參數(shù)資料
型號: TUSB5052B
廠商: Texas Instruments, Inc.
英文描述: USB to 2-Serial + 1-Parallel Controller With Configurable Optional Hub
中文描述: USB轉(zhuǎn)2 -串行接口1 -可配置可選并行控制器集線器
文件頁數(shù): 77/84頁
文件大?。?/td> 276K
代理商: TUSB5052B
10–5
I
2
C 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 I
2
C controller notto 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]
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
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.
This operation repeats 31 times.
10.6.4 EPROM [DATA] - Last Byte
MCU sets I2CSTA[SWR] = 1. This forces the I
2
C 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.
I
2
C controller generates a stop condition after the contents of I2CDAO register are transmitted.
End of 32-byte page-write operation
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