TUSB5052 datasheet(77/84 Pages) TI

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10–5

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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 EPROM [DATA] is transmitted. The following describes the sequence of writing 32-bytes in

page mode:

10.6.1 Device Address + EPROM [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 E2PROM 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 (E2PROM 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 EPROM [Low-Byte]

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MCU writes the low byte of the E2PROM 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 (E2PROM 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 EPROM [DATA] - 31 Bytes

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The data to be written to the E2PROM 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 (E2PROM data).

•

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

have been transmitted.

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This operation repeats 31 times.

10.6.4 EPROM [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 E2PROM, into I2CDAO register.

•

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

•

The contents of the I2CDAO register are transmitted to E2PROM (E2PROM 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 I2CDAO register are transmitted.

•

End of 32-byte page-write operation

TUSB5052 Datasheet(PDF) 77 Page - Texas Instruments

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