SNIS217C december 2020 – may 2023 TMP139
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
As shown in Figure 7-11 and Figure 7-12, an I3C basic write operation is the same as an I2C write operation. For all bytes after the device address field, the 9th bit is the parity bit sent by the host. When the IBI is enabled by the host, it must send the IBI header byte which consists of 7'h7E+R/W=0, before it sends the device address. This allows the participating devices on the bus to arbitrate between themselves if more than one device has an interrupt condition that needs to be communicated to the host.
If there is a parity error during the data transfer, the device shall discard all the bytes including the byte for which parity error was detected and set the parity error condition. If the host attempts to start a new transaction with a Repeated Start to the same device, then TMP139 shall NACK the device address to indicate an error condition to the host. The host must first clear the parity error condition before performing any new transfer to the TMP139. When IBI is enabled, the device can communicate to the host the error conditions seen, using IBI. However when IBI is not enabled, it is strongly recommended that the host check the error status register to ensure that no parity error was detected on the bus.