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数据搜索系统，热门电子元器件搜索 |
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TMP86FS49AIUG 数据表(PDF) 214 Page - Toshiba Semiconductor |
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TMP86FS49AIUG 数据表(HTML) 214 Page - Toshiba Semiconductor |
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214 / 296 page  Page 198 16. Serial Bus Interface(I2C Bus) Ver.-D (SBI) 16.5 I2C Bus Control TMP86FS49AIUG Note 1: I2CAR is write-only register, which cannot be used with any of read-modify-write instruction such as bit manipulation, etc. Note 2: Do not set I2CAR to "00H" to avoid the incorrect response of acknowledgment in slave mode. ( If "00H" is set to I2CAR as the Slave Address and a START Byte "01H" in I2C bus standard is recived, the device detects slave address match.) Note 1: Switch a mode to port after confirming that the bus is free. Note 2: Switch a mode to I2C bus mode after confiming that the port is high level. Note 3: SBICRB has write-only register and must not be used with any of read-modify-write instructions such as bit manipulation, etc. Note 4: When the SWRST (Bit1, 0 in SBICRB) is written to "10", "01" in I2C bus mode, software reset is occurred. In this case, the SBICRA, I2CAR, SBISRA and SBISRB registers are initialized and the bits of SBICRB except the SBIM (Bit3, 2 in SBI- CRB) are also initialized. I2C bus Address Register I2CAR (0F92H) 7 6 5 43210 Slave address ALS (Initial value: 0000 0000) SA6 SA5 SA4 SA3 SA2 SA1 SA0 SA Slave address selection Write only ALS Address recognition mode spec- ification 0: Slave address recognition 1: Non slave address recognition Serial Bus Interface Control Register B SBICRB (0F93H) 7 6 5 43210 MST TRX BB PIN SBIM SWRST1 SWRST0 (Initial value: 0001 0000) MST Master/slave selection 0: Slave Write only 1: Master TRX Transmitter/receiver selection 0: Receiver 1: Transmitter BB Start/stop generation 0: Generate a stop condition when MST, TRX and PIN are "1" 1: Generate a start condition when MST, TRX and PIN are "1" PIN Cancel interrupt service request 0: – (Can not clear this bit by a software) 1: Cancel interrupt service request SBIM Serial bus interface operating mode selection 00: Port mode (Serial bus interface output disable) 01: Reserved 10: I2C bus mode 11: Reserved SWRST1 SWRST0 Software reset start bit Software reset starts by first writing "10" and next writing "01" Serial Bus Interface Status Register A SBISRA (0F90H) 765 43 2 1 0 SWRMON (Initial value: **** ***1) SWRMON Software reset monitor 0: During software reset Read only 1: – (Initial value) Serial Bus Interface Status Register B SBISRB (0F93H) 7 6 5 43210 MST TRX BB PIN AL AAS AD0 LRB (Initial value: 0001 0000) |
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