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TUSB8044AI Datasheet(PDF) 50 Page - Texas Instruments |
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TUSB8044AI Datasheet(HTML) 50 Page - Texas Instruments |
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50 / 63 page  VBUS 1 D- 2 D+ 3 GND 4 SSRX- 5 SSRX+ 6 GND_DRAIN 7 SSTX- 8 SSTX+ 9 SHIELD S1 SHIELD S2 SHIELD S3 SHIELD S4 TypeA_receptacle_Port4 USB_DP_DN4 USB_DM_DN4 USB_RXP_DN4 USB_RXM_DN4 PWRCT4_BATEN4 OVERCUR4z USB_RXP_DN4 USB_RXM_DN4 0.1uF C23 0.1uF C24 GND 0.1uF C26 0.001uF C25 1M R8 GND USB_TXP_DN4 USB_TXM_DN4 220 ohm FB3 DN4_VBUS 0.1uF C22 GND USB_SSTXP_DN4 26 USB_SSTXM_DN4 27 USB_SSRXP_DN4 29 USB_SSRXM_DN4 30 USB_DP_DN4 24 USB_DM_DN4 25 PWRCTL4/BATEN4 32 OVERCUR4 43 U1E TUSB8044ARGCR USB_TXP_DN4 USB_TXM_DN4 4.7k R7 3P3V VBUS 1 D- 2 D+ 3 GND 4 SSRX- 5 SSRX+ 6 GND_DRAIN 7 SSTX- 8 SSTX+ 9 SHIELD S1 SHIELD S2 SHIELD S3 SHIELD S4 TypeA_receptacle_Port3 USB_DP_DN3 USB_DM_DN3 USB_TXP_DN3 USB_TXM_DN3 USB_RXP_DN3 USB_RXM_DN3 PWRCT3_BATEN3 OVERCUR3z 3P3V USB_RXP_DN3 USB_RXM_DN3 0.1uF C18 0.1uF C19 GND 0.1uF C21 0.001uF C20 1M R6 GND USB_TXP_DN3 USB_TXM_DN3 220 ohm FB2 DN3_VBUS 0.1uF C17 GND USB_SSTXP_DN3 19 USB_SSTXM_DN3 20 USB_SSRXP_DN3 22 USB_SSRXM_DN3 23 USB_DP_DN3 17 USB_DM_DN3 18 PWRCTL3/BATEN3 33 OVERCUR3 44 U1D TUSB8044ARGCR 4.7K R5 50 TUSB8044A SLLSF92 – FEBRUARY 2019 www.ti.com Product Folder Links: TUSB8044A Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated 9.2.1.2.4 Downstream Port 3 Implementation The downstream port3 of the TUSB8044A 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 40. Downstream Port 3 Implementation 9.2.1.2.5 Downstream Port 4 Implementation The downstream port 4 of the TUSB8044A 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 41. Downstream Port 4 Implementation |
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