TUSB5052 datasheet(71/82 Pages) TI

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10−5

The contents of the I2CDAO register are transmitted to the device (EEPROM data).

TxE bit in the I2CSTA register is set and interrupts the MCU, indicating that the I2CDAO register contents

have been transmitted.

I2C controller generates a stop condition after the contents of the I2CDAO register are transmitted.

End

10.6 Page Write

The page-write operation is initiated in the same way as byte-write, with the exception that a stop condition is not

generated after the first EEPROM [DATA] is transmitted. The following describes the sequence of writing 32-bytes

in page mode:

10.6.1 Device Address + EEPROM [High-Byte]

MCU sets I2CSTA[SWR] = 0. This forces the I2C controller not to generate a stop condition after the contents

of the I2CDAO register are transmitted.

MCU writes the device address (R/W bit = 0) to the I2CADR register (write operation).

MCU writes the high-byte of the EEPROM address into the I2CDAO register.

TxE bit in the I2CSTA register is cleared (indicating busy).

The contents of the I2CADR register are transmitted to the device (preceded by start condition on SDA).

The contents of the I2CDAO register are transmitted to the device (EEPROM address).

TxE bit in the I2CSTA register is set and interrupts the MCU, indicating that the I2CDAO register contents

have been transmitted.

10.6.2 EEPROM [Low-Byte]

MCU writes the low byte of the EEPROM address into the I2CDAO register.

TxE bit in the I2CSTA register is cleared (indicates busy).

The contents of the I2CDAO register are transmitted to the device (EEPROM address).

TxE bit in the I2CSTA register is set and interrupts the MCU, indicating that the I2CDAO-register contents

have been transmitted.

10.6.3 EEPROM [DATA] - 31 Bytes

The data to be written to the EEPROM are written by the MCU into the I2CDAO register.

TxE bit in the I2CSTA register is cleared (indicates busy).

The contents of the I2CDAO register are transmitted to the device (EEPROM data).

TxE bit in the I2CSTA register is set and interrupts the MCU, indicating that the I2CDAO-register contents

have been transmitted.

This operation repeats 31 times.

10.6.4 EEPROM [DATA] - Last Byte

MCU sets I2CSTA[SWR] = 1. This forces the I2C controller to generate a stop condition after the contents

of the I2CDAO register are transmitted.

MCU writes the last date byte to be written to the EEPROM, into I2CDAO register.

TUSB5052 Datasheet(PDF) 71 Page - Texas Instruments