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WM9090ECS/R データシート(PDF) 67 Page - Wolfson Microelectronics plc |
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WM9090ECS/R データシート(HTML) 67 Page - Wolfson Microelectronics plc |
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67 / 81 page  Production Data WM9090 w PD, November 2010, Rev 4.1 67 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION REFER TO R71 (47h) Write Sequencer 1 14:12 WSEQ_DATA_ WIDTH [2:0] 000 Width of the data block written in this sequence step. 000 = 1 bit 001 = 2 bits 010 = 3 bits 011 = 4 bits 100 = 5 bits 101 = 6 bits 110 = 7 bits 111 = 8 bits 11:8 WSEQ_DATA_ START [3:0] 0000 Bit position of the LSB of the data block written in this sequence step. 0000 = Bit 0 … 1111 = Bit 15 7:0 WSEQ_ADDR [7:0] 0000_0000 Control Register Address to be written to in this sequence step. Register 47h Write Sequencer 1 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION REFER TO R72 (48h) Write Sequencer 2 14 WSEQ_EOS 0 End of Sequence flag. This bit indicates whether the Control Write Sequencer should stop after executing this step. 0 = Not end of sequence 1 = End of sequence (Stop the sequencer after this step). 11:8 WSEQ_DELAY [3:0] 0000 Time delay after executing this step. Total time per step (including execution) = 62.5us × (2^WSEQ_DELAY + 8) 7:0 WSEQ_DATA [7:0] 0000_0000 Data to be written in this sequence step. When the data width is less than 8 bits, then one or more of the MSBs of WSEQ_DATA are ignored. It is recommended that unused bits be set to 0. Register 48h Write Sequencer 2 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION REFER TO R73 (49h) Write Sequencer 3 9 WSEQ_ABOR T 0 Writing a 1 to this bit aborts the current sequence and returns control of the device back to the serial control interface. 8 WSEQ_START 0 Writing a 1 to this bit starts the write sequencer at the memory location indicated by the WSEQ_START_INDEX field. The sequence continues until it reaches an “End of sequence” flag. At the end of the sequence, this bit will be reset by the Write Sequencer. 5:0 WSEQ_START _INDEX [5:0] 00_0000 Sequence Start Index. This is the memory location of the first command in the selected sequence. 0 to 15 = RAM addresses 16 to 58 = ROM addresses 59 to 63 = Reserved Register 49h Write Sequencer 3 |
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