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CY28341OC-3T Datasheet(PDF) 4 Page - SpectraLinear Inc |
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CY28341OC-3T Datasheet(HTML) 4 Page - SpectraLinear Inc |
4 / 19 page CY28341-3 Rev 1.0, November 21, 2006 Page 4 of 19 Table 2. Command Code Definition Bit Description 7 0 = Block read or block write operation 1 = Byte read or byte write operation (6:0) Byte offset for byte read or byte write operation. For block read or block write operations, these bits should be '0000000' Table 3. Block Read and Block Write Protocol Block Write Protocol Block Read Protocol Bit Description Bit Description 1 Start 1 Start 2:8 Slave address – 7 bits 2:8 Slave address – 7 bits 9 Write = 0 9 Write = 0 10 Acknowledge from slave 10 Acknowledge from slave 11:18 Command Code – 8 bits '00000000' stands for block operation 11:18 Command Code – 8 bits '00000000' stands for block operation 19 Acknowledge from slave 19 Acknowledge from slave 20:27 Byte Count – 8 bits 20 Repeat start 28 Acknowledge from slave 21:27 Slave address – 7 bits 29:36 Data byte 1 – 8 bits 28 Read = 1 37 Acknowledge from slave 29 Acknowledge from slave 38:45 Data byte 2 – 8 bits 30:37 Byte count from slave – 8 bits 46 Acknowledge from slave 38 Acknowledge from master .... ...................... 39:46 Data byte from slave – 8 bits .... Data Byte (N–1) –8 bits 47 Acknowledge from master .... Acknowledge from slave 48:55 Data byte from slave – 8 bits .... Data Byte N –8 bits 56 Acknowledge from master .... Acknowledge from slave .... Data byte N from slave – 8 bits .... Stop .... Acknowledge from master .... Stop Table 4. Byte Read and Byte Write Protocol Byte Write Protocol Byte Read Protocol Bit Description Bit Description 1 Start 1 Start 2:8 Slave address – 7 bits 2:8 Slave address – 7 bits 9Write = 0 9 Write = 0 10 Acknowledge from slave 10 Acknowledge from slave 11:18 Command Code – 8 bits '100xxxxx' stands for byte operation, bits[4:0] of the command code represents the offset of the byte to be accessed 11:18 Command Code – 8 bits '100xxxxx' stands for byte operation, bits[4:0] of the command code represents the offset of the byte to be accessed 19 Acknowledge from slave 19 Acknowledge from slave 20:27 Data byte from master – 8 bits 20 Repeat start 28 Acknowledge from slave 21:27 Slave address – 7 bits |
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