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STPMC1 数据表(PDF) 46 Page - STMicroelectronics |
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STPMC1 数据表(HTML) 46 Page - STMicroelectronics |
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46 / 77 page  Theory of operation STPMC1 46/77 Doc ID 15728 Rev 6 iCT = α iN + α iS + β iR iCN = α iT + β iS + γ iR 9.17 Data records map There are seven groups of four data records available, each consisting of a parity nibble (see paragraph 9.17.8) and 28-bit data field. The data records have fixed position of reading. This means that no addressing of records is necessary. It is up to an application to decide how many records should read out from the device. If an application sends to device a precharge command (see paragraph 9.20) before the reading of a group, the internal group pointer is incremented. This way, a faster access to later groups is possible. Below are shown all the groups, their position within the sequence of reading, and the name and assembly of data records. 9.17.1 Group 0 data records 0.1 DAP: ● 3- phase active energy wide band: 20-bit accumulator of 3-ph active energy wide band (see paragraph 9.11) ● 3-ph lower status: bits [0:7] of 3-phase status (see Table 31) 0.2 DRP: ● 3- phase reactive energy: 20-bit accumulator of 3-ph reactive energy (see paragraph 9.11) ● 3-ph up status: bits [8:11] of 3-phase status (see Table 31) ● TSG bits: 4 TSG mode signal (see paragraph 9.20) 0.3 DFP: ● 3-phase active energy fundamental: 20-bit accumulator of 3-ph active energy from fundamental harmonic (see paragraph 9.11) ● system signals: commands BANK-PUMP-TST0-TST1-TST2-RD-WE-precharge (see paragraph 9.20) Figure 14. Group 0 data records parity 3-phase active energy wide band 3-ph lower status DAP DRP DFP PRD parity DC uN period parity 3-phase active energy fundamental system signals 12 bit 4 bit 16 bit 4 bit 4 bit 20 bit 8 bit parity TSG bits 3-phase reactive energy 3-ph up status parity 3-phase active energy wide band 3-ph lower status DAP DRP DFP PRD parity DC uN period parity 3-phase active energy fundamental system signals 12 bit 4 bit 4 bit 16 bit 4 bit 4 bit 20 bit 8 bit parity TSG bits 3-phase reactive energy 3-ph up status parity 3-phase active energy wide band 3-ph lower status DAP DRP DFP PRD parity DC uN period parity 3-phase active energy fundamental system signals 12 bit 4 bit 16 bit 4 bit 4 bit 20 bit 8 bit parity TSG bits 3-phase reactive energy 3-ph up status parity 3-phase active energy wide band 3-ph lower status DAP DRP DFP PRD parity DC uN period parity 3-phase active energy fundamental system signals 12 bit 4 bit 4 bit 16 bit 4 bit 4 bit 20 bit 8 bit parity TSG bits 3-phase reactive energy 3-ph up status |
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