXM_DN3 USB_SSTXP_DN3 BOARD_3P3V OVERCUR3Z PWRCTRL3_BATEN3 DN3_VBUS R10 4.7K 0402 5% C20 0.1uF C19 0.001uF R11 1M 0402 5% C18 0.1uF 0201 C17 0.1uF 0201 TUSB8042A U1D PWRCTL3/BATEN3 33 OVERCUR3 44 USB_DP_DN3 17 USB_DM_DN3 18 USB_SSTXP_DN3 19 USB_SSTXM_DN3 20 USB_SSRXP_DN3 22 USB_SSRXM_DN3 23 C16 0.1uF FB3 220 at 100MHZ J4 USB3_TYPEA_CONNECTOR VBUS 1 DM 2 DP 3 GND 4 SSRXN 5 SSRXP 6 GND 7 SSTXN 8 SSTXP 9 SHIELD0 10 SHIELD1 11 Figure 9-5. Downstream Port 3 Implementation 9.2.1.2.5 Downstream Port 4 Implementation The downstream port 4 of the TUSB8042A is connected to a USB3 Type-A connector. With BATEN4 pin pulled up, Battery Charge support is enabled for Port 4. If Battery Charge support is not needed, then TI recommends to uninstall the pullup resistor on BATEN4. For ferrite bead used on the VBUS connection, a lower resistance is recommended due to noticeable IR drop during high current charging modes. The isolation between the Type-A connectors shield ground and signal ground pins is not required. Some applications may have better ESD/EMI performance when the grounds are shorted together. POPULATE FOR BC SUPPORT CAP_DN4_TXM CAP_DN4_TXP USB_SSRXM_DN4 USB_SSRXP_DN4 USB_DM_DN4 USB_DP_DN4 VBUS_DS4 USB_SSTXM_DN4 USB_SSTXP_DN4 BOARD_3P3V PWRCTRL4_BATEN4 OVERCUR4Z DN4_VBUS C24 0.1uF R12 4.7K 0402 5% TUSB8042A U1E OVERCUR4 43 USB_DP_DN4 24 USB_DM_DN4 25 USB_SSTXP_DN4 26 USB_SSTXM_DN4 27 USB_SSRXP_DN4 29 USB_SSRXM_DN4 30 PWRCTL4/BATEN4 32 R13 1M 0402 5% C25 0.001uF C23 0.1uF 0201 C22 0.1uF 0201 C21 0.1uF FB4 220 at 100MHZ J5 USB3_TYPEA_CONNECTOR VBUS 1 DM 2 DP 3 GND 4 SSRXN 5 SSRXP 6 GND 7 SSTXN 8 SSTXP 9 SHIELD0 10 SHIELD1 11 Figure 9-6. Downstream Port 4 Implementation www.ti.com TUSB8042A SLLSF93A – JUNE 2019 – REVISED JANUARY 2025 Copyright © 2025 Texas Instruments Incorporated Submit Document Feedback 43 Product Folder Links: TUSB8042A |
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