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CS43131 датащи(PDF) 61 Page - Cirrus Logic |
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CS43131 датащи(HTML) 61 Page - Cirrus Logic |
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61 / 156 page ![]() DS1155F1 61 CS43131 4.13 Control Port Operation To generate a read address not based on the last received MAP address, an aborted write operation can be used as a preamble (see Fig. 4-34). Here, a write operation is aborted (after the ACK for the control byte) by sending a Stop condition. Figure 4-34. Control Port Timing, I2C Reads with Preamble and Autoincrement (8-Bit Data Access) SCL CHIP ADDRESS (WRITE) MAP BYTE High (23:16) START STOP ACK SDA SDA Source Master Master Master Pull-up Slave Slave Pull-up ACK Addr = 01100 4 5 6 7 8 9 17 18 0 1 2 3 7 6 5 4 3 2 1 0 ACK 34 MAP BYTE Mid (15:8) MAP BYTE Low (7:0) 36 ACK ACK CONTROL BYTE 7 6 5 4 3 2 1 0 37 38 35 Empty 7 0 7 0 7 0 16 26 27 25 39 40 41 42 43 44 7 0 7 0 45 DATA BYTE 1 DATA BYTE N Master Master Slave Slave Slave M Slave START 7 6 5 4 3 2 1 0 ACK ACK M NACK STOP Master 4 5 6 7 8 9 0 1 2 3 16 17 Slave CHIP ADDRESS (READ) MAP ADDRESS MAP ADDRESS + (N-1) Addr = 01100 |
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