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TMP139AIYAHT Datasheet(PDF) 30 Page - Texas Instruments |
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TMP139AIYAHT Datasheet(HTML) 30 Page - Texas Instruments |
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30 / 58 page  R/W = 0 after the Start or Repeated Start. If the CMD field indicates that there is only one byte to write, then the optional register data must not be sent by the host. 0x62 T S or Sr 1 1 1 1 1 1 0 ACK R/W=0 ADDRMASK [2] STOFF SET [1] PECBL[1] REGMOD = 1 T Sr or P ADDRMASK [1] ADDRMASK [0] PECBL[0] STOFF SET [0] DEV ADDR 0 T REGISTER O FFSET T REGISTER DATA 1 T OPTIONAL REGIS TER DATA 2 T Figure 7-43. DEVCTRL CCC With REGMOD = 1 and PEC Disabled 0x62 T S or Sr 1 1 1 1 1 1 0 ACK R/W=0 ADDRMASK [2] STOFF SET [1] PECBL[1] REGMOD = 1 T ADDRMASK [1] ADDRMASK [0] PECBL[0] STOFF SET [0] DEV ADDR 0 T T T T T Sr or P PEC T REGISTER O FFSET CMD REGISTER DA TA 1 OPTIONAL REGIS TER DATA 2 W=0 0000 Figure 7-44. DEVCTRL CCC With REGMOD = 1 and PEC Enabled Note TMP139 NACKs the DEVCTRL CCC if the previous transaction has a parity or PEC error and the host starts the transaction with a Repeated Start. The Table 7-8 describes the definition of the command fields. Table 7-8. DEVCTRL CCC Command Definitions Field Description Values Action ADDRMASK[2:0] Broadcast, multicast or unicast selection 000 = Unicast command TMP139 matches the DEVADDR[6:0] field with its serial address . 011 = Multicast command TMP139 matches the DEVADDR[6:3] field with its LID code in the serial address. 111 = Broadcast command TMP139 ignores the DEVADDR[6:0] and performs the required action. STOFFSET[1:0] Start offset byte 00 = Byte 0 TMP139 identifies which byte is the first byte out of DEVCTRL DATA 0, DEVCTRL DATA 1, DEVCTRL DATA 2 and DEVCTRL DATA 3 and updates its register accordingly. This field is valid only when REGMOD = 0. 01 = Byte 1 10 = Byte 2 11 = Byte 3 PECBL[1:0] Identifies the burst length for PEC byte position 00 = 1 Byte TMP139 identifies the position of the PEC byte after the DEVCTRL DATA bytes are sent. This field is valid only when REGMOD = 0 and PEC is enabled. 01 = 2 Byte 10 = 3 Byte 11 = 4 Byte TMP139 SNIS217 – DECEMBER 2020 www.ti.com 30 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: TMP139 |
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