Alif Semiconductor /AE302F80C1557LE_CM55_HE_View /I2C0 /I2C_TAR

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Interpret as I2C_TAR

GC_OR_START=Val_0x0, IC_10BITADDR_MASTER=Val_0x0, SPECIAL=Val_0x0, DEVICE_ID=Val_0x0

Description

Target Address Register

Fields

IC_TAR	This is the target address for any master transaction. When transmitting a General Call, these bits are ignored. To generate a START_BYTE command, the CPU needs to write only once into these bits. If the I2C_TAR and I2C_SAR[IC_SAR] are the same, loopback exists but the FIFOs are shared between master and slave, so full loopback is not feasible. Only one direction loopback mode is supported (simplex), not duplex. A master can not transmit to itself; it can transmit to only a slave.
GC_OR_START	If bit SPECIAL is set to 1 and bit DEVICE_ID is set to 0, then this bit indicates whether a General Call or START byte command is performed by the I2C. General Call Address-after issuing a General Call, only writes may be performed. Attempting to issue a read command results in setting I2C_RAW_INTR_STAT[TX_ABRT] bit. The I2C remains in General Call mode until the SPECIAL bit value is cleared. 0 (Val_0x0): GENERAL_CALL byte transmission 1 (Val_0x1): START BYTE transmission
SPECIAL	This bit indicates whether software performs a DEVICE_ID or General Call or START BYTE command. 0 (Val_0x0): Disables programming of GENERAL_CALL or START_BYTE transmission. Ignore GC_OR_START bit and use I2C_TAR normally. 1 (Val_0x1): Enables programming of GENERAL_CALL or START_BYTE transmission. Perform special I2C command as specified in Device_ID or GC_OR_START bit.
IC_10BITADDR_MASTER	This bit controls whether the I2C starts its transfers in 7-bit or 10-bit addressing mode when acting as a master. 0 (Val_0x0): 7-bit addressing mode 1 (Val_0x1): 10-bit addressing mode
DEVICE_ID	If bit SPECIAL is set to 1, then this bit indicates whether a Device-ID of a particular slave mentioned in I2C_TAR[IC_TAR] is to be performed by the I2C Master. 0 (Val_0x0): Disables programming of DEVICE-ID transmission. Device-ID is not performed and checks I2C_TAR[GC_OR_START] to perform either general call or START byte command. 1 (Val_0x1): Enables programming of DEVICE-ID transmission. Device-ID transfer is performed and bytes based on the number of read commands in the Tx FIFO are received from the targeted slave and put in the Rx FIFO.

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