Epson S2R72A21 Application Note page 8

- INT_DP/DM : Please connect the Host SoC's USB port.
Please connect the Host SoC's USB OTG port in case Role Switch is executed. It is possible
to connect the BC Regulator for VBUS supply between the Host SoC's USB OTG port and
the S2R72A21's INT port.
BC Regulator can select the VBUS supply capability by negotiation with BC capable
Portable Device. If connected with non-BC capable portable Device, the VBUS supply
capability should be set to a fixed value or set by the Host SoC.
- EXT_DP/DM : Please connect to the USB Type-A receptacle.
Please connect or disconnect the portable device using a USB cable.
- ENABLE : Please control it via the Host SoC's GPIO.
Please set "1" when it is able to connect to the Device, and set "0" when the Device is
disconnected
- EN_DETACH: Please set and stable it either to "0" or "1" on the boards. In this chapter, the case
EN_DETACH=0 is explained as the basic setting.
- FRC_THR : Please set and stable it to "0" on the boards.
- SEL_I2C : Please set and stable it either to "0" or "1" on the boards. In this chapter, the case
SEL_I2C=1 (I2C is in use) is explained as the basic setting.
- ADJ[4:0] : Please set and stable it either to "0" or "1" on the boards.
ADJ[4:0] pins are assigned as I2C slave function pins in case SEL_I2C=1.
ADJ[2:0] : Please set up either "0" or "1" on the boards and select the slave address.
ADJ[3] : Please pull up to the HVDD and connect SCL of the I2C master
ADJ[4] :Please pull up to the HVDD and connect SDA of the I2C master
- STAT[1:0] : This is outputting the internal condition. During default, it would be open drain (0/HiZ)
outputs. Please monitor according to the needs.
Please refer to chapter 4 and 5 for detail connection as well as the operation (example).
6 Seiko Epson Corporation
S2R72A21 Application Note
(Rev.1.00)