NXP Semiconductors LPC1768 - Ceiver; Discharge VBUS

UM10360 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
User manual Rev. 3 — 19 December 2013 294 of 841
NXP Semiconductors
UM10360
Chapter 13: LPC176x/5x USB OTG
/* Set BDIS_ACON_EN in ISP1302 */
OTG_I2C_TX = 0x15A; // Send ISP1302 address, R/W=0
OTG_I2C_TX = 0x004; // Send Mode Control 1 (Set) register address
OTG_I2C_TX = 0x210; // Set BDIS_ACON_EN bit, send STOP condition
/* Wait for TDI to be set */
while (!(OTG_I2C_STS & TDI));
/* Clear TDI */
OTG_I2C_STS = TDI;
Clear BDIS_ACON_EN in external OTG transceiver
/* Set BDIS_ACON_EN in ISP1302 */
OTG_I2C_TX = 0x15A; // Send ISP1302 address, R/W=0
OTG_I2C_TX = 0x005; // Send Mode Control 1 (Clear) register address
OTG_I2C_TX = 0x210; // Clear BDIS_ACON_EN bit, send STOP condition
/* Wait for TDI to be set */
while (!(OTG_I2C_STS & TDI));
/* Clear TDI */
OTG_I2C_STS = TDI;
Discharge V
BUS
/* Clear the VBUS_DRV bit in ISP1302 */
OTG_I2C_TX = 0x15A; // Send ISP1302 address, R/W=0
OTG_I2C_TX = 0x007; // Send OTG Control (Clear) register address
OTG_I2C_TX = 0x220; // Clear VBUS_DRV bit, send STOP condition
/* Wait for TDI to be set */
while (!(OTG_I2C_STS & TDI));
/* Clear TDI */
OTG_I2C_STS = TDI;
/* Set the VBUS_DISCHRG bit in ISP1302 */
OTG_I2C_TX = 0x15A; // Send ISP1302 address, R/W=0
OTG_I2C_TX = 0x006; // Send OTG Control (Set) register address
OTG_I2C_TX = 0x240; // Set VBUS_DISCHRG bit, send STOP condition
/* Wait for TDI to be set */
while (!(OTG_I2C_STS & TDI));
/* Clear TDI */
OTG_I2C_STS = TDI;