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TUSB320 Datasheet(PDF) 20 Page - Texas Instruments |
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TUSB320 Datasheet(HTML) 20 Page - Texas Instruments |
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20 / 35 page  A1 A12 B12 B1 A2 A3 A4 A5 A11 A6 A7 A8 A9 A10 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 VBUS DP DM CC1 CC2 TUSB320 CC1 CC2 VBUS_DET 900 K USB VBUS Switch (optional BC 1.2 support for legacy) DM_IN DP_IN VOUT DM_OUT DP_OUT VIN 150 uF System VBUS PORT 100 nF VBAT USB2 OTG & PMIC 4.7 K 4.7 K SDA/OUT1 SCL/OUT2 INT_N/OUT3 ID 200 K 200 K I2C I/O 1.8 V or 3.3 V EN SCL SDA FAULT# DM DP PS_EN PS_FAULT# VBUS ID INT# SCL SDA Disconnect bulk cap when UFP 1 uF Copyright © 2016, Texas Instruments Incorporated 20 TUSB320, TUSB320I SLLSEN9C – MAY 2015 – REVISED SEPTEMBER 2016 www.ti.com Product Folder Links: TUSB320 TUSB320I Submit Documentation Feedback Copyright © 2015–2016, Texas Instruments Incorporated 8.2 Typical Application 8.2.1 DRP in I2C Mode Figure 10 shows the TUSB320 device configured as a DRP in I2C mode. Figure 10. DRP in I2C Mode Schematic 8.2.1.1 Design Requirements For this design example, use the parameters listed in Table 8: Table 8. Design Requirements for DRP in I2C Mode DESIGN PARAMETER VALUE VDD (2.75 V to 5 V) VBAT (less than 5 V) Mode (I2C or GPIO) I2C ADDR pin must be pulled down or pulled up I2C address (0x61 or 0x60) 0x60 ADDR pin must be pulled low or tied to GND Type-C port type (UFP, DFP, or DRP) DRP PORT pin is NC Shutdown support (EN_N control) No 8.2.1.2 Detailed Design Procedure The TUSB320 device supports a VDD in the range of 2.75 V to 5 V. In this particular use case, VBAT which must be in the required VDD range is connected to the VDD pin. A 100-nF capacitor is placed near VDD. The TUSB320 device is placed into I2C mode by either pulling the ADDR pin high or low. In this case, the ADDR pin is tied to GND which results in a I2C address of 0x60. The SDA and SCL must be pulled up to either 1.8 V or 3.3 V. When pulled up to 3.3 V, the VDD supply must be at least 3 V to keep from back-driving the I 2C interface. The TUSB320 device can enter shutdown mode by pulling the EN_N pin high, which puts the TUSB320 device into a low power state. In this case, external control of the EN_N pin is not implemented and therefore the EN_N pin is tied to GND. |
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