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TUSB8043AI 数据表(PDF) 43 Page - Texas Instruments |
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TUSB8043AI 数据表(HTML) 43 Page - Texas Instruments |
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43 / 62 page  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% TUSB8043A 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 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 TUSB8043A 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 43 TUSB8043A www.ti.com SLLSF94 – JUNE 2019 Product Folder Links: TUSB8043A Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated 9.2.1.2.4 Downstream Port 3 Implementation The downstream port3 of the TUSB8043A 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 pull-up resistor on BATEN3 should be uninstalled. 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. Figure 31. Downstream Port 3 Implementation 9.2.1.2.5 Downstream Port 4 Implementation The downstream port 4 of the TUSB8043A 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 pull-up resistor on BATEN4 should be uninstalled. 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. Figure 32. Downstream Port 4 Implementation |
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